NOAA SWPC Avvisi, Osservazioni e Avvertenze

Il National Oceanic and Atmospheric Administration Space Weather Prediction Center (NOAA SWPC) è l'agenzia governativa ufficiale meteorologica spaziale dagli Stati Uniti che fornisce allarmi, allerte e avvertenze per i disturbi atmosferici. Di seguito troverete gli avvisi più recenti sugli eventi meteorologici, gli allarmi e gli avvisi emessi dal NOAA SWPC.

giovedì, 10 ottobre 2019

08:39 UTC

Space Weather Message Code: WARK04
Serial Number: 3680
Issue Time: 2019 Oct 10 0839 UTC

EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 3679
Valid From: 2019 Oct 10 0532 UTC
Now Valid Until: 2019 Oct 10 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.

05:47 UTC

Space Weather Message Code: ALTK04
Serial Number: 2133
Issue Time: 2019 Oct 10 0547 UTC

ALERT: Geomagnetic K-index of 4
Threshold Reached: 2019 Oct 10 0547 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.

05:32 UTC

Space Weather Message Code: WARK04
Serial Number: 3679
Issue Time: 2019 Oct 10 0532 UTC

WARNING: Geomagnetic K-index of 4 expected
Valid From: 2019 Oct 10 0532 UTC
Valid To: 2019 Oct 10 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.

mercoledì, 9 ottobre 2019

12:02 UTC

Space Weather Message Code: ALTK04
Serial Number: 2132
Issue Time: 2019 Oct 09 1202 UTC

ALERT: Geomagnetic K-index of 4
Threshold Reached: 2019 Oct 09 1200 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.

10:13 UTC

Space Weather Message Code: WARK04
Serial Number: 3678
Issue Time: 2019 Oct 09 1013 UTC

WARNING: Geomagnetic K-index of 4 expected
Valid From: 2019 Oct 09 1013 UTC
Valid To: 2019 Oct 09 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.

lunedì, 7 ottobre 2019

12:31 UTC

Space Weather Message Code: ALTEF3
Serial Number: 2998
Issue Time: 2019 Oct 07 1231 UTC

CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Continuation of Serial Number: 2997
Begin Time: 2019 Sep 28 1310 UTC
Yesterday Maximum 2MeV Flux: 1690 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.

domenica, 6 ottobre 2019

13:22 UTC

Space Weather Message Code: ALTEF3
Serial Number: 2997
Issue Time: 2019 Oct 06 1322 UTC

CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Continuation of Serial Number: 2996
Begin Time: 2019 Sep 28 1310 UTC
Yesterday Maximum 2MeV Flux: 3342 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.

sabato, 5 ottobre 2019

13:03 UTC

Space Weather Message Code: ALTEF3
Serial Number: 2996
Issue Time: 2019 Oct 05 1303 UTC

CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Continuation of Serial Number: 2995
Begin Time: 2019 Sep 28 1310 UTC
Yesterday Maximum 2MeV Flux: 5994 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.

13:02 UTC

Space Weather Message Code: ALTEF3
Serial Number: 2996
Issue Time: 2019 Oct 05 1302 UTC

CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Continuation of Serial Number: 2995
Begin Time:
Yesterday Maximum 2MeV Flux: 5994 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.

venerdì, 4 ottobre 2019

16:29 UTC

Space Weather Message Code: ALTEF3
Serial Number: 2995
Issue Time: 2019 Oct 04 1629 UTC

CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Continuation of Serial Number: 2994
Begin Time: 2019 Sep 28 1310 UTC
Yesterday Maximum 2MeV Flux: 6014 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.

giovedì, 3 ottobre 2019

08:07 UTC

Space Weather Message Code: ALTEF3
Serial Number: 2994
Issue Time: 2019 Oct 03 0807 UTC

CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Continuation of Serial Number: 2993
Begin Time: 2019 Sep 28 1310 UTC
Yesterday Maximum 2MeV Flux: 3930 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.

mercoledì, 2 ottobre 2019

12:49 UTC

Space Weather Message Code: ALTEF3
Serial Number: 2993
Issue Time: 2019 Oct 02 1249 UTC

CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Continuation of Serial Number: 2992
Begin Time: 2019 Sep 28 1310 UTC
Yesterday Maximum 2MeV Flux: 2055 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.

martedì, 1 ottobre 2019

12:31 UTC

Space Weather Message Code: ALTEF3
Serial Number: 2992
Issue Time: 2019 Oct 01 1231 UTC

CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Continuation of Serial Number: 2991
Begin Time: 2019 Sep 28 1310 UTC
Yesterday Maximum 2MeV Flux: 9178 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.

