NOAA SWPC alarmer, annonceringer og advarsler

National Oceanic and Atmospheric Administration Space Weather Prediction Center (NOAA SWPC) er den officielle rumvejrsmyndighed fra USA, der giver advarsler, observationer og advarsler om rumvejrsforstyrrelser. Nedenfor finder du de seneste rumvejrsalarmer, observationer og advarsler udstedt af NOAA SWPC.

mandag, 9 september 2024

19:43 UTC

Space Weather Message Code: WARPX1
Serial Number: 575
Issue Time: 2024 Sep 09 1943 UTC

EXTENDED WARNING: Proton 10MeV Integral Flux above 10pfu expected
Extension to Serial Number: 574
Valid From: 2024 Sep 09 0750 UTC
Now Valid Until: 2024 Sep 10 1200 UTC
Warning Condition: Persistence
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.

17:22 UTC

Space Weather Message Code: ALTPX1
Serial Number: 350
Issue Time: 2024 Sep 09 1722 UTC

ALERT: Proton Event 10MeV Integral Flux exceeded 10pfu
Begin Time: 2024 Sep 09 1640 UTC
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.

07:49 UTC

Space Weather Message Code: WARPX1
Serial Number: 574
Issue Time: 2024 Sep 09 0749 UTC

WARNING: Proton 10MeV Integral Flux above 10pfu expected
Valid From: 2024 Sep 09 0750 UTC
Valid To: 2024 Sep 09 2000 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.

05:54 UTC

Space Weather Message Code: ALTTP2
Serial Number: 1355
Issue Time: 2024 Sep 09 0554 UTC

ALERT: Type II Radio Emission
Begin Time: 2024 Sep 09 0510 UTC
Estimated Velocity: 668 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.

søndag, 8 september 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.

onsdag, 4 september 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.

tirsdag, 3 september 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.

søndag, 1 september 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.

lørdag, 31 august 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.

fredag, 30 august 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.

onsdag, 28 august 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.

tirsdag, 27 august 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.

søndag, 25 august 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.

fredag, 23 august 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.

torsdag, 22 august 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.

onsdag, 21 august 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.

søndag, 18 august 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.

lørdag, 17 august 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.

torsdag, 15 august 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.

onsdag, 14 august 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.

tirsdag, 13 august 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.

mandag, 12 august 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.

søndag, 11 august 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: 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.

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.

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.