Space Weather Message Code: ALTK04
Serial Number: 2187
Issue Time: 2021 Jan 25 2143 UTC
ALERT: Geomagnetic K-index of 4
Threshold Reached: 2021 Jan 25 2143 UTC
Synoptic Period: 2100-2400 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.
Space Weather Message Code: ALTK04
Serial Number: 2186
Issue Time: 2021 Jan 25 0906 UTC
ALERT: Geomagnetic K-index of 4
Threshold Reached: 2021 Jan 25 0859 UTC
Synoptic Period: 0600-0900 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.