Space Weather Message Code: ALTK04
Serial Number: 2089
Issue Time: 2018 Nov 11 0003 UTC

ALERT: Geomagnetic K-index of 4
Threshold Reached: 2018 Nov 10 2359 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.

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