Alertas NOAA SWPC, Relógios e Avisos

O Centro de Previsão do Clima Espacial da Administração Nacional Oceânica e Atmosférica (SWPC NOAA) é a agência oficial do clima espacial dos Estados Unidos que fornece alertas, observações e avisos sobre distúrbios do clima espacial. Abaixo, você encontrará os alertas, observações e avisos do clima espacial mais recentes emitidos pelo SWPC do NOAA.

terça-feira, 5 dezembro 2023

17:55 UTC

Space Weather Message Code: WARK04
Serial Number: 4524
Issue Time: 2023 Dec 05 1755 UTC

EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 4523
Valid From: 2023 Dec 05 0451 UTC
Now Valid Until: 2023 Dec 06 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.

11:47 UTC

Space Weather Message Code: WARK04
Serial Number: 4523
Issue Time: 2023 Dec 05 1147 UTC

EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 4522
Valid From: 2023 Dec 05 0451 UTC
Now Valid Until: 2023 Dec 05 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.

04:51 UTC

Space Weather Message Code: WARK04
Serial Number: 4522
Issue Time: 2023 Dec 05 0451 UTC

WARNING: Geomagnetic K-index of 4 expected
Valid From: 2023 Dec 05 0451 UTC
Valid To: 2023 Dec 05 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.

segunda-feira, 4 dezembro 2023

07:02 UTC

Space Weather Message Code: WARK04
Serial Number: 4521
Issue Time: 2023 Dec 04 0702 UTC

WARNING: Geomagnetic K-index of 4 expected
Valid From: 2023 Dec 04 0700 UTC
Valid To: 2023 Dec 04 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.

sábado, 2 dezembro 2023

21:21 UTC

Space Weather Message Code: WATA30
Serial Number: 226
Issue Time: 2023 Dec 02 2121 UTC

WATCH: Geomagnetic Storm Category G2 Predicted

Highest Storm Level Predicted by Day:
Dec 03: None (Below G1) Dec 04: G2 (Moderate) Dec 05: 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.

05:51 UTC

Space Weather Message Code: WARK04
Serial Number: 4520
Issue Time: 2023 Dec 02 0551 UTC

EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 4519
Valid From: 2023 Dec 01 0028 UTC
Now Valid Until: 2023 Dec 02 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.

05:50 UTC

Space Weather Message Code: WARK05
Serial Number: 1845
Issue Time: 2023 Dec 02 0550 UTC

EXTENDED WARNING: Geomagnetic K-index of 5 expected
Extension to Serial Number: 1844
Valid From: 2023 Dec 01 0035 UTC
Now Valid Until: 2023 Dec 02 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.

01:24 UTC

Space Weather Message Code: ALTK05
Serial Number: 1543
Issue Time: 2023 Dec 02 0124 UTC

ALERT: Geomagnetic K-index of 5
Threshold Reached: 2023 Dec 02 0122 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.

sexta-feira, 1 dezembro 2023

23:38 UTC

Space Weather Message Code: ALTK05
Serial Number: 1542
Issue Time: 2023 Dec 01 2338 UTC

ALERT: Geomagnetic K-index of 5
Threshold Reached: 2023 Dec 01 2335 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.

20:55 UTC

Space Weather Message Code: WARK06
Serial Number: 507
Issue Time: 2023 Dec 01 2055 UTC

EXTENDED WARNING: Geomagnetic K-Index of 6 expected
Extension to Serial Number: 506
Valid From: 2023 Dec 01 0957 UTC
Now Valid Until: 2023 Dec 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 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.

20:51 UTC

Space Weather Message Code: ALTK05
Serial Number: 1541
Issue Time: 2023 Dec 01 2051 UTC

ALERT: Geomagnetic K-index of 5
Threshold Reached: 2023 Dec 01 2050 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.

18:01 UTC

Space Weather Message Code: ALTK05
Serial Number: 1540
Issue Time: 2023 Dec 01 1801 UTC

ALERT: Geomagnetic K-index of 5
Threshold Reached: 2023 Dec 01 1759 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.