08:00 UTC

Space Weather Message Code: WARK04
Serial Number: 3677
Issue Time: 2019 Oct 01 0800 UTC

EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 3676
Valid From: 2019 Oct 01 0257 UTC
Now Valid Until: 2019 Oct 01 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.

03:01 UTC

Space Weather Message Code: ALTK04
Serial Number: 2131
Issue Time: 2019 Oct 01 0301 UTC

ALERT: Geomagnetic K-index of 4
Threshold Reached: 2019 Oct 01 0259 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.

02:58 UTC

Space Weather Message Code: WARK04
Serial Number: 3676
Issue Time: 2019 Oct 01 0258 UTC

WARNING: Geomagnetic K-index of 4 expected
Valid From: 2019 Oct 01 0257 UTC
Valid To: 2019 Oct 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.

lunedì, 30 settembre 2019

07:24 UTC

Space Weather Message Code: ALTEF3
Serial Number: 2991
Issue Time: 2019 Sep 30 0724 UTC

CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Continuation of Serial Number: 2990
Begin Time: 2019 Sep 28 1310 UTC
Yesterday Maximum 2MeV Flux: 49285 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.

05:39 UTC

Space Weather Message Code: WARK04
Serial Number: 3675
Issue Time: 2019 Sep 30 0539 UTC

WARNING: Geomagnetic K-index of 4 expected
Valid From: 2019 Sep 30 0538 UTC
Valid To: 2019 Sep 30 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.

00:02 UTC

Space Weather Message Code: ALTK04
Serial Number: 2129
Issue Time: 2019 Sep 30 0002 UTC

ALERT: Geomagnetic K-index of 4
Threshold Reached: 2019 Sep 29 2359 UTC
Synoptic Period: 2100-2359 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.

domenica, 29 settembre 2019

19:52 UTC

Space Weather Message Code: WARK04
Serial Number: 3674
Issue Time: 2019 Sep 29 1952 UTC

WARNING: Geomagnetic K-index of 4 expected
Valid From: 2019 Sep 29 1951 UTC
Valid To: 2019 Sep 29 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.

10:10 UTC

Space Weather Message Code: ALTEF3
Serial Number: 2990
Issue Time: 2019 Sep 29 1010 UTC

CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Continuation of Serial Number: 2989
Begin Time: 2019 Sep 28 1310 UTC
Yesterday Maximum 2MeV Flux: 19967 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.

sabato, 28 settembre 2019

19:51 UTC

Space Weather Message Code: WARK04
Serial Number: 3673
Issue Time: 2019 Sep 28 1951 UTC

EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 3672
Valid From: 2019 Sep 27 1000 UTC
Now Valid Until: 2019 Sep 29 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.

19:51 UTC

Space Weather Message Code: WARK05
Serial Number: 1538
Issue Time: 2019 Sep 28 1951 UTC

EXTENDED WARNING: Geomagnetic K-index of 5 expected
Extension to Serial Number: 1537
Valid From: 2019 Sep 27 1630 UTC
Now Valid Until: 2019 Sep 29 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.

13:30 UTC

Space Weather Message Code: ALTEF3
Serial Number: 2989
Issue Time: 2019 Sep 28 1330 UTC

ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Threshold Reached: 2019 Sep 28 1310 UTC
Station: GOES14


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.

12:01 UTC

Space Weather Message Code: ALTK05
Serial Number: 1288
Issue Time: 2019 Sep 28 1201 UTC

ALERT: Geomagnetic K-index of 5
Threshold Reached: 2019 Sep 28 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.

08:47 UTC

Space Weather Message Code: ALTK05
Serial Number: 1287
Issue Time: 2019 Sep 28 0847 UTC

ALERT: Geomagnetic K-index of 5
Threshold Reached: 2019 Sep 28 0845 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.

08:46 UTC

Space Weather Message Code: WARK05
Serial Number: 1537
Issue Time: 2019 Sep 28 0846 UTC

EXTENDED WARNING: Geomagnetic K-index of 5 expected
Extension to Serial Number: 1536
Valid From: 2019 Sep 27 1630 UTC
Now Valid Until: 2019 Sep 28 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.

