727
WOXX11 KWNP 151901
WARK05

Space Weather Message Code: WARK05
Serial Number: 2265
Issue Time: 2026 Sep 15 1856 UTC

WARNING: Geomagnetic K-index of 5 expected
Valid From: 2026 Sep 15 1855 UTC
Valid To: 2026 Sep 16 0600 UTC
Warning Conditions: Onset
Noaa Scale: G1 - Minor

Comment:
NOAA Scale: G1 - Minor
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.

# Issued by the US Dept. of Commerce, NOAA, Space Weather Prediction Center
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