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.

mercoledì, 17 ottobre 2018

18:07 UTC

Space Weather Message Code: WATA20
Serial Number: 841
Issue Time: 2018 Oct 17 1807 UTC

WATCH: Geomagnetic Storm Category G1 Predicted

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

16:28 UTC

Space Weather Message Code: ALTEF3
Serial Number: 2864
Issue Time: 2018 Oct 17 1628 UTC

CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Continuation of Serial Number: 2863
Begin Time: 2018 Oct 16 1610 UTC
Yesterday Maximum 2MeV Flux: 1323 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, 16 ottobre 2018

16:12 UTC

Space Weather Message Code: ALTEF3
Serial Number: 2863
Issue Time: 2018 Oct 16 1612 UTC

ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Threshold Reached: 2018 Oct 16 1610 UTC
Station: GOES15


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.

lunedì, 15 ottobre 2018

00:56 UTC

Space Weather Message Code: WARK04
Serial Number: 3553
Issue Time: 2018 Oct 15 0056 UTC

WARNING: Geomagnetic K-index of 4 expected
Valid From: 2018 Oct 15 0055 UTC
Valid To: 2018 Oct 15 0900 UTC
Warning Condition: Onset

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

Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.

sabato, 13 ottobre 2018

23:47 UTC

Space Weather Message Code: WARK04
Serial Number: 3552
Issue Time: 2018 Oct 13 2347 UTC

EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 3551
Valid From: 2018 Oct 13 1655 UTC
Now Valid Until: 2018 Oct 14 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.

23:47 UTC

Space Weather Message Code: WARK05
Serial Number: 1502
Issue Time: 2018 Oct 13 2347 UTC

EXTENDED WARNING: Geomagnetic K-index of 5 expected
Extension to Serial Number: 1501
Valid From: 2018 Oct 13 1716 UTC
Now Valid Until: 2018 Oct 14 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.

18:28 UTC

Space Weather Message Code: WATA20
Serial Number: 840
Issue Time: 2018 Oct 13 1828 UTC

WATCH: Geomagnetic Storm Category G1 Predicted

Highest Storm Level Predicted by Day:
Oct 14: G1 (Minor) Oct 15: None (Below G1) Oct 16: 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.

17:57 UTC

Space Weather Message Code: ALTK05
Serial Number: 1248
Issue Time: 2018 Oct 13 1757 UTC

ALERT: Geomagnetic K-index of 5
Threshold Reached: 2018 Oct 13 1756 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.

17:16 UTC

Space Weather Message Code: WARK05
Serial Number: 1501
Issue Time: 2018 Oct 13 1716 UTC

WARNING: Geomagnetic K-index of 5 expected
Valid From: 2018 Oct 13 1716 UTC
Valid To: 2018 Oct 13 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.

17:10 UTC

Space Weather Message Code: ALTK04
Serial Number: 2085
Issue Time: 2018 Oct 13 1710 UTC

ALERT: Geomagnetic K-index of 4
Threshold Reached: 2018 Oct 13 1709 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.

16:55 UTC

Space Weather Message Code: WARK04
Serial Number: 3551
Issue Time: 2018 Oct 13 1655 UTC

WARNING: Geomagnetic K-index of 4 expected
Valid From: 2018 Oct 13 1655 UTC
Valid To: 2018 Oct 13 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.

09:00 UTC

Space Weather Message Code: ALTEF3
Serial Number: 2862
Issue Time: 2018 Oct 13 0900 UTC

CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Continuation of Serial Number: 2861
Begin Time: 2018 Oct 08 1345 UTC
Yesterday Maximum 2MeV Flux: 36881 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, 12 ottobre 2018

09:00 UTC

Space Weather Message Code: ALTEF3
Serial Number: 2861
Issue Time: 2018 Oct 12 0900 UTC

CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Continuation of Serial Number: 2860
Begin Time: 2018 Oct 08 1345 UTC
Yesterday Maximum 2MeV Flux: 35911 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.