04:45 UTC

Space Weather Message Code: ALTK05
Serial Number: 1286
Issue Time: 2019 Sep 28 0445 UTC

ALERT: Geomagnetic K-index of 5
Threshold Reached: 2019 Sep 27 0439 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.

venerdì, 27 settembre 2019

22:36 UTC

Space Weather Message Code: ALTK05
Serial Number: 1285
Issue Time: 2019 Sep 27 2236 UTC

ALERT: Geomagnetic K-index of 5
Threshold Reached: 2019 Sep 27 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.

20:22 UTC

Space Weather Message Code: ALTK05
Serial Number: 1284
Issue Time: 2019 Sep 27 2022 UTC

ALERT: Geomagnetic K-index of 5
Threshold Reached: 2019 Sep 27 2021 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.

20:22 UTC

Space Weather Message Code: WARK06
Serial Number: 435
Issue Time: 2019 Sep 27 2022 UTC

WARNING: Geomagnetic K-Index of 6 expected
Valid From: 2019 Sep 27 2022 UTC
Valid To: 2019 Sep 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.

16:30 UTC

Space Weather Message Code: WARK05
Serial Number: 1536
Issue Time: 2019 Sep 27 1630 UTC

WARNING: Geomagnetic K-index of 5 expected
Valid From: 2019 Sep 27 1630 UTC
Valid To: 2019 Sep 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.

16:30 UTC

Space Weather Message Code: ALTK04
Serial Number: 2128
Issue Time: 2019 Sep 27 1630 UTC

ALERT: Geomagnetic K-index of 4
Threshold Reached: 2019 Sep 27 1628 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.

09:50 UTC

Space Weather Message Code: WARK04
Serial Number: 3672
Issue Time: 2019 Sep 27 0950 UTC

WARNING: Geomagnetic K-index of 4 expected
Valid From: 2019 Sep 27 1000 UTC
Valid To: 2019 Sep 28 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.

giovedì, 26 settembre 2019

17:11 UTC

Space Weather Message Code: WATA30
Serial Number: 183
Issue Time: 2019 Sep 26 1711 UTC

WATCH: Geomagnetic Storm Category G2 Predicted

Highest Storm Level Predicted by Day:
Sep 27: G1 (Minor) Sep 28: G2 (Moderate) Sep 29: 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.

17:01 UTC

Space Weather Message Code: WATA30
Serial Number: 182
Issue Time: 2019 Sep 26 1701 UTC

WATCH: Geomagnetic Storm Category G2 Predicted

Highest Storm Level Predicted by Day:
Sep 27: None (Below G1) Sep 28: G2 (Moderate) Sep 29: 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.

mercoledì, 25 settembre 2019

18:56 UTC

Space Weather Message Code: WATA30
Serial Number: 181
Issue Time: 2019 Sep 25 1856 UTC

WATCH: Geomagnetic Storm Category G2 Predicted

Highest Storm Level Predicted by Day:
Sep 26: None (Below G1) Sep 27: G1 (Minor) Sep 28: 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.

martedì, 24 settembre 2019

22:56 UTC

Space Weather Message Code: WARK04
Serial Number: 3671
Issue Time: 2019 Sep 24 2256 UTC

EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 3670
Valid From: 2019 Sep 24 1326 UTC
Now Valid Until: 2019 Sep 25 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.

20:48 UTC

Space Weather Message Code: WATA20
Serial Number: 863
Issue Time: 2019 Sep 24 2048 UTC

WATCH: Geomagnetic Storm Category G1 Predicted

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

18:05 UTC

Space Weather Message Code: ALTK04
Serial Number: 2127
Issue Time: 2019 Sep 24 1805 UTC

ALERT: Geomagnetic K-index of 4
Threshold Reached: 2019 Sep 24 1759 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.

13:28 UTC

Space Weather Message Code: WARK04
Serial Number: 3670
Issue Time: 2019 Sep 24 1328 UTC

WARNING: Geomagnetic K-index of 4 expected
Valid From: 2019 Sep 24 1326 UTC
Valid To: 2019 Sep 24 2300 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.

03:17 UTC

Space Weather Message Code: WARK04
Serial Number: 3669
Issue Time: 2019 Sep 24 0317 UTC

WARNING: Geomagnetic K-index of 4 expected
Valid From: 2019 Sep 24 0317 UTC
Valid To: 2019 Sep 24 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.

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