美國國家海洋暨大氣總署-太空氣象預測中心: 警報、觀測與警告
美國國家海洋及大氣管理局太空天氣預報中心(NOAA SWPC) 是美國的官方太空天氣政府機構，提供有關太空天氣干擾的警報、監視和警告。以下是由NOAA SWPC發布的最新太空天氣警報、監視和警告。
星期日, 8 9月 2024
07:53 UTC
Space Weather Message Code: WATA30
Serial Number: 242
Issue Time: 2024 Sep 08 0753 UTC
WATCH: Geomagnetic Storm Category G2 Predicted
Highest Storm Level Predicted by Day:
Sep 09: None (Below G1) Sep 10: G2 (Moderate) Sep 11: G1 (Minor)
THIS SUPERSEDES ANY/ALL PRIOR WATCHES IN EFFECT
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 55 degrees Geomagnetic Latitude.
Induced Currents - Power grid fluctuations can occur. High-latitude power systems may experience voltage alarms.
Spacecraft - Satellite orientation irregularities may occur; increased drag on low Earth-orbit satellites is possible.
Radio - HF (high frequency) radio propagation can fade at higher latitudes.
Aurora - Aurora may be seen as low as New York to Wisconsin to Washington state.
01:29 UTC
Space Weather Message Code: ALTTP2
Serial Number: 1354
Issue Time: 2024 Sep 08 0129 UTC
ALERT: Type II Radio Emission
Begin Time: 2024 Sep 08 0057 UTC
Estimated Velocity: 924 km/s
Description: Type II emissions occur in association with eruptions on the sun and typically indicate a coronal mass ejection is associated with a flare event.
星期三, 4 9月 2024
17:55 UTC
Space Weather Message Code: WARK04
Serial Number: 4684
Issue Time: 2024 Sep 04 1755 UTC
EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 4683
Valid From: 2024 Sep 04 1055 UTC
Now Valid Until: 2024 Sep 04 2359 UTC
Warning Condition: Persistence
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.
15:18 UTC
Space Weather Message Code: ALTEF3
Serial Number: 3398
Issue Time: 2024 Sep 04 1518 UTC
ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Threshold Reached: 2024 Sep 04 1455 UTC
Station: GOES16
Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems.
11:00 UTC
Space Weather Message Code: SUMSUD
Serial Number: 277
Issue Time: 2024 Sep 04 1100 UTC
SUMMARY: Geomagnetic Sudden Impulse
Observed: 2024 Sep 04 1030 UTC
Deviation: 40 nT
Station: BOU
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
10:43 UTC
Space Weather Message Code: WARK05
Serial Number: 1921
Issue Time: 2024 Sep 04 1043 UTC
WARNING: Geomagnetic K-index of 5 expected
Valid From: 2024 Sep 04 1043 UTC
Valid To: 2024 Sep 04 1800 UTC
Warning Condition: Onset
NOAA Scale: G1 - Minor
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.
10:43 UTC
Space Weather Message Code: ALTK04
Serial Number: 2469
Issue Time: 2024 Sep 04 1043 UTC
ALERT: Geomagnetic K-index of 4
Threshold Reached: 2024 Sep 04 1039 UTC
Synoptic Period: 0900-1200 UTC
Active Warning: Yes
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.
10:39 UTC
Space Weather Message Code: WARK04
Serial Number: 4683
Issue Time: 2024 Sep 04 1039 UTC
WARNING: Geomagnetic K-index of 4 expected
Valid From: 2024 Sep 04 1055 UTC
Valid To: 2024 Sep 04 1800 UTC
Warning Condition: Onset
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.
10:17 UTC
Space Weather Message Code: WARSUD
Serial Number: 233
Issue Time: 2024 Sep 04 1017 UTC
WARNING: Geomagnetic Sudden Impulse expected
Valid From: 2024 Sep 04 1030 UTC
Valid To: 2024 Sep 04 1100 UTC
IP Shock Passage Observed: 2024 Sep 04 0940 UTC
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
03:04 UTC
Space Weather Message Code: SUM10R
Serial Number: 833
Issue Time: 2024 Sep 04 0304 UTC
SUMMARY: 10cm Radio Burst
Begin Time: 2024 Sep 04 0250 UTC
Maximum Time: 2024 Sep 04 0251 UTC
End Time: 2024 Sep 04 0251 UTC
Duration: 1 minutes
Peak Flux: 250 sfu
Latest Penticton Noon Flux: 242 sfu
Description: A 10cm radio burst indicates that the electromagnetic burst associated with a solar flare at the 10cm wavelength was double or greater than the initial 10cm radio background. This can be indicative of significant radio noise in association with a solar flare. This noise is generally short-lived but can cause interference for sensitive receivers including radar, GPS, and satellite communications.
星期二, 3 9月 2024
12:55 UTC
Space Weather Message Code: WARPX1
Serial Number: 573
Issue Time: 2024 Sep 03 1255 UTC
WARNING: Proton 10MeV Integral Flux above 10pfu expected
Valid From: 2024 Sep 03 1255 UTC
Valid To: 2024 Sep 04 1200 UTC
Warning Condition: Onset
Predicted NOAA Scale: S1 - Minor
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Radio - Minor impacts on polar HF (high frequency) radio propagation resulting in fades at lower frequencies.
08:42 UTC
Space Weather Message Code: ALTTP2
Serial Number: 1353
Issue Time: 2024 Sep 03 0842 UTC
ALERT: Type II Radio Emission
Begin Time: 2024 Sep 03 0753 UTC
Estimated Velocity: 547 km/s
Description: Type II emissions occur in association with eruptions on the sun and typically indicate a coronal mass ejection is associated with a flare event.
星期日, 1 9月 2024
17:55 UTC
Space Weather Message Code: WARK04
Serial Number: 4682
Issue Time: 2024 Sep 01 1755 UTC
EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 4681
Valid From: 2024 Aug 30 0849 UTC
Now Valid Until: 2024 Sep 02 0600 UTC
Warning Condition: Persistence
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.
14:41 UTC
Space Weather Message Code: SUMXM5
Serial Number: 258
Issue Time: 2024 Sep 01 1441 UTC
SUMMARY: X-ray Event exceeded M5
Begin Time: 2024 Sep 01 1141 UTC
Maximum Time: 2024 Sep 01 1322 UTC
End Time: 2024 Sep 01 1436 UTC
X-ray Class: M5.5
Location: S21E90
NOAA Scale: R2 - Moderate
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact centered primarily on sub-solar point on the sunlit side of Earth.
Radio - Limited blackout of HF (high frequency) radio communication for tens of minutes.
13:03 UTC
Space Weather Message Code: ALTXMF
Serial Number: 429
Issue Time: 2024 Sep 01 1303 UTC
ALERT: X-Ray Flux exceeded M5
Threshold Reached: 2024 Sep 01 1300 UTC
NOAA Scale: R2 - Moderate
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact centered on sub-solar point on the sunlit side of Earth. Extent of blackout of HF (high frequency) radio communication dependent upon current X-ray Flux intensity. For real-time information on affected area and expected duration please see http://www.swpc.noaa.gov/products/d-region-absorption-predictions-d-rap.
11:58 UTC
Space Weather Message Code: WARK04
Serial Number: 4681
Issue Time: 2024 Sep 01 1158 UTC
EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 4680
Valid From: 2024 Aug 30 0849 UTC
Now Valid Until: 2024 Sep 01 1800 UTC
Warning Condition: Persistence
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.
星期六, 31 8月 2024
23:21 UTC
Space Weather Message Code: WARK04
Serial Number: 4680
Issue Time: 2024 Aug 31 2321 UTC
EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 4679
Valid From: 2024 Aug 30 0849 UTC
Now Valid Until: 2024 Sep 01 1200 UTC
Warning Condition: Persistence
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.
20:55 UTC
Space Weather Message Code: WARK04
Serial Number: 4679
Issue Time: 2024 Aug 31 2055 UTC
EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 4678
Valid From: 2024 Aug 30 0849 UTC
Now Valid Until: 2024 Aug 31 2359 UTC
Warning Condition: Persistence
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.
17:16 UTC
Space Weather Message Code: ALTK05
Serial Number: 1633
Issue Time: 2024 Aug 31 1716 UTC
ALERT: Geomagnetic K-index of 5
Threshold Reached: 2024 Aug 31 1715 UTC
Synoptic Period: 1500-1800 UTC
Active Warning: Yes
NOAA Scale: G1 - Minor
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.
