Space Weather Message Code: WARK04
Serial Number: 3798
Issue Time: 2020 Dec 23 0433 UTC
EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 3797
Valid From: 2020 Dec 21 2220 UTC
Now Valid Until: 2020 Dec 23 1800 UTC
Warning Condition: persistence
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanationPotential 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.