14:57 UTC

Space Weather Message Code: WARK06
Serial Number: 506
Issue Time: 2023 Dec 01 1457 UTC

EXTENDED WARNING: Geomagnetic K-Index of 6 expected
Extension to Serial Number: 505
Valid From: 2023 Dec 01 0957 UTC
Now Valid Until: 2023 Dec 01 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.

14:57 UTC

Space Weather Message Code: WARK04
Serial Number: 4519
Issue Time: 2023 Dec 01 1457 UTC

EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 4518
Valid From: 2023 Dec 01 0028 UTC
Now Valid Until: 2023 Dec 02 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 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.

14:57 UTC

Space Weather Message Code: WARK07
Serial Number: 98
Issue Time: 2023 Dec 01 1457 UTC

EXTENDED WARNING: Geomagnetic K-index of 7 or greater expected
Extension to Serial Number: 97
Valid From: 2023 Dec 01 1116 UTC
Now Valid Until: 2023 Dec 01 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 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.

14:57 UTC

Space Weather Message Code: WARK05
Serial Number: 1844
Issue Time: 2023 Dec 01 1457 UTC

EXTENDED WARNING: Geomagnetic K-index of 5 expected
Extension to Serial Number: 1842
Valid From: 2023 Dec 01 0035 UTC
Now Valid Until: 2023 Dec 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 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.

13:49 UTC

Space Weather Message Code: ALTK06
Serial Number: 546
Issue Time: 2023 Dec 01 1349 UTC

ALERT: Geomagnetic K-index of 6
Threshold Reached: 2023 Dec 01 1349 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.

12:22 UTC

Space Weather Message Code: ALTK05
Serial Number: 1539
Issue Time: 2023 Dec 01 1222 UTC

ALERT: Geomagnetic K-index of 5
Threshold Reached: 2023 Dec 01 1218 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.

11:43 UTC

Space Weather Message Code: WARK05
Serial Number: 1842
Issue Time: 2023 Dec 01 1143 UTC

EXTENDED WARNING: Geomagnetic K-index of 5 expected
Extension to Serial Number: 1841
Valid From: 2023 Dec 01 0035 UTC
Now Valid Until: 2023 Dec 01 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.

11:43 UTC

Space Weather Message Code: WARK06
Serial Number: 505
Issue Time: 2023 Dec 01 1143 UTC

EXTENDED WARNING: Geomagnetic K-Index of 6 expected
Extension to Serial Number: 504
Valid From: 2023 Dec 01 0957 UTC
Now Valid Until: 2023 Dec 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 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.

11:43 UTC

Space Weather Message Code: WARK04
Serial Number: 4518
Issue Time: 2023 Dec 01 1143 UTC

EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 4517
Valid From: 2023 Dec 01 0028 UTC
Now Valid Until: 2023 Dec 01 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.

11:24 UTC

Space Weather Message Code: ALTK07
Serial Number: 138
Issue Time: 2023 Dec 01 1124 UTC

ALERT: Geomagnetic K-index of 7
Threshold Reached: 2023 Dec 01 1114 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.

11:16 UTC

Space Weather Message Code: WARK07
Serial Number: 97
Issue Time: 2023 Dec 01 1116 UTC

WARNING: Geomagnetic K-index of 7 or greater expected
Valid From: 2023 Dec 01 1116 UTC
Valid To: 2023 Dec 01 1500 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.

10:55 UTC

Space Weather Message Code: ALTK06
Serial Number: 545
Issue Time: 2023 Dec 01 1055 UTC

ALERT: Geomagnetic K-index of 6
Threshold Reached: 2023 Dec 01 1051 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.

10:38 UTC

Space Weather Message Code: ALTK05
Serial Number: 1538
Issue Time: 2023 Dec 01 1038 UTC

ALERT: Geomagnetic K-index of 5
Threshold Reached: 2023 Dec 01 1032 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.

09:58 UTC

Space Weather Message Code: WARK06
Serial Number: 504
Issue Time: 2023 Dec 01 0958 UTC

WARNING: Geomagnetic K-Index of 6 expected
Valid From: 2023 Dec 01 0957 UTC
Valid To: 2023 Dec 01 1500 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.

