Space Weather Message Code: ALTK04
Serial Number: 2138
Issue Time: 2019 Nov 21 2247 UTC
ALERT: Geomagnetic K-index of 4
Threshold Reached: 2019 Nov 21 2244 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: 2136
Issue Time: 2019 Nov 21 2244 UTC
ALERT: Geomagnetic K-index of 4
Threshold Reached: 2019 Nov 21 1544 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.