Space Weather Message Code: WARK04 Serial Number: 3982 Issue Time: 2021 Dec 03 1933 UTC WARNING: Geomagnetic K-index of 4 expected Valid From: 2021 Dec 03 1933 UTC Valid To: 2021 Dec 04 0600 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.