05:54 UTC

Space Weather Message Code: WARK05
Serial Number: 1841
Issue Time: 2023 Dec 01 0554 UTC

EXTENDED WARNING: Geomagnetic K-index of 5 expected
Extension to Serial Number: 1840
Valid From: 2023 Dec 01 0035 UTC
Now Valid Until: 2023 Dec 01 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 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.

04:52 UTC

Space Weather Message Code: WARK04
Serial Number: 4517
Issue Time: 2023 Dec 01 0452 UTC

EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 4516
Valid From: 2023 Dec 01 0028 UTC
Now Valid Until: 2023 Dec 01 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.

02:06 UTC

Space Weather Message Code: ALTK04
Serial Number: 2416
Issue Time: 2023 Dec 01 0206 UTC

ALERT: Geomagnetic K-index of 4
Threshold Reached: 2023 Dec 01 0205 UTC
Synoptic Period: 0000-0300 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.

00:36 UTC

Space Weather Message Code: WARK05
Serial Number: 1840
Issue Time: 2023 Dec 01 0036 UTC

WARNING: Geomagnetic K-index of 5 expected
Valid From: 2023 Dec 01 0035 UTC
Valid To: 2023 Dec 01 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.

00:32 UTC

Space Weather Message Code: SUMSUD
Serial Number: 264
Issue Time: 2023 Dec 01 0032 UTC

SUMMARY: Geomagnetic Sudden Impulse
Observed: 2023 Dec 01 0021 UTC
Deviation: 36 nT
Station: FRD

NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation

00:29 UTC

Space Weather Message Code: WARK04
Serial Number: 4516
Issue Time: 2023 Dec 01 0029 UTC

WARNING: Geomagnetic K-index of 4 expected
Valid From: 2023 Dec 01 0028 UTC
Valid To: 2023 Dec 01 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.

00:13 UTC

Space Weather Message Code: WARSUD
Serial Number: 217
Issue Time: 2023 Dec 01 0013 UTC

WARNING: Geomagnetic Sudden Impulse expected
Valid From: 2023 Dec 01 0030 UTC
Valid To: 2023 Dec 01 0130 UTC
IP Shock Passage Observed: 2023 Dec 01 0000 UTC

NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation

quarta-feira, 29 novembro 2023

17:56 UTC

Space Weather Message Code: WATA50
Serial Number: 73
Issue Time: 2023 Nov 29 1756 UTC

WATCH: Geomagnetic Storm Category G3 Predicted

Highest Storm Level Predicted by Day:
Nov 30: G1 (Minor) Dec 01: G3 (Strong) Dec 02: 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 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.

terça-feira, 28 novembro 2023

20:27 UTC

Space Weather Message Code: ALTTP2
Serial Number: 1257
Issue Time: 2023 Nov 28 2027 UTC

ALERT: Type II Radio Emission
Begin Time: 2023 Nov 28 1959 UTC
Estimated Velocity: 854 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.

20:20 UTC

Space Weather Message Code: SUM10R
Serial Number: 771
Issue Time: 2023 Nov 28 2020 UTC

SUMMARY: 10cm Radio Burst
Begin Time: 2023 Nov 28 1936 UTC
Maximum Time: 2023 Nov 28 1949 UTC
End Time: 2023 Nov 28 1956 UTC
Duration: 10 minutes
Peak Flux: 720 sfu
Latest Penticton Noon Flux: 187 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.

20:18 UTC

Space Weather Message Code: SUMXM5
Serial Number: 196
Issue Time: 2023 Nov 28 2018 UTC

SUMMARY: X-ray Event exceeded M5
Begin Time: 2023 Nov 28 1935 UTC
Maximum Time: 2023 Nov 28 1950 UTC
End Time: 2023 Nov 28 2009 UTC
X-ray Class: M9.8
Location: S17E01
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.

20:00 UTC

Space Weather Message Code: ALTTP2
Serial Number: 1256
Issue Time: 2023 Nov 28 2000 UTC

ALERT: Type II Radio Emission
Begin Time: 2023 Nov 28 1934 UTC
Estimated Velocity: 340 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.