16:15 UTC
Space Weather Message Code: WARK05
Serial Number: 1920
Issue Time: 2024 Aug 31 1615 UTC
WARNING: Geomagnetic K-index of 5 expected
Valid From: 2024 Aug 31 1612 UTC
Valid To: 2024 Aug 31 2100 UTC
Warning Condition: Onset
NOAA Scale: G1 - Minor
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.
14:44 UTC
Space Weather Message Code: WARK04
Serial Number: 4678
Issue Time: 2024 Aug 31 1444 UTC
EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 4677
Valid From: 2024 Aug 30 0849 UTC
Now Valid Until: 2024 Aug 31 2100 UTC
Warning Condition: Onset
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.
09:14 UTC
Space Weather Message Code: ALTK05
Serial Number: 1632
Issue Time: 2024 Aug 31 0914 UTC
ALERT: Geomagnetic K-index of 5
Threshold Reached: 2024 Aug 31 0900 UTC
Synoptic Period: 0900-1200 UTC
Active Warning: Yes
NOAA Scale: G1 - Minor
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.
08:56 UTC
Space Weather Message Code: WARK04
Serial Number: 4677
Issue Time: 2024 Aug 31 0856 UTC
EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 4676
Valid From: 2024 Aug 30 0849 UTC
Now Valid Until: 2024 Aug 31 1500 UTC
Warning Condition: Persistence
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.
08:56 UTC
Space Weather Message Code: WARK05
Serial Number: 1919
Issue Time: 2024 Aug 31 0856 UTC
EXTENDED WARNING: Geomagnetic K-index of 5 expected
Extension to Serial Number: 1918
Valid From: 2024 Aug 30 2335 UTC
Now Valid Until: 2024 Aug 31 1500 UTC
Warning Condition: Persistence
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.
星期五, 30 8月 2024
23:59 UTC
Space Weather Message Code: ALTK05
Serial Number: 1631
Issue Time: 2024 Aug 30 2359 UTC
ALERT: Geomagnetic K-index of 5
Threshold Reached: 2024 Aug 30 2359 UTC
Synoptic Period: 2100-2400 UTC
Active Warning: Yes
NOAA Scale: G1 - Minor
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.
23:34 UTC
Space Weather Message Code: WARK05
Serial Number: 1918
Issue Time: 2024 Aug 30 2334 UTC
WARNING: Geomagnetic K-index of 5 expected
Valid From: 2024 Aug 30 2335 UTC
Valid To: 2024 Aug 31 0900 UTC
Warning Condition: Onset
NOAA Scale: G1 - Minor
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.
23:34 UTC
Space Weather Message Code: WARK04
Serial Number: 4676
Issue Time: 2024 Aug 30 2334 UTC
EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 4675
Valid From: 2024 Aug 30 0849 UTC
Now Valid Until: 2024 Aug 31 1200 UTC
Warning Condition: Persistence
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.
13:21 UTC
Space Weather Message Code: WARK04
Serial Number: 4675
Issue Time: 2024 Aug 30 1321 UTC
EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 4674
Valid From: 2024 Aug 30 0849 UTC
Now Valid Until: 2024 Aug 30 2359 UTC
Warning Condition: Persistence
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.
08:52 UTC
Space Weather Message Code: ALTK04
Serial Number: 2468
Issue Time: 2024 Aug 30 0852 UTC
ALERT: Geomagnetic K-index of 4
Threshold Reached: 2024 Aug 30 0852 UTC
Synoptic Period: 0600-0900 UTC
Active Warning: Yes
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.
08:49 UTC
Space Weather Message Code: WARK04
Serial Number: 4674
Issue Time: 2024 Aug 30 0849 UTC
WARNING: Geomagnetic K-index of 4 expected
Valid From: 2024 Aug 30 0849 UTC
Valid To: 2024 Aug 30 1500 UTC
Warning Condition: Onset
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.
星期三, 28 8月 2024
21:13 UTC
Space Weather Message Code: WATA20
Serial Number: 1011
Issue Time: 2024 Aug 28 2113 UTC
WATCH: Geomagnetic Storm Category G1 Predicted
Highest Storm Level Predicted by Day:
Aug 29: G1 (Minor) Aug 30: None (Below G1) Aug 31: None (Below G1)
THIS SUPERSEDES ANY/ALL PRIOR WATCHES IN EFFECT
Comment: Lingering CME effects are likely to cause geomagnetic storming during the early hours of 29 Aug.
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.
07:32 UTC
Space Weather Message Code: WARK05
Serial Number: 1917
Issue Time: 2024 Aug 28 0732 UTC
EXTENDED WARNING: Geomagnetic K-index of 5 expected
Extension to Serial Number: 1916
Valid From: 2024 Aug 28 0133 UTC
Now Valid Until: 2024 Aug 28 1800 UTC
Warning Condition: Persistence
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.
07:28 UTC
Space Weather Message Code: WARK04
Serial Number: 4673
Issue Time: 2024 Aug 28 0728 UTC
EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 4672
Valid From: 2024 Aug 27 2323 UTC
Now Valid Until: 2024 Aug 28 2359 UTC
Warning Condition: Persistence
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.
07:03 UTC
Space Weather Message Code: ALTK05
Serial Number: 1630
Issue Time: 2024 Aug 28 0703 UTC
ALERT: Geomagnetic K-index of 5
Threshold Reached: 2024 Aug 28 0659 UTC
Synoptic Period: 0600-0900 UTC
Active Warning: Yes
NOAA Scale: G1 - Minor
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.
03:01 UTC
Space Weather Message Code: ALTK06
Serial Number: 589
Issue Time: 2024 Aug 28 0301 UTC
ALERT: Geomagnetic K-index of 6
Threshold Reached: 2024 Aug 28 0259 UTC
Synoptic Period: 0000-0300 UTC
Active Warning: Yes
NOAA Scale: G2 - Moderate
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 55 degrees Geomagnetic Latitude.
Induced Currents - Power grid fluctuations can occur. High-latitude power systems may experience voltage alarms.
Spacecraft - Satellite orientation irregularities may occur; increased drag on low Earth-orbit satellites is possible.
Radio - HF (high frequency) radio propagation can fade at higher latitudes.
Aurora - Aurora may be seen as low as New York to Wisconsin to Washington state.
02:23 UTC
Space Weather Message Code: WARK06
Serial Number: 540
Issue Time: 2024 Aug 28 0223 UTC
WARNING: Geomagnetic K-Index of 6 expected
Valid From: 2024 Aug 28 0223 UTC
Valid To: 2024 Aug 28 0900 UTC
Warning Condition: Onset
NOAA Scale: G2 - Moderate
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 55 degrees Geomagnetic Latitude.
Induced Currents - Power grid fluctuations can occur. High-latitude power systems may experience voltage alarms.
Spacecraft - Satellite orientation irregularities may occur; increased drag on low Earth-orbit satellites is possible.
Radio - HF (high frequency) radio propagation can fade at higher latitudes.
Aurora - Aurora may be seen as low as New York to Wisconsin to Washington state.
02:12 UTC
Space Weather Message Code: ALTK05
Serial Number: 1629
Issue Time: 2024 Aug 28 0212 UTC
ALERT: Geomagnetic K-index of 5
Threshold Reached: 2024 Aug 28 0212 UTC
Synoptic Period: 0000-0300 UTC
Active Warning: Yes
NOAA Scale: G1 - Minor
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.
01:33 UTC
Space Weather Message Code: WARK05
Serial Number: 1916
Issue Time: 2024 Aug 28 0133 UTC
WARNING: Geomagnetic K-index of 5 expected
Valid From: 2024 Aug 28 0133 UTC
Valid To: 2024 Aug 28 0900 UTC
Warning Condition: Onset
NOAA Scale: G1 - Minor
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.
00:04 UTC
Space Weather Message Code: ALTK04
Serial Number: 2467
Issue Time: 2024 Aug 28 0004 UTC
ALERT: Geomagnetic K-index of 4
Threshold Reached: 2024 Aug 27 2359 UTC
Synoptic Period: 2100-2400 UTC
Active Warning: Yes
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.
星期二, 27 8月 2024
23:23 UTC
Space Weather Message Code: WARK04
Serial Number: 4672
Issue Time: 2024 Aug 27 2323 UTC
WARNING: Geomagnetic K-index of 4 expected
Valid From: 2024 Aug 27 2323 UTC
Valid To: 2024 Aug 28 0900 UTC
Warning Condition: Onset
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.
