NOAA SWPC Alerts, Watches and Warnings

The National Oceanic and Atmospheric Administration Space Weather Prediction Center (NOAA SWPC) is the official space weather government agency from the United States that provides alerts, watches and warning for space weather disturbances. Below you will find the latest space weather alerts, watches and warnings issued by the NOAA SWPC.

Saturday, 4 April 2020

00:01 UTC

Space Weather Message Code: ALTK04
Serial Number: 2153
Issue Time: 2020 Apr 04 0001 UTC

ALERT: Geomagnetic K-index of 4
Threshold Reached: 2020 Apr 03 2359 UTC
Synoptic Period: 2100-0000 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.

Friday, 3 April 2020

22:46 UTC

Space Weather Message Code: WARK04
Serial Number: 3721
Issue Time: 2020 Apr 03 2246 UTC

WARNING: Geomagnetic K-index of 4 expected
Valid From: 2020 Apr 03 2245 UTC
Valid To: 2020 Apr 04 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.

16:50 UTC

Space Weather Message Code: ALTEF3
Serial Number: 3032
Issue Time: 2020 Apr 03 1650 UTC

CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Continuation of Serial Number: 3031
Begin Time: 2020 Apr 02 1415 UTC
Yesterday Maximum 2MeV Flux: 1692 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.

Thursday, 2 April 2020

14:41 UTC

Space Weather Message Code: ALTEF3
Serial Number: 3031
Issue Time: 2020 Apr 02 1441 UTC

ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Threshold Reached: 2020 Apr 02 1415 UTC
Station: GOES-16


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.

Tuesday, 31 March 2020

17:55 UTC

Space Weather Message Code: WARK04
Serial Number: 3720
Issue Time: 2020 Mar 31 1755 UTC

EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 3719
Valid From: 2020 Mar 30 1745 UTC
Now Valid Until: 2020 Apr 01 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.

07:26 UTC

Space Weather Message Code: WARK04
Serial Number: 3719
Issue Time: 2020 Mar 31 0726 UTC

EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 3718
Valid From: 2020 Mar 30 1745 UTC
Now Valid Until: 2020 Mar 31 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.

00:14 UTC

Space Weather Message Code: WARK04
Serial Number: 3718
Issue Time: 2020 Mar 31 0014 UTC

EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 3717
Valid From: 2020 Mar 30 1745 UTC
Now Valid Until: 2020 Mar 31 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.

00:05 UTC

Space Weather Message Code: ALTK04
Serial Number: 2152
Issue Time: 2020 Mar 31 0005 UTC

ALERT: Geomagnetic K-index of 4
Threshold Reached: 2020 Mar 31 0000 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.

Monday, 30 March 2020

17:45 UTC

Space Weather Message Code: WARK04
Serial Number: 3717
Issue Time: 2020 Mar 30 1745 UTC

WARNING: Geomagnetic K-index of 4 expected
Valid From: 2020 Mar 30 1745 UTC
Valid To: 2020 Mar 31 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.

Thursday, 26 March 2020

12:27 UTC

Space Weather Message Code: ALTEF3
Serial Number: 3030
Issue Time: 2020 Mar 26 1227 UTC

CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Continuation of Serial Number: 3029
Begin Time: 2020 Mar 23 1635 UTC
Yesterday Maximum 2MeV Flux: 1398 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.

Wednesday, 25 March 2020

12:25 UTC

Space Weather Message Code: ALTEF3
Serial Number: 3029
Issue Time: 2020 Mar 25 1225 UTC

CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Continuation of Serial Number: 3028
Begin Time: 2020 Mar 23 1635 UTC
Yesterday Maximum 2MeV Flux: 1304 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.

Tuesday, 24 March 2020

14:36 UTC

Space Weather Message Code: ALTEF3
Serial Number: 3028
Issue Time: 2020 Mar 24 1436 UTC

CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Continuation of Serial Number: 3027
Begin Time: 2020 Mar 23 1635 UTC
Yesterday Maximum 2MeV Flux: 1228 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.

Monday, 23 March 2020

16:52 UTC

Space Weather Message Code: ALTEF3
Serial Number: 3027
Issue Time: 2020 Mar 23 1652 UTC

ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Threshold Reached: 2020 Mar 23 1635 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.

04:40 UTC

Space Weather Message Code: WARK04
Serial Number: 3716
Issue Time: 2020 Mar 23 0440 UTC

WARNING: Geomagnetic K-index of 4 expected
Valid From: 2020 Mar 23 0439 UTC
Valid To: 2020 Mar 23 1200 UTC
Warning Condition: Onset

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

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

Thursday, 19 March 2020

01:30 UTC

Space Weather Message Code: ALTK04
Serial Number: 2151
Issue Time: 2020 Mar 19 0130 UTC

ALERT: Geomagnetic K-index of 4
Threshold Reached: 2020 Mar 19 0130 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.

01:28 UTC

Space Weather Message Code: WARK04
Serial Number: 3715
Issue Time: 2020 Mar 19 0128 UTC

WARNING: Geomagnetic K-index of 4 expected
Valid From: 2020 Mar 19 0127 UTC
Valid To: 2020 Mar 19 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.

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