19:58 UTC

Space Weather Message Code: SUM10R
Serial Number: 770
Issue Time: 2023 Nov 28 1958 UTC

SUMMARY: 10cm Radio Burst
Begin Time: 2023 Nov 28 1936 UTC
Maximum Time: 2023 Nov 28 1939 UTC
End Time: 2023 Nov 28 1940 UTC
Duration: 4 minutes
Peak Flux: 360 sfu
Latest Penticton Noon Flux: 187 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.

19:57 UTC

Space Weather Message Code: SUM10R
Serial Number: 769
Issue Time: 2023 Nov 28 1957 UTC

SUMMARY: 10cm Radio Burst
Begin Time: 2023 Nov 28 1921 UTC
Maximum Time: 2023 Nov 28 1923 UTC
End Time: 2023 Nov 28 1926 UTC
Duration: 5 minutes
Peak Flux: 210 sfu
Latest Penticton Noon Flux: 187 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.

19:46 UTC

Space Weather Message Code: ALTXMF
Serial Number: 329
Issue Time: 2023 Nov 28 1946 UTC

ALERT: X-Ray Flux exceeded M5
Threshold Reached: 2023 Nov 28 1940 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.

19:45 UTC

Space Weather Message Code: WATA30
Serial Number: 225
Issue Time: 2023 Nov 28 1945 UTC

WATCH: Geomagnetic Storm Category G2 Predicted

Highest Storm Level Predicted by Day:
Nov 29: None (Below G1) Nov 30: G1 (Minor) Dec 01: 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.

segunda-feira, 27 novembro 2023

18:19 UTC

Space Weather Message Code: WATA20
Serial Number: 980
Issue Time: 2023 Nov 27 1819 UTC

WATCH: Geomagnetic Storm Category G1 Predicted

Highest Storm Level Predicted by Day:
Nov 28: None (Below G1) Nov 29: None (Below G1) Nov 30: 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.

domingo, 26 novembro 2023

11:55 UTC

Space Weather Message Code: WARK04
Serial Number: 4515
Issue Time: 2023 Nov 26 1155 UTC

EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 4514
Valid From: 2023 Nov 25 0422 UTC
Now Valid Until: 2023 Nov 26 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.

08:26 UTC

Space Weather Message Code: ALTTP4
Serial Number: 617
Issue Time: 2023 Nov 26 0826 UTC

ALERT: Type IV Radio Emission
Begin Time: 2023 Nov 26 0752 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.

08:09 UTC

Space Weather Message Code: ALTTP2
Serial Number: 1255
Issue Time: 2023 Nov 26 0809 UTC

ALERT: Type II Radio Emission
Begin Time: 2023 Nov 26 0747 UTC
Estimated Velocity: 413 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.

sábado, 25 novembro 2023

20:06 UTC

Space Weather Message Code: WARK06
Serial Number: 503
Issue Time: 2023 Nov 25 2006 UTC

WARNING: Geomagnetic K-Index of 6 expected
Valid From: 2023 Nov 25 2003 UTC
Valid To: 2023 Nov 25 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.

20:06 UTC

Space Weather Message Code: ALTK06
Serial Number: 544
Issue Time: 2023 Nov 25 2006 UTC

ALERT: Geomagnetic K-index of 6
Threshold Reached: 2023 Nov 25 2003 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.

20:06 UTC

Space Weather Message Code: WARK05
Serial Number: 1839
Issue Time: 2023 Nov 25 2006 UTC

EXTENDED WARNING: Geomagnetic K-index of 5 expected
Extension to Serial Number: 1838
Valid From: 2023 Nov 25 0824 UTC
Now Valid Until: 2023 Nov 26 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 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.

20:06 UTC

Space Weather Message Code: WARK04
Serial Number: 4514
Issue Time: 2023 Nov 25 2006 UTC

EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 4513
Valid From: 2023 Nov 25 0422 UTC
Now Valid Until: 2023 Nov 26 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.

19:28 UTC

Space Weather Message Code: ALTK05
Serial Number: 1537
Issue Time: 2023 Nov 25 1928 UTC

ALERT: Geomagnetic K-index of 5
Threshold Reached: 2023 Nov 25 1926 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.