02:39 UTC

Space Weather Message Code: ALTTP2
Serial Number: 1068
Issue Time: 2018 Oct 12 0239 UTC

ALERT: Type II Radio Emission
Begin Time: 2018 Oct 12 0152 UTC
Estimated Velocity: 864 km/s

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

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.

giovedì, 11 ottobre 2018

08:59 UTC

Space Weather Message Code: ALTEF3
Serial Number: 2860
Issue Time: 2018 Oct 11 0859 UTC

CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Continuation of Serial Number: 2859
Begin Time: 2018 Oct 08 1345 UTC
Yesterday Maximum 2MeV Flux: 20705 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.

01:38 UTC

Space Weather Message Code: WARK04
Serial Number: 3550
Issue Time: 2018 Oct 11 0138 UTC

WARNING: Geomagnetic K-index of 4 expected
Valid From: 2018 Oct 11 0140 UTC
Valid To: 2018 Oct 11 0600 UTC
Warning Condition: Onset

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

Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.

mercoledì, 10 ottobre 2018

20:32 UTC

Space Weather Message Code: ALTK05
Serial Number: 1247
Issue Time: 2018 Oct 10 2032 UTC

ALERT: Geomagnetic K-index of 5
Threshold Reached: 2018 Oct 10 2022 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.

20:23 UTC

Space Weather Message Code: WARK05
Serial Number: 1500
Issue Time: 2018 Oct 10 2023 UTC

WARNING: Geomagnetic K-index of 5 expected
Valid From: 2018 Oct 10 2022 UTC
Valid To: 2018 Oct 10 2300 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.

17:59 UTC

Space Weather Message Code: WARK04
Serial Number: 3549
Issue Time: 2018 Oct 10 1759 UTC

EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 3548
Valid From: 2018 Oct 10 1230 UTC
Now Valid Until: 2018 Oct 10 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.

13:43 UTC

Space Weather Message Code: ALTK04
Serial Number: 2084
Issue Time: 2018 Oct 10 1343 UTC

ALERT: Geomagnetic K-index of 4
Threshold Reached: 2018 Oct 10 1342 UTC
Synoptic Period: 1200-1500 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.

12:29 UTC

Space Weather Message Code: WARK04
Serial Number: 3548
Issue Time: 2018 Oct 10 1229 UTC

WARNING: Geomagnetic K-index of 4 expected
Valid From: 2018 Oct 10 1230 UTC
Valid To: 2018 Oct 10 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.

08:59 UTC

Space Weather Message Code: ALTEF3
Serial Number: 2859
Issue Time: 2018 Oct 10 0859 UTC

CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Continuation of Serial Number: 2858
Begin Time: 2018 Oct 08 1345 UTC
Yesterday Maximum 2MeV Flux: 39177 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.

03:02 UTC

Space Weather Message Code: ALTK04
Serial Number: 2083
Issue Time: 2018 Oct 10 0302 UTC

ALERT: Geomagnetic K-index of 4
Threshold Reached: 2018 Oct 10 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.

01:48 UTC

Space Weather Message Code: WARK04
Serial Number: 3547
Issue Time: 2018 Oct 10 0148 UTC

WARNING: Geomagnetic K-index of 4 expected
Valid From: 2018 Oct 10 0148 UTC
Valid To: 2018 Oct 10 0600 UTC
Warning Condition: Onset

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

Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.

martedì, 9 ottobre 2018

16:30 UTC

Space Weather Message Code: ALTK04
Serial Number: 2082
Issue Time: 2018 Oct 09 1630 UTC

ALERT: Geomagnetic K-index of 4
Threshold Reached: 2018 Oct 09 1630 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.

16:02 UTC

Space Weather Message Code: WARK04
Serial Number: 3546
Issue Time: 2018 Oct 09 1602 UTC

WARNING: Geomagnetic K-index of 4 expected
Valid From: 2018 Oct 09 1600 UTC
Valid To: 2018 Oct 09 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.

12:00 UTC

Space Weather Message Code: ALTK04
Serial Number: 2081
Issue Time: 2018 Oct 09 1200 UTC

ALERT: Geomagnetic K-index of 4
Threshold Reached: 2018 Oct 09 1159 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.

09:26 UTC

Space Weather Message Code: ALTEF3
Serial Number: 2858
Issue Time: 2018 Oct 09 0926 UTC

CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Continuation of Serial Number: 2857
Begin Time: 2018 Oct 08 1345 UTC
Yesterday Maximum 2MeV Flux: 10718 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.

