NOAA SWPC Alertes, surveillances et avertissements

Le Centre de prévision National Oceanic and Atmospheric Administration Space Weather (NOAA SWPC) est l'organisme gouvernemental de la météorologie spatiale officielle des États-Unis qui fournit des alertes pour les perturbations de la météo spatiale. Ci-dessous vous trouverez les dernières alertes météorologiques de l'espace émis par la NOAA SWPC.

jeudi 28 novembre 2019

15:05 UTC

Space Weather Message Code: ALTEF3
Serial Number: 3016
Issue Time: 2019 Nov 28 1505 UTC

CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Continuation of Serial Number: 3015
Begin Time: 2019 Nov 24 1515 UTC
Yesterday Maximum 2MeV Flux: 1758 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.

mercredi 27 novembre 2019

12:16 UTC

Space Weather Message Code: ALTEF3
Serial Number: 3015
Issue Time: 2019 Nov 27 1216 UTC

CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Continuation of Serial Number: 3014
Begin Time: 2019 Nov 24 1515 UTC
Yesterday Maximum 2MeV Flux: 2713 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.

mardi 26 novembre 2019

12:06 UTC

Space Weather Message Code: ALTEF3
Serial Number: 3014
Issue Time: 2019 Nov 26 1206 UTC

CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Continuation of Serial Number: 3013
Begin Time: 2019 Nov 24 1515 UTC
Yesterday Maximum 2MeV Flux: 2203 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.

lundi 25 novembre 2019

12:41 UTC

Space Weather Message Code: ALTEF3
Serial Number: 3013
Issue Time: 2019 Nov 25 1241 UTC

CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Continuation of Serial Number: 3012
Begin Time: 2019 Nov 24 1515 UTC
Yesterday Maximum 2MeV Flux: 1920 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.

dimanche 24 novembre 2019

15:29 UTC

Space Weather Message Code: ALTEF3
Serial Number: 3012
Issue Time: 2019 Nov 24 1529 UTC

ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Threshold Reached: 2019 Nov 24 1515 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.

samedi 23 novembre 2019

13:58 UTC

Space Weather Message Code: WARK04
Serial Number: 3694
Issue Time: 2019 Nov 23 1358 UTC

WARNING: Geomagnetic K-index of 4 expected
Valid From: 2019 Nov 23 1400 UTC
Valid To: 2019 Nov 23 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.

vendredi 22 novembre 2019

05:15 UTC

Space Weather Message Code: WARK04
Serial Number: 3693
Issue Time: 2019 Nov 22 0515 UTC

EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 3692
Valid From: 2019 Nov 21 1758 UTC
Now Valid Until: 2019 Nov 22 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.

jeudi 21 novembre 2019

22:47 UTC

Space Weather Message Code: ALTK04
Serial Number: 2138
Issue Time: 2019 Nov 21 2247 UTC

ALERT: Geomagnetic K-index of 4
Threshold Reached: 2019 Nov 21 2244 UTC
Synoptic Period: 2100-2400 UTC

Active Warning: Yes

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

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

22:46 UTC

Space Weather Message Code: ALTK04
Serial Number: 2137
Issue Time: 2019 Nov 21 2246 UTC

CANCEL ALERT: Geomagnetic K-index of 4
Cancel Serial Number: 2136
Original Issue Time: 2019 Nov 21 2244 UTC

Comment: Issued using local time. Will re-issue with UTC.

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

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

22:44 UTC

Space Weather Message Code: ALTK04
Serial Number: 2136
Issue Time: 2019 Nov 21 2244 UTC

ALERT: Geomagnetic K-index of 4
Threshold Reached: 2019 Nov 21 1544 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.

17:58 UTC

Space Weather Message Code: WARK04
Serial Number: 3692
Issue Time: 2019 Nov 21 1758 UTC

WARNING: Geomagnetic K-index of 4 expected
Valid From: 2019 Nov 21 1758 UTC
Valid To: 2019 Nov 22 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.

lundi 18 novembre 2019

21:12 UTC

Space Weather Message Code: WATA20
Serial Number: 866
Issue Time: 2019 Nov 18 2112 UTC

WATCH: Geomagnetic Storm Category G1 Predicted

Highest Storm Level Predicted by Day:
Nov 19: None (Below G1) Nov 20: None (Below G1) Nov 21: 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.

lundi 11 novembre 2019

09:59 UTC

Space Weather Message Code: WARK04
Serial Number: 3691
Issue Time: 2019 Nov 11 0959 UTC

WARNING: Geomagnetic K-index of 4 expected
Valid From: 2019 Nov 11 1000 UTC
Valid To: 2019 Nov 11 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.

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