Space Weather Message Code: ALTK04
Serial Number: 2191
Issue Time: 2021 Feb 13 1047 UTC

ALERT: Geomagnetic K-index of 4
Threshold Reached: 2021 Feb 13 1045 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.

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Space Weather Message Code: WARK04
Serial Number: 3822
Issue Time: 2021 Feb 13 0421 UTC

WARNING: Geomagnetic K-index of 4 expected
Valid From: 2021 Feb 13 0420 UTC
Valid To: 2021 Feb 13 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.