17:36 UTC

Space Weather Message Code: ALTK05
Serial Number: 1536
Issue Time: 2023 Nov 25 1736 UTC

ALERT: Geomagnetic K-index of 5
Threshold Reached: 2023 Nov 25 1734 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.

14:52 UTC

Space Weather Message Code: WARK05
Serial Number: 1838
Issue Time: 2023 Nov 25 1452 UTC

EXTENDED WARNING: Geomagnetic K-index of 5 expected
Extension to Serial Number: 1837
Valid From: 2023 Nov 25 0824 UTC
Now Valid Until: 2023 Nov 25 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.

14:50 UTC

Space Weather Message Code: WARK04
Serial Number: 4513
Issue Time: 2023 Nov 25 1450 UTC

EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 4512
Valid From: 2023 Nov 25 0422 UTC
Now Valid Until: 2023 Nov 25 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.

13:27 UTC

Space Weather Message Code: ALTK05
Serial Number: 1535
Issue Time: 2023 Nov 25 1327 UTC

ALERT: Geomagnetic K-index of 5
Threshold Reached: 2023 Nov 25 1327 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.

12:03 UTC

Space Weather Message Code: ALTK05
Serial Number: 1534
Issue Time: 2023 Nov 25 1203 UTC

ALERT: Geomagnetic K-index of 5
Threshold Reached: 2023 Nov 25 1159 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.

09:01 UTC

Space Weather Message Code: ALTK05
Serial Number: 1533
Issue Time: 2023 Nov 25 0901 UTC

ALERT: Geomagnetic K-index of 5
Threshold Reached: 2023 Nov 25 0859 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.

08:52 UTC

Space Weather Message Code: SUMSUD
Serial Number: 263
Issue Time: 2023 Nov 25 0852 UTC

SUMMARY: Geomagnetic Sudden Impulse
Observed: 2023 Nov 25 0835 UTC
Deviation: 46 nT
Station: CNB

NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation

08:43 UTC

Space Weather Message Code: ALTK04
Serial Number: 2415
Issue Time: 2023 Nov 25 0843 UTC

ALERT: Geomagnetic K-index of 4
Threshold Reached: 2023 Nov 25 0843 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.

08:18 UTC

Space Weather Message Code: WARK05
Serial Number: 1837
Issue Time: 2023 Nov 25 0818 UTC

WARNING: Geomagnetic K-index of 5 expected
Valid From: 2023 Nov 25 0824 UTC
Valid To: 2023 Nov 25 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.

08:14 UTC

Space Weather Message Code: WARSUD
Serial Number: 216
Issue Time: 2023 Nov 25 0814 UTC

WARNING: Geomagnetic Sudden Impulse expected
Valid From: 2023 Nov 25 0824 UTC
Valid To: 2023 Nov 25 0854 UTC
IP Shock Passage Observed: 2023 Nov 25 0754 UTC

NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation

04:23 UTC

Space Weather Message Code: WARK04
Serial Number: 4512
Issue Time: 2023 Nov 25 0423 UTC

WARNING: Geomagnetic K-index of 4 expected
Valid From: 2023 Nov 25 0422 UTC
Valid To: 2023 Nov 25 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.

sexta-feira, 24 novembro 2023

20:56 UTC

Space Weather Message Code: WATA20
Serial Number: 979
Issue Time: 2023 Nov 24 2056 UTC

WATCH: Geomagnetic Storm Category G1 Predicted

Highest Storm Level Predicted by Day:
Nov 25: None (Below G1) Nov 26: G1 (Minor) Nov 27: 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 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.

quarta-feira, 22 novembro 2023

23:56 UTC

Space Weather Message Code: WARK04
Serial Number: 4511
Issue Time: 2023 Nov 22 2356 UTC

EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 4510
Valid From: 2023 Nov 21 0635 UTC
Now Valid Until: 2023 Nov 23 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.