星期日, 25 8月 2024
00:19 UTC
Space Weather Message Code: ALTTP2
Serial Number: 1352
Issue Time: 2024 Aug 25 0019 UTC
ALERT: Type II Radio Emission
Begin Time: 2024 Aug 25 0000 UTC
Estimated Velocity: 360 km/s
Description: Type II emissions occur in association with eruptions on the sun and typically indicate a coronal mass ejection is associated with a flare event.
星期五, 23 8月 2024
20:27 UTC
Space Weather Message Code: SUMXM5
Serial Number: 257
Issue Time: 2024 Aug 23 2027 UTC
SUMMARY: X-ray Event exceeded M5
Begin Time: 2024 Aug 23 2008 UTC
Maximum Time: 2024 Aug 23 2012 UTC
End Time: 2024 Aug 23 2018 UTC
X-ray Class: M5.1
Location: S27E22
NOAA Scale: R2 - Moderate
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact centered primarily on sub-solar point on the sunlit side of Earth.
Radio - Limited blackout of HF (high frequency) radio communication for tens of minutes.
20:20 UTC
Space Weather Message Code: ALTXMF
Serial Number: 428
Issue Time: 2024 Aug 23 2020 UTC
ALERT: X-Ray Flux exceeded M5
Threshold Reached: 2024 Aug 23 2012 UTC
NOAA Scale: R2 - Moderate
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact centered on sub-solar point on the sunlit side of Earth. Extent of blackout of HF (high frequency) radio communication dependent upon current X-ray Flux intensity. For real-time information on affected area and expected duration please see http://www.swpc.noaa.gov/products/d-region-absorption-predictions-d-rap.
06:19 UTC
Space Weather Message Code: WARK04
Serial Number: 4671
Issue Time: 2024 Aug 23 0619 UTC
WARNING: Geomagnetic K-index of 4 expected
Valid From: 2024 Aug 23 0619 UTC
Valid To: 2024 Aug 23 1200 UTC
Warning Condition: Onset
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.
03:54 UTC
Space Weather Message Code: ALTTP2
Serial Number: 1351
Issue Time: 2024 Aug 23 0354 UTC
ALERT: Type II Radio Emission
Begin Time: 2024 Aug 23 0343 UTC
Estimated Velocity: 347 km/s
Description: Type II emissions occur in association with eruptions on the sun and typically indicate a coronal mass ejection is associated with a flare event.
02:20 UTC
Space Weather Message Code: ALTTP2
Serial Number: 1350
Issue Time: 2024 Aug 23 0220 UTC
ALERT: Type II Radio Emission
Begin Time: 2024 Aug 23 0119 UTC
Estimated Velocity: 236 km/s
Description: Type II emissions occur in association with eruptions on the sun and typically indicate a coronal mass ejection is associated with a flare event.
星期四, 22 8月 2024
02:46 UTC
Space Weather Message Code: WARK04
Serial Number: 4670
Issue Time: 2024 Aug 22 0246 UTC
WARNING: Geomagnetic K-index of 4 expected
Valid From: 2024 Aug 22 0246 UTC
Valid To: 2024 Aug 22 0900 UTC
Warning Condition: Onset
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.
星期三, 21 8月 2024
22:30 UTC
Space Weather Message Code: SUMXM5
Serial Number: 256
Issue Time: 2024 Aug 21 2230 UTC
SUMMARY: X-ray Event exceeded M5
Begin Time: 2024 Aug 21 2159 UTC
Maximum Time: 2024 Aug 21 2208 UTC
End Time: 2024 Aug 21 2217 UTC
X-ray Class: M5.1
Location: S03E31
NOAA Scale: R2 - Moderate
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact centered primarily on sub-solar point on the sunlit side of Earth.
Radio - Limited blackout of HF (high frequency) radio communication for tens of minutes.
22:11 UTC
Space Weather Message Code: ALTXMF
Serial Number: 427
Issue Time: 2024 Aug 21 2211 UTC
ALERT: X-Ray Flux exceeded M5
Threshold Reached: 2024 Aug 21 2207 UTC
NOAA Scale: R2 - Moderate
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact centered on sub-solar point on the sunlit side of Earth. Extent of blackout of HF (high frequency) radio communication dependent upon current X-ray Flux intensity. For real-time information on affected area and expected duration please see http://www.swpc.noaa.gov/products/d-region-absorption-predictions-d-rap.
05:59 UTC
Space Weather Message Code: WARK04
Serial Number: 4669
Issue Time: 2024 Aug 21 0559 UTC
EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 4668
Valid From: 2024 Aug 21 0147 UTC
Now Valid Until: 2024 Aug 21 0900 UTC
Warning Condition: Onset
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.
01:47 UTC
Space Weather Message Code: WARK04
Serial Number: 4668
Issue Time: 2024 Aug 21 0147 UTC
WARNING: Geomagnetic K-index of 4 expected
Valid From: 2024 Aug 21 0147 UTC
Valid To: 2024 Aug 21 0600 UTC
Warning Condition: Onset
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.
星期日, 18 8月 2024
17:55 UTC
Space Weather Message Code: WARK04
Serial Number: 4667
Issue Time: 2024 Aug 18 1755 UTC
EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 4666
Valid From: 2024 Aug 17 1354 UTC
Now Valid Until: 2024 Aug 18 2359 UTC
Warning Condition: Persistence
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.
13:46 UTC
Space Weather Message Code: WATA20
Serial Number: 1010
Issue Time: 2024 Aug 18 1346 UTC
CANCEL WATCH: Geomagnetic Storm Category G1 Predicted
Cancel Serial Number: 1009
Original Issue Time: 2024 Aug 15 1358 UTC
Comment: Current conditions no longer warrent this Watch.
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.
星期六, 17 8月 2024
23:55 UTC
Space Weather Message Code: WARK04
Serial Number: 4666
Issue Time: 2024 Aug 17 2355 UTC
EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 4665
Valid From: 2024 Aug 17 1354 UTC
Now Valid Until: 2024 Aug 18 1800 UTC
Warning Condition: Onset
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.
23:55 UTC
Space Weather Message Code: WARK05
Serial Number: 1915
Issue Time: 2024 Aug 17 2355 UTC
EXTENDED WARNING: Geomagnetic K-index of 5 expected
Extension to Serial Number: 1914
Valid From: 2024 Aug 17 1600 UTC
Now Valid Until: 2024 Aug 18 1200 UTC
Warning Condition: Persistence
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.
21:54 UTC
Space Weather Message Code: ALTK05
Serial Number: 1628
Issue Time: 2024 Aug 17 2154 UTC
ALERT: Geomagnetic K-index of 5
Threshold Reached: 2024 Aug 17 2147 UTC
Synoptic Period: 2100-2400 UTC
Active Warning: Yes
NOAA Scale: G1 - Minor
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.
21:01 UTC
Space Weather Message Code: ALTK05
Serial Number: 1627
Issue Time: 2024 Aug 17 2101 UTC
ALERT: Geomagnetic K-index of 5
Threshold Reached: 2024 Aug 17 2059 UTC
Synoptic Period: 1800-2100 UTC
Active Warning: Yes
NOAA Scale: G1 - Minor
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.
17:46 UTC
Space Weather Message Code: ALTK07
Serial Number: 163
Issue Time: 2024 Aug 17 1746 UTC
ALERT: Geomagnetic K-index of 7
Threshold Reached: 2024 Aug 17 1746 UTC
Synoptic Period: 1500-1800 UTC
Active Warning: Yes
NOAA Scale: G3 - Strong
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 50 degrees Geomagnetic Latitude.
Induced Currents - Power system voltage irregularities possible, false alarms may be triggered on some protection devices.
Spacecraft - Systems may experience surface charging; increased drag on low Earth-orbit satellites and orientation problems may occur.
Navigation - Intermittent satellite navigation (GPS) problems, including loss-of-lock and increased range error may occur.
Radio - HF (high frequency) radio may be intermittent.
Aurora - Aurora may be seen as low as Pennsylvania to Iowa to Oregon.
17:45 UTC
Space Weather Message Code: WARK07
Serial Number: 114
Issue Time: 2024 Aug 17 1745 UTC
WARNING: Geomagnetic K-index of 7 or greater expected
Valid From: 2024 Aug 17 1744 UTC
Valid To: 2024 Aug 17 2100 UTC
Warning Condition: Onset
NOAA Scale: G3 or greater
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 50 degrees Geomagnetic Latitude.
Induced Currents - Power system voltage irregularities possible, false alarms may be triggered on some protection devices.
Spacecraft - Systems may experience surface charging; increased drag on low Earth-orbit satellites and orientation problems may occur.
