Space Weather Message Code: WARK04
Serial Number: 3791
Issue Time: 2020 Nov 22 1717 UTC
EXTENDED WARNING: Geomagnetic K-index: 4 "EXPECTED"
Extension to Serial Number: 3790
Valid From: 2020 Nov 21 2053 UTC
Now Valid Until: 2020 Nov 23 0900 UTC
Warning Condition: Persistence
NOAA Space Weather Scale descriptions can be found at
Scale Description
Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents – Weak power grid fluctuations can occur.
Aurora – Northern Lights may be visible at High Latitudes (60°+) for example in: Sweden, Finland and Norway.