11:48 UTC

Space Weather Message Code: WARK05
Serial Number: 1836
Issue Time: 2023 Nov 22 1148 UTC

EXTENDED WARNING: Geomagnetic K-index of 5 expected
Extension to Serial Number: 1835
Valid From: 2023 Nov 22 0448 UTC
Now Valid Until: 2023 Nov 22 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.

11:47 UTC

Space Weather Message Code: WARK04
Serial Number: 4510
Issue Time: 2023 Nov 22 1147 UTC

EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 4509
Valid From: 2023 Nov 21 0635 UTC
Now Valid Until: 2023 Nov 22 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.

08:26 UTC

Space Weather Message Code: ALTK05
Serial Number: 1532
Issue Time: 2023 Nov 22 0826 UTC

ALERT: Geomagnetic K-index of 5
Threshold Reached: 2023 Nov 22 0807 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.

06:01 UTC

Space Weather Message Code: ALTK05
Serial Number: 1531
Issue Time: 2023 Nov 22 0601 UTC

ALERT: Geomagnetic K-index of 5
Threshold Reached: 2023 Nov 22 0550 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.

04:49 UTC

Space Weather Message Code: WARK05
Serial Number: 1835
Issue Time: 2023 Nov 22 0449 UTC

WARNING: Geomagnetic K-index of 5 expected
Valid From: 2023 Nov 22 0448 UTC
Valid To: 2023 Nov 22 1200 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.

01:53 UTC

Space Weather Message Code: WARK04
Serial Number: 4509
Issue Time: 2023 Nov 22 0153 UTC

EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 4508
Valid From: 2023 Nov 21 0635 UTC
Now Valid Until: 2023 Nov 22 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.

terça-feira, 21 novembro 2023

16:58 UTC

Space Weather Message Code: WARK04
Serial Number: 4508
Issue Time: 2023 Nov 21 1658 UTC

EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 4507
Valid From: 2023 Nov 21 0635 UTC
Now Valid Until: 2023 Nov 22 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.

11:54 UTC

Space Weather Message Code: WARK04
Serial Number: 4507
Issue Time: 2023 Nov 21 1154 UTC

EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 4506
Valid From: 2023 Nov 21 0635 UTC
Now Valid Until: 2023 Nov 21 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.

08:52 UTC

Space Weather Message Code: WARK05
Serial Number: 1834
Issue Time: 2023 Nov 21 0852 UTC

WARNING: Geomagnetic K-index of 5 expected
Valid From: 2023 Nov 21 0851 UTC
Valid To: 2023 Nov 21 1200 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.

08:40 UTC

Space Weather Message Code: ALTK04
Serial Number: 2414
Issue Time: 2023 Nov 21 0840 UTC

ALERT: Geomagnetic K-index of 4
Threshold Reached: 2023 Nov 21 0824 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.

06:35 UTC

Space Weather Message Code: WARK04
Serial Number: 4506
Issue Time: 2023 Nov 21 0635 UTC

WARNING: Geomagnetic K-index of 4 expected
Valid From: 2023 Nov 21 0635 UTC
Valid To: 2023 Nov 21 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.

segunda-feira, 20 novembro 2023

17:11 UTC

Space Weather Message Code: WATA20
Serial Number: 978
Issue Time: 2023 Nov 20 1711 UTC

CANCEL WATCH: Geomagnetic Storm Category G1 Predicted
Cancel Serial Number: 977
Original Issue Time: 2023 Nov 17 1654 UTC

Comment: The solar wind environment is not likely to drive G1 geomagnetic storm levels.

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.

sexta-feira, 17 novembro 2023

16:54 UTC

Space Weather Message Code: WATA20
Serial Number: 977
Issue Time: 2023 Nov 17 1654 UTC

WATCH: Geomagnetic Storm Category G1 Predicted

Highest Storm Level Predicted by Day:
Nov 18: None (Below G1) Nov 19: G1 (Minor) Nov 20: 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.

quinta-feira, 16 novembro 2023

17:43 UTC

Space Weather Message Code: WATA20
Serial Number: 976
Issue Time: 2023 Nov 16 1743 UTC

WATCH: Geomagnetic Storm Category G1 Predicted

Highest Storm Level Predicted by Day:
Nov 17: None (Below G1) Nov 18: None (Below G1) Nov 19: 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.

quarta-feira, 15 novembro 2023

20:13 UTC

Space Weather Message Code: WARK04
Serial Number: 4505
Issue Time: 2023 Nov 15 2013 UTC

EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 4504
Valid From: 2023 Nov 15 1349 UTC
Now Valid Until: 2023 Nov 16 0300 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.