Navigation - Intermittent satellite navigation (GPS) problems, including loss-of-lock and increased range error may occur.
Radio - HF (high frequency) radio may be intermittent.
Aurora - Aurora may be seen as low as Pennsylvania to Iowa to Oregon.
17:12 UTC
Space Weather Message Code: ALTK06
Serial Number: 588
Issue Time: 2024 Aug 17 1712 UTC
ALERT: Geomagnetic K-index of 6
Threshold Reached: 2024 Aug 17 1712 UTC
Synoptic Period: 1500-1800 UTC
Active Warning: Yes
NOAA Scale: G2 - Moderate
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 55 degrees Geomagnetic Latitude.
Induced Currents - Power grid fluctuations can occur. High-latitude power systems may experience voltage alarms.
Spacecraft - Satellite orientation irregularities may occur; increased drag on low Earth-orbit satellites is possible.
Radio - HF (high frequency) radio propagation can fade at higher latitudes.
Aurora - Aurora may be seen as low as New York to Wisconsin to Washington state.
16:44 UTC
Space Weather Message Code: WARK06
Serial Number: 539
Issue Time: 2024 Aug 17 1644 UTC
WARNING: Geomagnetic K-Index of 6 expected
Valid From: 2024 Aug 17 1644 UTC
Valid To: 2024 Aug 17 2359 UTC
Warning Condition: Onset
NOAA Scale: G2 - Moderate
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 55 degrees Geomagnetic Latitude.
Induced Currents - Power grid fluctuations can occur. High-latitude power systems may experience voltage alarms.
Spacecraft - Satellite orientation irregularities may occur; increased drag on low Earth-orbit satellites is possible.
Radio - HF (high frequency) radio propagation can fade at higher latitudes.
Aurora - Aurora may be seen as low as New York to Wisconsin to Washington state.
16:17 UTC
Space Weather Message Code: ALTK05
Serial Number: 1626
Issue Time: 2024 Aug 17 1617 UTC
ALERT: Geomagnetic K-index of 5
Threshold Reached: 2024 Aug 17 1616 UTC
Synoptic Period: 1500-1800 UTC
Active Warning: Yes
NOAA Scale: G1 - Minor
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.
16:01 UTC
Space Weather Message Code: WARK05
Serial Number: 1914
Issue Time: 2024 Aug 17 1601 UTC
WARNING: Geomagnetic K-index of 5 expected
Valid From: 2024 Aug 17 1600 UTC
Valid To: 2024 Aug 17 2359 UTC
Warning Condition: Onset
NOAA Scale: G1 - Minor
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.
15:58 UTC
Space Weather Message Code: ALTK04
Serial Number: 2466
Issue Time: 2024 Aug 17 1558 UTC
ALERT: Geomagnetic K-index of 4
Threshold Reached: 2024 Aug 17 1555 UTC
Synoptic Period: 1500-1800 UTC
Active Warning: Yes
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.
13:55 UTC
Space Weather Message Code: WARK04
Serial Number: 4665
Issue Time: 2024 Aug 17 1355 UTC
WARNING: Geomagnetic K-index of 4 expected
Valid From: 2024 Aug 17 1354 UTC
Valid To: 2024 Aug 17 2359 UTC
Warning Condition: Onset
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.
星期四, 15 8月 2024
13:58 UTC
Space Weather Message Code: WATA20
Serial Number: 1009
Issue Time: 2024 Aug 15 1358 UTC
WATCH: Geomagnetic Storm Category G1 Predicted
Highest Storm Level Predicted by Day:
Aug 16: None (Below G1) Aug 17: None (Below G1) Aug 18: G1 (Minor)
THIS SUPERSEDES ANY/ALL PRIOR WATCHES IN EFFECT
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.
星期三, 14 8月 2024
23:12 UTC
Space Weather Message Code: WARK04
Serial Number: 4664
Issue Time: 2024 Aug 14 2312 UTC
WARNING: Geomagnetic K-index of 4 expected
Valid From: 2024 Aug 14 2312 UTC
Valid To: 2024 Aug 15 0900 UTC
Warning Condition: Onset
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.
16:07 UTC
Space Weather Message Code: SUMXM5
Serial Number: 255
Issue Time: 2024 Aug 14 1607 UTC
SUMMARY: X-ray Event exceeded M5
Begin Time: 2024 Aug 14 1539 UTC
Maximum Time: 2024 Aug 14 1549 UTC
End Time: 2024 Aug 14 1557 UTC
X-ray Class: M5.3
Location: S09E76
NOAA Scale: R2 - Moderate
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact centered primarily on sub-solar point on the sunlit side of Earth.
Radio - Limited blackout of HF (high frequency) radio communication for tens of minutes.
15:50 UTC
Space Weather Message Code: ALTXMF
Serial Number: 426
Issue Time: 2024 Aug 14 1550 UTC
ALERT: X-Ray Flux exceeded M5
Threshold Reached: 2024 Aug 14 1548 UTC
NOAA Scale: R2 - Moderate
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact centered on sub-solar point on the sunlit side of Earth. Extent of blackout of HF (high frequency) radio communication dependent upon current X-ray Flux intensity. For real-time information on affected area and expected duration please see http://www.swpc.noaa.gov/products/d-region-absorption-predictions-d-rap.
07:30 UTC
Space Weather Message Code: ALTTP2
Serial Number: 1349
Issue Time: 2024 Aug 14 0730 UTC
ALERT: Type II Radio Emission
Begin Time: 2024 Aug 14 0649 UTC
Estimated Velocity: 516 km/s
Description: Type II emissions occur in association with eruptions on the sun and typically indicate a coronal mass ejection is associated with a flare event.
07:16 UTC
Space Weather Message Code: SUMX01
Serial Number: 170
Issue Time: 2024 Aug 14 0716 UTC
SUMMARY: X-ray Event exceeded X1
Begin Time: 2024 Aug 14 0600 UTC
Maximum Time: 2024 Aug 14 0640 UTC
End Time: 2024 Aug 14 0708 UTC
X-ray Class: X1.0
Optical Class: 2b
Location: N15E01
NOAA Scale: R3 - Strong
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact consists of large portions of the sunlit side of Earth, strongest at the sub-solar point.
Radio - Wide area blackout of HF (high frequency) radio communication for about an hour.
07:13 UTC
Space Weather Message Code: ALTTP2
Serial Number: 1348
Issue Time: 2024 Aug 14 0713 UTC
ALERT: Type II Radio Emission
Begin Time: 2024 Aug 14 0649 UTC
Estimated Velocity: 223 km/s
Description: Type II emissions occur in association with eruptions on the sun and typically indicate a coronal mass ejection is associated with a flare event.
07:09 UTC
Space Weather Message Code: SUM10R
Serial Number: 832
Issue Time: 2024 Aug 14 0709 UTC
SUMMARY: 10cm Radio Burst
Begin Time: 2024 Aug 14 0641 UTC
Maximum Time: 2024 Aug 14 0650 UTC
End Time: 2024 Aug 14 0655 UTC
Duration: 14 minutes
Peak Flux: 500 sfu
Latest Penticton Noon Flux: 260 sfu
Description: A 10cm radio burst indicates that the electromagnetic burst associated with a solar flare at the 10cm wavelength was double or greater than the initial 10cm radio background. This can be indicative of significant radio noise in association with a solar flare. This noise is generally short-lived but can cause interference for sensitive receivers including radar, GPS, and satellite communications.
07:04 UTC
Space Weather Message Code: ALTTP4
Serial Number: 662
Issue Time: 2024 Aug 14 0704 UTC
ALERT: Type IV Radio Emission
Begin Time: 2024 Aug 14 0639 UTC
Description: Type IV emissions occur in association with major eruptions on the sun and are typically associated with strong coronal mass ejections and solar radiation storms.
06:30 UTC
Space Weather Message Code: ALTXMF
Serial Number: 425
Issue Time: 2024 Aug 14 0630 UTC
ALERT: X-Ray Flux exceeded M5
Threshold Reached: 2024 Aug 14 0626 UTC
NOAA Scale: R2 - Moderate
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact centered on sub-solar point on the sunlit side of Earth. Extent of blackout of HF (high frequency) radio communication dependent upon current X-ray Flux intensity. For real-time information on affected area and expected duration please see http://www.swpc.noaa.gov/products/d-region-absorption-predictions-d-rap.
星期二, 13 8月 2024
23:30 UTC
Space Weather Message Code: WARK05
Serial Number: 1913
Issue Time: 2024 Aug 13 2330 UTC
WARNING: Geomagnetic K-index of 5 expected
Valid From: 2024 Aug 13 2330 UTC
Valid To: 2024 Aug 14 0600 UTC
Warning Condition: Onset
NOAA Scale: G1 - Minor
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.
