Space Weather Message Code: WARK04
Serial Number: 3689
Issue Time: 2019 Oct 28 1217 UTC

CANCEL WARNING: Geomagnetic K-index of 4 expected
Cancel Serial Number: 3688
Original Issue Time: 2019 Oct 24 1103 UTC

Comment: Active conditions no longer expected.

NOAA Space Weather Scale descriptions can be found at

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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