07:30 UTC

Space Weather Message Code: WARK04
Serial Number: 3545
Issue Time: 2018 Oct 09 0730 UTC

WARNING: Geomagnetic K-index of 4 expected
Valid From: 2018 Oct 09 0730 UTC
Valid To: 2018 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, 8 ottobre 2018

13:48 UTC

Space Weather Message Code: ALTEF3
Serial Number: 2857
Issue Time: 2018 Oct 08 1348 UTC

ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Threshold Reached: 2018 Oct 08 1345 UTC
Station: GOES15


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.

08:56 UTC

Space Weather Message Code: WARK04
Serial Number: 3544
Issue Time: 2018 Oct 08 0856 UTC

EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 3543
Valid From: 2018 Oct 07 1100 UTC
Now Valid Until: 2018 Oct 08 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.

08:55 UTC

Space Weather Message Code: WARK05
Serial Number: 1499
Issue Time: 2018 Oct 08 0855 UTC

EXTENDED WARNING: Geomagnetic K-index of 5 expected
Extension to Serial Number: 1498
Valid From: 2018 Oct 07 1555 UTC
Now Valid Until: 2018 Oct 08 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.

00:04 UTC

Space Weather Message Code: ALTK05
Serial Number: 1246
Issue Time: 2018 Oct 08 0004 UTC

ALERT: Geomagnetic K-index of 5
Threshold Reached: 2018 Oct 07 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.

domenica, 7 ottobre 2018

20:43 UTC

Space Weather Message Code: ALTK05
Serial Number: 1245
Issue Time: 2018 Oct 07 2043 UTC

ALERT: Geomagnetic K-index of 5
Threshold Reached: 2018 Oct 07 2042 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.

16:45 UTC

Space Weather Message Code: WARK06
Serial Number: 425
Issue Time: 2018 Oct 07 1645 UTC

WARNING: Geomagnetic K-Index of 6 expected
Valid From: 2018 Oct 07 1645 UTC
Valid To: 2018 Oct 08 0600 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.

16:45 UTC

Space Weather Message Code: WARK05
Serial Number: 1498
Issue Time: 2018 Oct 07 1645 UTC

EXTENDED WARNING: Geomagnetic K-index of 5 expected
Extension to Serial Number: 1497
Valid From: 2018 Oct 07 1555 UTC
Now Valid Until: 2018 Oct 08 0900 UTC
Warning Condition: Persistence

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

Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.

16:45 UTC

Space Weather Message Code: WARK04
Serial Number: 3543
Issue Time: 2018 Oct 07 1645 UTC

EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 3542
Valid From: 2018 Oct 07 1100 UTC
Now Valid Until: 2018 Oct 08 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.

16:22 UTC

Space Weather Message Code: ALTK05
Serial Number: 1244
Issue Time: 2018 Oct 07 1622 UTC

ALERT: Geomagnetic K-index of 5
Threshold Reached: 2018 Oct 07 1622 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.

15:55 UTC

Space Weather Message Code: WARK05
Serial Number: 1497
Issue Time: 2018 Oct 07 1555 UTC

WARNING: Geomagnetic K-index of 5 expected
Valid From: 2018 Oct 07 1555 UTC
Valid To: 2018 Oct 07 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.

14:59 UTC

Space Weather Message Code: ALTK04
Serial Number: 2080
Issue Time: 2018 Oct 07 1459 UTC

ALERT: Geomagnetic K-index of 4
Threshold Reached: 2018 Oct 07 1459 UTC
Synoptic Period: 1200-1500 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.