22:26 UTC
Space Weather Message Code: ALTK04
Serial Number: 2465
Issue Time: 2024 Aug 13 2226 UTC
ALERT: Geomagnetic K-index of 4
Threshold Reached: 2024 Aug 13 2226 UTC
Synoptic Period: 2100-2400 UTC
Active Warning: Yes
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.
22:12 UTC
Space Weather Message Code: WARK04
Serial Number: 4663
Issue Time: 2024 Aug 13 2212 UTC
WARNING: Geomagnetic K-index of 4 expected
Valid From: 2024 Aug 13 2211 UTC
Valid To: 2024 Aug 14 0900 UTC
Warning Condition: Onset
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.
05:42 UTC
Space Weather Message Code: WARK05
Serial Number: 1912
Issue Time: 2024 Aug 13 0542 UTC
EXTENDED WARNING: Geomagnetic K-index of 5 expected
Extension to Serial Number: 1911
Valid From: 2024 Aug 11 0745 UTC
Now Valid Until: 2024 Aug 13 1200 UTC
Warning Condition: Persistence
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.
05:42 UTC
Space Weather Message Code: WARK06
Serial Number: 538
Issue Time: 2024 Aug 13 0542 UTC
EXTENDED WARNING: Geomagnetic K-Index of 6 expected
Extension to Serial Number: 537
Valid From: 2024 Aug 12 0055 UTC
Now Valid Until: 2024 Aug 13 1200 UTC
Warning Condition: Persistence
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 55 degrees Geomagnetic Latitude.
Induced Currents - Power grid fluctuations can occur. High-latitude power systems may experience voltage alarms.
Spacecraft - Satellite orientation irregularities may occur; increased drag on low Earth-orbit satellites is possible.
Radio - HF (high frequency) radio propagation can fade at higher latitudes.
Aurora - Aurora may be seen as low as New York to Wisconsin to Washington state.
02:26 UTC
Space Weather Message Code: ALTK05
Serial Number: 1625
Issue Time: 2024 Aug 13 0226 UTC
ALERT: Geomagnetic K-index of 5
Threshold Reached: 2024 Aug 13 0225 UTC
Synoptic Period: 0000-0300 UTC
Active Warning: Yes
NOAA Scale: G1 - Minor
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.
星期一, 12 8月 2024
23:49 UTC
Space Weather Message Code: WARK05
Serial Number: 1911
Issue Time: 2024 Aug 12 2349 UTC
EXTENDED WARNING: Geomagnetic K-index of 5 expected
Extension to Serial Number: 1909
Valid From: 2024 Aug 11 0745 UTC
Now Valid Until: 2024 Aug 13 0900 UTC
Warning Condition: Persistence
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.
23:49 UTC
Space Weather Message Code: WARK06
Serial Number: 537
Issue Time: 2024 Aug 12 2349 UTC
EXTENDED WARNING: Geomagnetic K-Index of 6 expected
Extension to Serial Number: 536
Valid From: 2024 Aug 12 0055 UTC
Now Valid Until: 2024 Aug 13 0600 UTC
Warning Condition: Persistence
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 55 degrees Geomagnetic Latitude.
Induced Currents - Power grid fluctuations can occur. High-latitude power systems may experience voltage alarms.
Spacecraft - Satellite orientation irregularities may occur; increased drag on low Earth-orbit satellites is possible.
Radio - HF (high frequency) radio propagation can fade at higher latitudes.
Aurora - Aurora may be seen as low as New York to Wisconsin to Washington state.
23:02 UTC
Space Weather Message Code: ALTK06
Serial Number: 587
Issue Time: 2024 Aug 12 2302 UTC
ALERT: Geomagnetic K-index of 6
Threshold Reached: 2024 Aug 12 2301 UTC
Synoptic Period: 2100-2400 UTC
Active Warning: Yes
NOAA Scale: G2 - Moderate
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 55 degrees Geomagnetic Latitude.
Induced Currents - Power grid fluctuations can occur. High-latitude power systems may experience voltage alarms.
Spacecraft - Satellite orientation irregularities may occur; increased drag on low Earth-orbit satellites is possible.
Radio - HF (high frequency) radio propagation can fade at higher latitudes.
Aurora - Aurora may be seen as low as New York to Wisconsin to Washington state.
22:36 UTC
Space Weather Message Code: ALTK05
Serial Number: 1624
Issue Time: 2024 Aug 12 2236 UTC
ALERT: Geomagnetic K-index of 5
Threshold Reached: 2024 Aug 12 2235 UTC
Synoptic Period: 2100-2400 UTC
Active Warning: Yes
NOAA Scale: G1 - Minor
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.
19:45 UTC
Space Weather Message Code: ALTK06
Serial Number: 586
Issue Time: 2024 Aug 12 1945 UTC
ALERT: Geomagnetic K-index of 6
Threshold Reached: 2024 Aug 12 1941 UTC
Synoptic Period: 1800-2100 UTC
Active Warning: Yes
NOAA Scale: G2 - Moderate
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 55 degrees Geomagnetic Latitude.
Induced Currents - Power grid fluctuations can occur. High-latitude power systems may experience voltage alarms.
Spacecraft - Satellite orientation irregularities may occur; increased drag on low Earth-orbit satellites is possible.
Radio - HF (high frequency) radio propagation can fade at higher latitudes.
Aurora - Aurora may be seen as low as New York to Wisconsin to Washington state.
18:30 UTC
Space Weather Message Code: ALTK05
Serial Number: 1623
Issue Time: 2024 Aug 12 1830 UTC
ALERT: Geomagnetic K-index of 5
Threshold Reached: 2024 Aug 12 1826 UTC
Synoptic Period: 1800-2100 UTC
Active Warning: Yes
NOAA Scale: G1 - Minor
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.
18:27 UTC
Space Weather Message Code: WARK04
Serial Number: 4662
Issue Time: 2024 Aug 12 1827 UTC
EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 4661
Valid From: 2024 Aug 11 0720 UTC
Now Valid Until: 2024 Aug 13 2100 UTC
Warning Condition: persistence
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.
17:34 UTC
Space Weather Message Code: WARK07
Serial Number: 113
Issue Time: 2024 Aug 12 1734 UTC
EXTENDED WARNING: Geomagnetic K-index of 7 or greater expected
Extension to Serial Number: 112
Valid From: 2024 Aug 12 0505 UTC
Now Valid Until: 2024 Aug 13 0000 UTC
Warning Condition: Persistence
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 50 degrees Geomagnetic Latitude.
Induced Currents - Power system voltage irregularities possible, false alarms may be triggered on some protection devices.
Spacecraft - Systems may experience surface charging; increased drag on low Earth-orbit satellites and orientation problems may occur.
Navigation - Intermittent satellite navigation (GPS) problems, including loss-of-lock and increased range error may occur.
Radio - HF (high frequency) radio may be intermittent.
Aurora - Aurora may be seen as low as Pennsylvania to Iowa to Oregon.
17:33 UTC
Space Weather Message Code: WARK06
Serial Number: 536
Issue Time: 2024 Aug 12 1733 UTC
EXTENDED WARNING: Geomagnetic K-Index of 6 expected
Extension to Serial Number: 535
Valid From: 2024 Aug 12 0055 UTC
Now Valid Until: 2024 Aug 13 0000 UTC
Warning Condition: Persistence
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 55 degrees Geomagnetic Latitude.
Induced Currents - Power grid fluctuations can occur. High-latitude power systems may experience voltage alarms.
Spacecraft - Satellite orientation irregularities may occur; increased drag on low Earth-orbit satellites is possible.
Radio - HF (high frequency) radio propagation can fade at higher latitudes.
Aurora - Aurora may be seen as low as New York to Wisconsin to Washington state.
17:33 UTC
Space Weather Message Code: WARK05
Serial Number: 1909
Issue Time: 2024 Aug 12 1733 UTC
EXTENDED WARNING: Geomagnetic K-index of 5 expected
Extension to Serial Number: 1908
Valid From: 2024 Aug 11 0745 UTC
Now Valid Until: 2024 Aug 13 0300 UTC
Warning Condition: Persistence
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.
16:44 UTC
Space Weather Message Code: ALTK07
Serial Number: 162
Issue Time: 2024 Aug 12 1644 UTC
ALERT: Geomagnetic K-index of 7
Threshold Reached: 2024 Aug 12 1638 UTC
Synoptic Period: 1500-1800 UTC
Active Warning: Yes
NOAA Scale: G3 - Strong
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 50 degrees Geomagnetic Latitude.