13:50 UTC

Space Weather Message Code: WARK04
Serial Number: 4504
Issue Time: 2023 Nov 15 1350 UTC

WARNING: Geomagnetic K-index of 4 expected
Valid From: 2023 Nov 15 1349 UTC
Valid To: 2023 Nov 15 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.

segunda-feira, 13 novembro 2023

01:23 UTC

Space Weather Message Code: ALTK05
Serial Number: 1530
Issue Time: 2023 Nov 13 0123 UTC

ALERT: Geomagnetic K-index of 5
Threshold Reached: 2023 Nov 13 0123 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.

01:02 UTC

Space Weather Message Code: WARK05
Serial Number: 1833
Issue Time: 2023 Nov 13 0102 UTC

WARNING: Geomagnetic K-index of 5 expected
Valid From: 2023 Nov 13 0102 UTC
Valid To: 2023 Nov 13 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.

domingo, 12 novembro 2023

23:38 UTC

Space Weather Message Code: WARK04
Serial Number: 4503
Issue Time: 2023 Nov 12 2338 UTC

EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 4502
Valid From: 2023 Nov 12 0815 UTC
Now Valid Until: 2023 Nov 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 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.

08:20 UTC

Space Weather Message Code: ALTK04
Serial Number: 2413
Issue Time: 2023 Nov 12 0820 UTC

ALERT: Geomagnetic K-index of 4
Threshold Reached: 2023 Nov 12 0820 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.

08:14 UTC

Space Weather Message Code: WARK04
Serial Number: 4502
Issue Time: 2023 Nov 12 0814 UTC

WARNING: Geomagnetic K-index of 4 expected
Valid From: 2023 Nov 12 0815 UTC
Valid To: 2023 Nov 12 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.

05:00 UTC

Space Weather Message Code: ALTEF3
Serial Number: 3386
Issue Time: 2023 Nov 12 0500 UTC

CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Continuation of Serial Number: 3385
Begin Time: 2023 Nov 07 1600 UTC
Yesterday Maximum 2MeV Flux: 4373 pfu

NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation

Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems.

sábado, 11 novembro 2023

06:47 UTC

Space Weather Message Code: ALTEF3
Serial Number: 3385
Issue Time: 2023 Nov 11 0647 UTC

CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Continuation of Serial Number: 3384
Begin Time: 2023 Nov 07 1600 UTC
Yesterday Maximum 2MeV Flux: 3914 pfu

NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation

Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems.

sexta-feira, 10 novembro 2023

07:41 UTC

Space Weather Message Code: ALTEF3
Serial Number: 3384
Issue Time: 2023 Nov 10 0741 UTC

CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Continuation of Serial Number: 3383
Begin Time: 2023 Nov 07 1600 UTC
Yesterday Maximum 2MeV Flux: 2556 pfu

NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation

Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems.

06:00 UTC

Space Weather Message Code: ALTK04
Serial Number: 2412
Issue Time: 2023 Nov 10 0600 UTC

ALERT: Geomagnetic K-index of 4
Threshold Reached: 2023 Nov 10 0559 UTC
Synoptic Period: 0300-0600 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.

04:08 UTC

Space Weather Message Code: WARK04
Serial Number: 4501
Issue Time: 2023 Nov 10 0408 UTC

WARNING: Geomagnetic K-index of 4 expected
Valid From: 2023 Nov 10 0408 UTC
Valid To: 2023 Nov 10 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.

quinta-feira, 9 novembro 2023

21:32 UTC

Space Weather Message Code: WATA30
Serial Number: 224
Issue Time: 2023 Nov 09 2132 UTC

WATCH: Geomagnetic Storm Category G2 Predicted

Highest Storm Level Predicted by Day:
Nov 10: None (Below G1) Nov 11: G2 (Moderate) Nov 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.