10:55 UTC

Space Weather Message Code: WARK04
Serial Number: 3542
Issue Time: 2018 Oct 07 1055 UTC

WARNING: Geomagnetic K-index of 4 expected
Valid From: 2018 Oct 07 1100 UTC
Valid To: 2018 Oct 07 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.

venerdì, 5 ottobre 2018

19:21 UTC

Space Weather Message Code: WATA30
Serial Number: 176
Issue Time: 2018 Oct 05 1921 UTC

WATCH: Geomagnetic Storm Category G2 Predicted

Highest Storm Level Predicted by Day:
Oct 06: None (Below G1) Oct 07: G2 (Moderate) Oct 08: 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.

giovedì, 4 ottobre 2018

21:50 UTC

Space Weather Message Code: WATA20
Serial Number: 839
Issue Time: 2018 Oct 04 2150 UTC

WATCH: Geomagnetic Storm Category G1 Predicted

Highest Storm Level Predicted by Day:
Oct 05: None (Below G1) Oct 06: None (Below G1) Oct 07: 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.

martedì, 2 ottobre 2018

02:19 UTC

Space Weather Message Code: ALTK04
Serial Number: 2079
Issue Time: 2018 Oct 02 0219 UTC

ALERT: Geomagnetic K-index of 4
Threshold Reached: 2018 Oct 02 0219 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.

01:38 UTC

Space Weather Message Code: WARK04
Serial Number: 3541
Issue Time: 2018 Oct 02 0138 UTC

WARNING: Geomagnetic K-index of 4 expected
Valid From: 2018 Oct 02 0138 UTC
Valid To: 2018 Oct 02 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, 1 ottobre 2018

14:24 UTC

Space Weather Message Code: ALTK04
Serial Number: 2078
Issue Time: 2018 Oct 01 1424 UTC

ALERT: Geomagnetic K-index of 4
Threshold Reached: 2018 Oct 01 1424 UTC
Synoptic Period: 1200-1500 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.

14:18 UTC

Space Weather Message Code: WARK04
Serial Number: 3540
Issue Time: 2018 Oct 01 1418 UTC

WARNING: Geomagnetic K-index of 4 expected
Valid From: 2018 Oct 01 1419 UTC
Valid To: 2018 Oct 01 2000 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.

venerdì, 28 settembre 2018

18:20 UTC

Space Weather Message Code: ALTEF3
Serial Number: 2856
Issue Time: 2018 Sep 28 1820 UTC

CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Continuation of Serial Number: 2855
Begin Time: 2018 Sep 12 1730 UTC
Yesterday Maximum 2MeV Flux: 3457 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, 27 settembre 2018

14:51 UTC

Space Weather Message Code: ALTEF3
Serial Number: 2855
Issue Time: 2018 Sep 27 1451 UTC

CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Continuation of Serial Number: 2854
Begin Time: 2018 Sep 12 1730 UTC
Yesterday Maximum 2MeV Flux: 1574 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, 26 settembre 2018

14:56 UTC

Space Weather Message Code: ALTEF3
Serial Number: 2854
Issue Time: 2018 Sep 26 1456 UTC

CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Continuation of Serial Number: 2853
Begin Time: 2018 Sep 12 1730 UTC
Yesterday Maximum 2MeV Flux: 2766 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, 25 settembre 2018

15:56 UTC

Space Weather Message Code: ALTEF3
Serial Number: 2853
Issue Time: 2018 Sep 25 1556 UTC

CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Continuation of Serial Number: 2852
Begin Time: 2018 Sep 12 1730 UTC
Yesterday Maximum 2MeV Flux: 6202 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.

lunedì, 24 settembre 2018

13:16 UTC

Space Weather Message Code: ALTEF3
Serial Number: 2852
Issue Time: 2018 Sep 24 1316 UTC

CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Continuation of Serial Number: 2851
Begin Time: 2018 Sep 12 1730 UTC
Yesterday Maximum 2MeV Flux: 8045 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, 23 settembre 2018

09:42 UTC

Space Weather Message Code: ALTEF3
Serial Number: 2851
Issue Time: 2018 Sep 23 0942 UTC

CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Continuation of Serial Number: 2850
Begin Time: 2018 Sep 12 1730 UTC
Yesterday Maximum 2MeV Flux: 4753 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.

09:15 UTC

Space Weather Message Code: WATA20
Serial Number: 838
Issue Time: 2018 Sep 23 0915 UTC

CANCEL WATCH: Geomagnetic Storm Category G1 Predicted
Cancel Serial Number: 837
Original Issue Time: 2018 Sep 20 1543 UTC

Comment: Geomagnetic conditions no longer warrant this G1 Watch.