Induced Currents - Power system voltage irregularities possible, false alarms may be triggered on some protection devices.
Spacecraft - Systems may experience surface charging; increased drag on low Earth-orbit satellites and orientation problems may occur.
Navigation - Intermittent satellite navigation (GPS) problems, including loss-of-lock and increased range error may occur.
Radio - HF (high frequency) radio may be intermittent.
Aurora - Aurora may be seen as low as Pennsylvania to Iowa to Oregon.
16:09 UTC
Space Weather Message Code: WATA30
Serial Number: 241
Issue Time: 2024 Aug 12 1609 UTC
WATCH: Geomagnetic Storm Category G2 Predicted
Highest Storm Level Predicted by Day:
Aug 13: G2 (Moderate) Aug 14: None (Below G1) Aug 15: None (Below G1)
THIS SUPERSEDES ANY/ALL PRIOR WATCHES IN EFFECT
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 55 degrees Geomagnetic Latitude.
Induced Currents - Power grid fluctuations can occur. High-latitude power systems may experience voltage alarms.
Spacecraft - Satellite orientation irregularities may occur; increased drag on low Earth-orbit satellites is possible.
Radio - HF (high frequency) radio propagation can fade at higher latitudes.
Aurora - Aurora may be seen as low as New York to Wisconsin to Washington state.
15:36 UTC
Space Weather Message Code: ALTK06
Serial Number: 585
Issue Time: 2024 Aug 12 1536 UTC
ALERT: Geomagnetic K-index of 6
Threshold Reached: 2024 Aug 12 1527 UTC
Synoptic Period: 1500-1800 UTC
Active Warning: Yes
NOAA Scale: G2 - Moderate
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 55 degrees Geomagnetic Latitude.
Induced Currents - Power grid fluctuations can occur. High-latitude power systems may experience voltage alarms.
Spacecraft - Satellite orientation irregularities may occur; increased drag on low Earth-orbit satellites is possible.
Radio - HF (high frequency) radio propagation can fade at higher latitudes.
Aurora - Aurora may be seen as low as New York to Wisconsin to Washington state.
14:48 UTC
Space Weather Message Code: ALTK08
Serial Number: 41
Issue Time: 2024 Aug 12 1448 UTC
ALERT: Geomagnetic K-index of 8, 9-
Threshold Reached: 2024 Aug 12 1442 UTC
Synoptic Period: 1200-1500 UTC
Active Warning: Yes
NOAA Scale: G4 - Severe
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 45 degrees Geomagnetic Latitude.
Induced Currents - Possible widespread voltage control problems and some protective systems may mistakenly trip out key assets from the power grid. Induced pipeline currents intensify.
Spacecraft - Systems may experience surface charging; increased drag on low earth orbit satellites, and tracking and orientation problems may occur.
Navigation - Satellite navigation (GPS) degraded or inoperable for hours.
Radio - HF (high frequency) radio propagation sporadic or blacked out.
Aurora - Aurora may be seen as low as Alabama and northern California.
14:19 UTC
Space Weather Message Code: WARK07
Serial Number: 112
Issue Time: 2024 Aug 12 1419 UTC
EXTENDED WARNING: Geomagnetic K-index of 7 or greater expected
Extension to Serial Number: 111
Valid From: 2024 Aug 12 0505 UTC
Now Valid Until: 2024 Aug 12 1800 UTC
Warning Condition: Persistence
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 50 degrees Geomagnetic Latitude.
Induced Currents - Power system voltage irregularities possible, false alarms may be triggered on some protection devices.
Spacecraft - Systems may experience surface charging; increased drag on low Earth-orbit satellites and orientation problems may occur.
Navigation - Intermittent satellite navigation (GPS) problems, including loss-of-lock and increased range error may occur.
Radio - HF (high frequency) radio may be intermittent.
Aurora - Aurora may be seen as low as Pennsylvania to Iowa to Oregon.
14:18 UTC
Space Weather Message Code: WARK06
Serial Number: 535
Issue Time: 2024 Aug 12 1418 UTC
EXTENDED WARNING: Geomagnetic K-Index of 6 expected
Extension to Serial Number: 534
Valid From: 2024 Aug 12 0055 UTC
Now Valid Until: 2024 Aug 12 2100 UTC
Warning Condition: Persistence
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 55 degrees Geomagnetic Latitude.
Induced Currents - Power grid fluctuations can occur. High-latitude power systems may experience voltage alarms.
Spacecraft - Satellite orientation irregularities may occur; increased drag on low Earth-orbit satellites is possible.
Radio - HF (high frequency) radio propagation can fade at higher latitudes.
Aurora - Aurora may be seen as low as New York to Wisconsin to Washington state.
14:17 UTC
Space Weather Message Code: WARK05
Serial Number: 1908
Issue Time: 2024 Aug 12 1417 UTC
EXTENDED WARNING: Geomagnetic K-index of 5 expected
Extension to Serial Number: 1907
Valid From: 2024 Aug 11 0745 UTC
Now Valid Until: 2024 Aug 13 0000 UTC
Warning Condition: Persistence
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.
14:16 UTC
Space Weather Message Code: ALTK07
Serial Number: 161
Issue Time: 2024 Aug 12 1416 UTC
ALERT: Geomagnetic K-index of 7
Threshold Reached: 2024 Aug 12 1412 UTC
Synoptic Period: 1200-1500 UTC
Active Warning: Yes
NOAA Scale: G3 - Strong
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 50 degrees Geomagnetic Latitude.
Induced Currents - Power system voltage irregularities possible, false alarms may be triggered on some protection devices.
Spacecraft - Systems may experience surface charging; increased drag on low Earth-orbit satellites and orientation problems may occur.
Navigation - Intermittent satellite navigation (GPS) problems, including loss-of-lock and increased range error may occur.
Radio - HF (high frequency) radio may be intermittent.
Aurora - Aurora may be seen as low as Pennsylvania to Iowa to Oregon.
12:33 UTC
Space Weather Message Code: ALTK06
Serial Number: 584
Issue Time: 2024 Aug 12 1233 UTC
ALERT: Geomagnetic K-index of 6
Threshold Reached: 2024 Aug 12 1229 UTC
Synoptic Period: 1200-1500 UTC
Active Warning: Yes
NOAA Scale: G2 - Moderate
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 55 degrees Geomagnetic Latitude.
Induced Currents - Power grid fluctuations can occur. High-latitude power systems may experience voltage alarms.
Spacecraft - Satellite orientation irregularities may occur; increased drag on low Earth-orbit satellites is possible.
Radio - HF (high frequency) radio propagation can fade at higher latitudes.
Aurora - Aurora may be seen as low as New York to Wisconsin to Washington state.
12:21 UTC
Space Weather Message Code: ALTK05
Serial Number: 1622
Issue Time: 2024 Aug 12 1221 UTC
ALERT: Geomagnetic K-index of 5
Threshold Reached: 2024 Aug 12 1220 UTC
Synoptic Period: 1200-1500 UTC
Active Warning: Yes
NOAA Scale: G1 - Minor
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.
11:52 UTC
Space Weather Message Code: ALTK07
Serial Number: 160
Issue Time: 2024 Aug 12 1152 UTC
ALERT: Geomagnetic K-index of 7
Threshold Reached: 2024 Aug 12 1152 UTC
Synoptic Period: 0900-1200 UTC
Active Warning: Yes
NOAA Scale: G3 - Strong
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 50 degrees Geomagnetic Latitude.
Induced Currents - Power system voltage irregularities possible, false alarms may be triggered on some protection devices.
Spacecraft - Systems may experience surface charging; increased drag on low Earth-orbit satellites and orientation problems may occur.
Navigation - Intermittent satellite navigation (GPS) problems, including loss-of-lock and increased range error may occur.
Radio - HF (high frequency) radio may be intermittent.
Aurora - Aurora may be seen as low as Pennsylvania to Iowa to Oregon.
10:06 UTC
Space Weather Message Code: ALTK06
Serial Number: 583
Issue Time: 2024 Aug 12 1006 UTC
ALERT: Geomagnetic K-index of 6
Threshold Reached: 2024 Aug 12 1005 UTC
Synoptic Period: 0900-1200 UTC
Active Warning: Yes
NOAA Scale: G2 - Moderate
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 55 degrees Geomagnetic Latitude.
Induced Currents - Power grid fluctuations can occur. High-latitude power systems may experience voltage alarms.
