Space Weather Message Code: WARK04
Serial Number: 2979
Issue Time: 2016 Sep 21 0210 UTC
EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 2978
Valid From: 2016 Sep 19 1535 UTC
Now Valid Until: 2016 Sep 20 1400 UTC
Warning Condition: Persistence
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: WARK04
Serial Number: 2978
Issue Time: 2016 Sep 20 1536 UTC
EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 2977
Valid From: 2016 Sep 19 1535 UTC
Now Valid Until: 2016 Sep 21 0300 UTC
Warning Condition: Persistence
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: WARK04
Serial Number: 2977
Issue Time: 2016 Sep 20 0634 UTC
EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 2976
Valid From: 2016 Sep 19 1535 UTC
Now Valid Until: 2016 Sep 20 1600 UTC
Warning Condition: Persistence
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.