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

Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.

sabato, 22 settembre 2018

23:54 UTC

Space Weather Message Code: WARK04
Serial Number: 3539
Issue Time: 2018 Sep 22 2354 UTC

EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 3538
Valid From: 2018 Sep 21 2335 UTC
Now Valid Until: 2018 Sep 23 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.

15:51 UTC

Space Weather Message Code: ALTEF3
Serial Number: 2850
Issue Time: 2018 Sep 22 1551 UTC

CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Continuation of Serial Number: 2849
Begin Time: 2018 Sep 12 1730 UTC
Yesterday Maximum 2MeV Flux: 10633 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: 3538
Issue Time: 2018 Sep 22 1155 UTC

EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 3537
Valid From: 2018 Sep 21 2335 UTC
Now Valid Until: 2018 Sep 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.

02:45 UTC

Space Weather Message Code: ALTK05
Serial Number: 1243
Issue Time: 2018 Sep 22 0245 UTC

ALERT: Geomagnetic K-index of 5
Threshold Reached: 2018 Sep 22 0245 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.

00:01 UTC

Space Weather Message Code: ALTK05
Serial Number: 1242
Issue Time: 2018 Sep 22 0001 UTC

ALERT: Geomagnetic K-index of 5
Threshold Reached: 2018 Sep 21 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.

venerdì, 21 settembre 2018

23:56 UTC

Space Weather Message Code: WARK05
Serial Number: 1496
Issue Time: 2018 Sep 21 2356 UTC

WARNING: Geomagnetic K-index of 5 expected
Valid From: 2018 Sep 21 2355 UTC
Valid To: 2018 Sep 22 0900 UTC
Warning Condition: Onset
NOAA Scale: G1 - Minor

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

Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.

23:44 UTC

Space Weather Message Code: ALTK04
Serial Number: 2077
Issue Time: 2018 Sep 21 2344 UTC

ALERT: Geomagnetic K-index of 4
Threshold Reached: 2018 Sep 21 2345 UTC
Synoptic Period: 2100-2400 UTC

Active Warning: Yes

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

Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.

23:33 UTC

Space Weather Message Code: WARK04
Serial Number: 3537
Issue Time: 2018 Sep 21 2333 UTC

WARNING: Geomagnetic K-index of 4 expected
Valid From: 2018 Sep 21 2335 UTC
Valid To: 2018 Sep 22 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.

09:00 UTC

Space Weather Message Code: ALTEF3
Serial Number: 2849
Issue Time: 2018 Sep 21 0900 UTC

CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Continuation of Serial Number: 2848
Begin Time: 2018 Sep 12 1730 UTC
Yesterday Maximum 2MeV Flux: 8309 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, 20 settembre 2018

15:43 UTC

Space Weather Message Code: WATA20
Serial Number: 837
Issue Time: 2018 Sep 20 1543 UTC

WATCH: Geomagnetic Storm Category G1 Predicted

Highest Storm Level Predicted by Day:
Sep 21: None (Below G1) Sep 22: None (Below G1) Sep 23: 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.

09:00 UTC

Space Weather Message Code: ALTEF3
Serial Number: 2848
Issue Time: 2018 Sep 20 0900 UTC

CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Continuation of Serial Number: 2847
Begin Time: 2018 Sep 12 1730 UTC
Yesterday Maximum 2MeV Flux: 8688 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, 19 settembre 2018

09:01 UTC

Space Weather Message Code: ALTEF3
Serial Number: 2847
Issue Time: 2018 Sep 19 0901 UTC

CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Continuation of Serial Number: 2846
Begin Time: 2018 Sep 12 1730 UTC
Yesterday Maximum 2MeV Flux: 7837 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, 18 settembre 2018

10:36 UTC

Space Weather Message Code: ALTEF3
Serial Number: 2846
Issue Time: 2018 Sep 18 1036 UTC

CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Continuation of Serial Number: 2845
Begin Time: 2018 Sep 12 1730 UTC
Yesterday Maximum 2MeV Flux: 17212 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.

I dati attuali suggeriscono che al momento non è possibile vedere l'aurora alle medie latitudini

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