Spacecraft - Satellite orientation irregularities may occur; increased drag on low Earth-orbit satellites is possible.
Radio - HF (high frequency) radio propagation can fade at higher latitudes.
Aurora - Aurora may be seen as low as New York to Wisconsin to Washington state.
09:55 UTC
Space Weather Message Code: ALTK05
Serial Number: 1621
Issue Time: 2024 Aug 12 0955 UTC
ALERT: Geomagnetic K-index of 5
Threshold Reached: 2024 Aug 12 0952 UTC
Synoptic Period: 0900-1200 UTC
Active Warning: Yes
NOAA Scale: G1 - Minor
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.
09:04 UTC
Space Weather Message Code: WARK06
Serial Number: 534
Issue Time: 2024 Aug 12 0904 UTC
EXTENDED WARNING: Geomagnetic K-Index of 6 expected
Extension to Serial Number: 533
Valid From: 2024 Aug 12 0055 UTC
Now Valid Until: 2024 Aug 12 1800 UTC
Warning Condition: Persistence
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 55 degrees Geomagnetic Latitude.
Induced Currents - Power grid fluctuations can occur. High-latitude power systems may experience voltage alarms.
Spacecraft - Satellite orientation irregularities may occur; increased drag on low Earth-orbit satellites is possible.
Radio - HF (high frequency) radio propagation can fade at higher latitudes.
Aurora - Aurora may be seen as low as New York to Wisconsin to Washington state.
09:04 UTC
Space Weather Message Code: WARK05
Serial Number: 1907
Issue Time: 2024 Aug 12 0904 UTC
EXTENDED WARNING: Geomagnetic K-index of 5 expected
Extension to Serial Number: 1906
Valid From: 2024 Aug 11 0745 UTC
Now Valid Until: 2024 Aug 12 2100 UTC
Warning Condition: Persistence
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.
08:58 UTC
Space Weather Message Code: WARK07
Serial Number: 111
Issue Time: 2024 Aug 12 0858 UTC
EXTENDED WARNING: Geomagnetic K-index of 7 or greater expected
Extension to Serial Number: 110
Valid From: 2024 Aug 12 0505 UTC
Now Valid Until: 2024 Aug 12 1500 UTC
Warning Condition: Persistence
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 50 degrees Geomagnetic Latitude.
Induced Currents - Power system voltage irregularities possible, false alarms may be triggered on some protection devices.
Spacecraft - Systems may experience surface charging; increased drag on low Earth-orbit satellites and orientation problems may occur.
Navigation - Intermittent satellite navigation (GPS) problems, including loss-of-lock and increased range error may occur.
Radio - HF (high frequency) radio may be intermittent.
Aurora - Aurora may be seen as low as Pennsylvania to Iowa to Oregon.
08:11 UTC
Space Weather Message Code: ALTK07
Serial Number: 159
Issue Time: 2024 Aug 12 0811 UTC
ALERT: Geomagnetic K-index of 7
Threshold Reached: 2024 Aug 12 0808 UTC
Synoptic Period: 0600-0900 UTC
Active Warning: Yes
NOAA Scale: G3 - Strong
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 50 degrees Geomagnetic Latitude.
Induced Currents - Power system voltage irregularities possible, false alarms may be triggered on some protection devices.
Spacecraft - Systems may experience surface charging; increased drag on low Earth-orbit satellites and orientation problems may occur.
Navigation - Intermittent satellite navigation (GPS) problems, including loss-of-lock and increased range error may occur.
Radio - HF (high frequency) radio may be intermittent.
Aurora - Aurora may be seen as low as Pennsylvania to Iowa to Oregon.
06:39 UTC
Space Weather Message Code: ALTK06
Serial Number: 582
Issue Time: 2024 Aug 12 0639 UTC
ALERT: Geomagnetic K-index of 6
Threshold Reached: 2024 Aug 12 0638 UTC
Synoptic Period: 0600-0900 UTC
Active Warning: Yes
NOAA Scale: G2 - Moderate
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 55 degrees Geomagnetic Latitude.
Induced Currents - Power grid fluctuations can occur. High-latitude power systems may experience voltage alarms.
Spacecraft - Satellite orientation irregularities may occur; increased drag on low Earth-orbit satellites is possible.
Radio - HF (high frequency) radio propagation can fade at higher latitudes.
Aurora - Aurora may be seen as low as New York to Wisconsin to Washington state.
06:22 UTC
Space Weather Message Code: ALTK05
Serial Number: 1620
Issue Time: 2024 Aug 12 0622 UTC
ALERT: Geomagnetic K-index of 5
Threshold Reached: 2024 Aug 12 0618 UTC
Synoptic Period: 0600-0900 UTC
Active Warning: Yes
NOAA Scale: G1 - Minor
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.
05:28 UTC
Space Weather Message Code: ALTK07
Serial Number: 158
Issue Time: 2024 Aug 12 0528 UTC
ALERT: Geomagnetic K-index of 7
Threshold Reached: 2024 Aug 12 0525 UTC
Synoptic Period: 0300-0600 UTC
Active Warning: Yes
NOAA Scale: G3 - Strong
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 50 degrees Geomagnetic Latitude.
Induced Currents - Power system voltage irregularities possible, false alarms may be triggered on some protection devices.
Spacecraft - Systems may experience surface charging; increased drag on low Earth-orbit satellites and orientation problems may occur.
Navigation - Intermittent satellite navigation (GPS) problems, including loss-of-lock and increased range error may occur.
Radio - HF (high frequency) radio may be intermittent.
Aurora - Aurora may be seen as low as Pennsylvania to Iowa to Oregon.
05:06 UTC
Space Weather Message Code: WARK07
Serial Number: 110
Issue Time: 2024 Aug 12 0506 UTC
WARNING: Geomagnetic K-index of 7 or greater expected
Valid From: 2024 Aug 12 0505 UTC
Valid To: 2024 Aug 12 0900 UTC
Warning Condition: Onset
NOAA Scale: G3 or greater
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 50 degrees Geomagnetic Latitude.
Induced Currents - Power system voltage irregularities possible, false alarms may be triggered on some protection devices.
Spacecraft - Systems may experience surface charging; increased drag on low Earth-orbit satellites and orientation problems may occur.
Navigation - Intermittent satellite navigation (GPS) problems, including loss-of-lock and increased range error may occur.
Radio - HF (high frequency) radio may be intermittent.
Aurora - Aurora may be seen as low as Pennsylvania to Iowa to Oregon.
04:12 UTC
Space Weather Message Code: ALTK06
Serial Number: 581
Issue Time: 2024 Aug 12 0412 UTC
ALERT: Geomagnetic K-index of 6
Threshold Reached: 2024 Aug 12 0412 UTC
Synoptic Period: 0300-0600 UTC
Active Warning: Yes
NOAA Scale: G2 - Moderate
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 55 degrees Geomagnetic Latitude.
Induced Currents - Power grid fluctuations can occur. High-latitude power systems may experience voltage alarms.
Spacecraft - Satellite orientation irregularities may occur; increased drag on low Earth-orbit satellites is possible.
Radio - HF (high frequency) radio propagation can fade at higher latitudes.
Aurora - Aurora may be seen as low as New York to Wisconsin to Washington state.
03:21 UTC
Space Weather Message Code: ALTK05
Serial Number: 1619
Issue Time: 2024 Aug 12 0321 UTC
ALERT: Geomagnetic K-index of 5
Threshold Reached: 2024 Aug 12 0321 UTC
Synoptic Period: 0300-0600 UTC
Active Warning: Yes
NOAA Scale: G1 - Minor
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.
00:56 UTC
Space Weather Message Code: ALTK06
Serial Number: 580
Issue Time: 2024 Aug 12 0056 UTC
ALERT: Geomagnetic K-index of 6
Threshold Reached: 2024 Aug 12 0057 UTC
Synoptic Period: 0000-0300 UTC
Active Warning: Yes
NOAA Scale: G2 - Moderate
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 55 degrees Geomagnetic Latitude.
Induced Currents - Power grid fluctuations can occur. High-latitude power systems may experience voltage alarms.
Spacecraft - Satellite orientation irregularities may occur; increased drag on low Earth-orbit satellites is possible.
Radio - HF (high frequency) radio propagation can fade at higher latitudes.
Aurora - Aurora may be seen as low as New York to Wisconsin to Washington state.