11:31 UTC

Space Weather Message Code: ALTEF3
Serial Number: 3383
Issue Time: 2023 Nov 09 1131 UTC

CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Continuation of Serial Number: 3382
Begin Time: 2023 Nov 07 1600 UTC
Yesterday Maximum 2MeV Flux: 1233 pfu

NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation

Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems.

06:26 UTC

Space Weather Message Code: WARK04
Serial Number: 4500
Issue Time: 2023 Nov 09 0626 UTC

WARNING: Geomagnetic K-index of 4 expected
Valid From: 2023 Nov 09 0626 UTC
Valid To: 2023 Nov 09 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.

quarta-feira, 8 novembro 2023

19:47 UTC

Space Weather Message Code: WARK05
Serial Number: 1832
Issue Time: 2023 Nov 08 1947 UTC

WARNING: Geomagnetic K-index of 5 expected
Valid From: 2023 Nov 08 1945 UTC
Valid To: 2023 Nov 08 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.

19:35 UTC

Space Weather Message Code: ALTK04
Serial Number: 2411
Issue Time: 2023 Nov 08 1935 UTC

ALERT: Geomagnetic K-index of 4
Threshold Reached: 2023 Nov 08 1935 UTC
Synoptic Period: 1800-2100 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.

19:29 UTC

Space Weather Message Code: WARK04
Serial Number: 4499
Issue Time: 2023 Nov 08 1929 UTC

WARNING: Geomagnetic K-index of 4 expected
Valid From: 2023 Nov 08 1927 UTC
Valid To: 2023 Nov 09 0300 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.

13:52 UTC

Space Weather Message Code: ALTEF3
Serial Number: 3382
Issue Time: 2023 Nov 08 1352 UTC

CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Continuation of Serial Number: 3381
Begin Time: 2023 Nov 07 1600 UTC
Yesterday Maximum 2MeV Flux: 1524 pfu

NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation

Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems.

11:55 UTC

Space Weather Message Code: WARK04
Serial Number: 4498
Issue Time: 2023 Nov 08 1155 UTC

EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 4497
Valid From: 2023 Nov 08 0359 UTC
Now Valid Until: 2023 Nov 08 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.

04:24 UTC

Space Weather Message Code: ALTK04
Serial Number: 2410
Issue Time: 2023 Nov 08 0424 UTC

ALERT: Geomagnetic K-index of 4
Threshold Reached: 2023 Nov 08 0422 UTC
Synoptic Period: 0300-0600 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.

03:59 UTC

Space Weather Message Code: WARK04
Serial Number: 4497
Issue Time: 2023 Nov 08 0359 UTC

WARNING: Geomagnetic K-index of 4 expected
Valid From: 2023 Nov 08 0359 UTC
Valid To: 2023 Nov 08 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.

terça-feira, 7 novembro 2023

16:39 UTC

Space Weather Message Code: WATA30
Serial Number: 223
Issue Time: 2023 Nov 07 1639 UTC

CANCEL WATCH: Geomagnetic Storm Category G2 Predicted
Cancel Serial Number: 222
Original Issue Time: 2023 Nov 06 2024 UTC

Comment: Current geomagnetic conditions do not warrant 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 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.

16:24 UTC

Space Weather Message Code: ALTEF3
Serial Number: 3381
Issue Time: 2023 Nov 07 1624 UTC

ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Threshold Reached: 2023 Nov 07 1600 UTC
Station: GOES16


NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation

Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems.

02:30 UTC

Space Weather Message Code: ALTK05
Serial Number: 1529
Issue Time: 2023 Nov 07 0230 UTC

ALERT: Geomagnetic K-index of 5
Threshold Reached: 2023 Nov 07 0226 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.

00:07 UTC

Space Weather Message Code: ALTK05
Serial Number: 1528
Issue Time: 2023 Nov 07 0007 UTC

ALERT: Geomagnetic K-index of 5
Threshold Reached: 2023 Nov 06 2359 UTC
Synoptic Period: 2100-0000 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.