Space Weather Message Code: WARK04
Serial Number: 3143
Issue Time: 2017 Feb 23 2346 UTC
EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 3142
Valid From: 2017 Feb 23 1641 UTC
Now Valid Until: 2017 Feb 24 1300 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.