00:55 UTC
Space Weather Message Code: WARK06
Serial Number: 533
Issue Time: 2024 Aug 12 0055 UTC
WARNING: Geomagnetic K-Index of 6 expected
Valid From: 2024 Aug 12 0055 UTC
Valid To: 2024 Aug 12 1200 UTC
Warning Condition: Onset
NOAA Scale: G2 - Moderate
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 55 degrees Geomagnetic Latitude.
Induced Currents - Power grid fluctuations can occur. High-latitude power systems may experience voltage alarms.
Spacecraft - Satellite orientation irregularities may occur; increased drag on low Earth-orbit satellites is possible.
Radio - HF (high frequency) radio propagation can fade at higher latitudes.
Aurora - Aurora may be seen as low as New York to Wisconsin to Washington state.
00:55 UTC
Space Weather Message Code: WARK04
Serial Number: 4661
Issue Time: 2024 Aug 12 0055 UTC
EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 4660
Valid From: 2024 Aug 11 0720 UTC
Now Valid Until: 2024 Aug 12 2359 UTC
Warning Condition: persistence
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.
00:55 UTC
Space Weather Message Code: WARK05
Serial Number: 1906
Issue Time: 2024 Aug 12 0055 UTC
EXTENDED WARNING: Geomagnetic K-index of 5 expected
Extension to Serial Number: 1905
Valid From: 2024 Aug 11 0745 UTC
Now Valid Until: 2024 Aug 12 1500 UTC
Warning Condition: Persistence
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.
00:44 UTC
Space Weather Message Code: ALTK05
Serial Number: 1618
Issue Time: 2024 Aug 12 0044 UTC
ALERT: Geomagnetic K-index of 5
Threshold Reached: 2024 Aug 12 0040 UTC
Synoptic Period: 0000-0300 UTC
Active Warning: Yes
NOAA Scale: G1 - Minor
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.
星期日, 11 8月 2024
23:59 UTC
Space Weather Message Code: ALTK05
Serial Number: 1617
Issue Time: 2024 Aug 11 2359 UTC
ALERT: Geomagnetic K-index of 5
Threshold Reached: 2024 Aug 11 2354 UTC
Synoptic Period: 2100-2400 UTC
Active Warning: Yes
NOAA Scale: G1 - Minor
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.
20:46 UTC
Space Weather Message Code: WARK04
Serial Number: 4660
Issue Time: 2024 Aug 11 2046 UTC
EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 4659
Valid From: 2024 Aug 11 0720 UTC
Now Valid Until: 2024 Aug 12 1200 UTC
Warning Condition: persistence
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.
20:46 UTC
Space Weather Message Code: WARK05
Serial Number: 1905
Issue Time: 2024 Aug 11 2046 UTC
EXTENDED WARNING: Geomagnetic K-index of 5 expected
Extension to Serial Number: 1904
Valid From: 2024 Aug 11 0745 UTC
Now Valid Until: 2024 Aug 12 0300 UTC
Warning Condition: Persistence
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.
14:09 UTC
Space Weather Message Code: ALTK05
Serial Number: 1616
Issue Time: 2024 Aug 11 1409 UTC
ALERT: Geomagnetic K-index of 5
Threshold Reached: 2024 Aug 11 1400 UTC
Synoptic Period: 1200-1500 UTC
Active Warning: Yes
NOAA Scale: G1 - Minor
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.
14:09 UTC
Space Weather Message Code: WARK05
Serial Number: 1904
Issue Time: 2024 Aug 11 1409 UTC
EXTENDED WARNING: Geomagnetic K-index of 5 expected
Extension to Serial Number: 1903
Valid From: 2024 Aug 11 0745 UTC
Now Valid Until: 2024 Aug 11 2100 UTC
Warning Condition: Persistence
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.
14:09 UTC
Space Weather Message Code: WARK04
Serial Number: 4659
Issue Time: 2024 Aug 11 1409 UTC
EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 4658
Valid From: 2024 Aug 11 0720 UTC
Now Valid Until: 2024 Aug 12 0300 UTC
Warning Condition: persistence
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.
08:35 UTC
Space Weather Message Code: ALTK05
Serial Number: 1615
Issue Time: 2024 Aug 11 0835 UTC
ALERT: Geomagnetic K-index of 5
Threshold Reached: 2024 Aug 11 0832 UTC
Synoptic Period: 0600-0900 UTC
Active Warning: Yes
NOAA Scale: G1 - Minor
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.
07:44 UTC
Space Weather Message Code: WARK05
Serial Number: 1903
Issue Time: 2024 Aug 11 0744 UTC
WARNING: Geomagnetic K-index of 5 expected
Valid From: 2024 Aug 11 0745 UTC
Valid To: 2024 Aug 11 1500 UTC
Warning Condition: Onset
NOAA Scale: G1 - Minor
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.
07:29 UTC
Space Weather Message Code: ALTK04
Serial Number: 2464
Issue Time: 2024 Aug 11 0729 UTC
ALERT: Geomagnetic K-index of 4
Threshold Reached: 2024 Aug 11 0728 UTC
Synoptic Period: 0600-0900 UTC
Active Warning: Yes
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.
07:21 UTC
Space Weather Message Code: WARK04
Serial Number: 4658
Issue Time: 2024 Aug 11 0721 UTC
WARNING: Geomagnetic K-index of 4 expected
Valid From: 2024 Aug 11 0720 UTC
Valid To: 2024 Aug 11 1800 UTC
Warning Condition: Onset
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.
星期六, 10 8月 2024
03:08 UTC
Space Weather Message Code: SUMXM5
Serial Number: 254
Issue Time: 2024 Aug 10 0308 UTC
SUMMARY: X-ray Event exceeded M5
Begin Time: 2024 Aug 10 0214 UTC
Maximum Time: 2024 Aug 10 0237 UTC
End Time: 2024 Aug 10 0252 UTC
X-ray Class: M5.3
Optical Class: sf
Location: S10E04
NOAA Scale: R2 - Moderate
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact centered primarily on sub-solar point on the sunlit side of Earth.
Radio - Limited blackout of HF (high frequency) radio communication for tens of minutes.
02:54 UTC
Space Weather Message Code: SUM10R
Serial Number: 831
Issue Time: 2024 Aug 10 0254 UTC
SUMMARY: 10cm Radio Burst
Begin Time: 2024 Aug 10 0228 UTC
Maximum Time: 2024 Aug 10 0230 UTC
End Time: 2024 Aug 10 0231 UTC
Duration: 3 minutes
Peak Flux: 320 sfu
Latest Penticton Noon Flux: 306 sfu
Description: A 10cm radio burst indicates that the electromagnetic burst associated with a solar flare at the 10cm wavelength was double or greater than the initial 10cm radio background. This can be indicative of significant radio noise in association with a solar flare. This noise is generally short-lived but can cause interference for sensitive receivers including radar, GPS, and satellite communications.
02:39 UTC
Space Weather Message Code: ALTXMF
Serial Number: 424
Issue Time: 2024 Aug 10 0239 UTC
ALERT: X-Ray Flux exceeded M5
Threshold Reached: 2024 Aug 10 0234 UTC
NOAA Scale: R2 - Moderate
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact centered on sub-solar point on the sunlit side of Earth. Extent of blackout of HF (high frequency) radio communication dependent upon current X-ray Flux intensity. For real-time information on affected area and expected duration please see http://www.swpc.noaa.gov/products/d-region-absorption-predictions-d-rap.
星期五, 9 8月 2024
21:35 UTC
Space Weather Message Code: ALTTP2
Serial Number: 1347
Issue Time: 2024 Aug 09 2135 UTC
ALERT: Type II Radio Emission
Begin Time: 2024 Aug 09 2124 UTC
Estimated Velocity: 606 km/s
Description: Type II emissions occur in association with eruptions on the sun and typically indicate a coronal mass ejection is associated with a flare event.
20:08 UTC
Space Weather Message Code: WATA30
Serial Number: 240
Issue Time: 2024 Aug 09 2008 UTC
WATCH: Geomagnetic Storm Category G2 Predicted
Highest Storm Level Predicted by Day:
Aug 10: G2 (Moderate) Aug 11: G2 (Moderate) Aug 12: G2 (Moderate)
THIS SUPERSEDES ANY/ALL PRIOR WATCHES IN EFFECT
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 55 degrees Geomagnetic Latitude.
Induced Currents - Power grid fluctuations can occur. High-latitude power systems may experience voltage alarms.
Spacecraft - Satellite orientation irregularities may occur; increased drag on low Earth-orbit satellites is possible.
Radio - HF (high frequency) radio propagation can fade at higher latitudes.
Aurora - Aurora may be seen as low as New York to Wisconsin to Washington state.
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