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Items in grey italics apparently are older than 24 hours

670
WOXX13 KWNP 261201
WARK04

Space Weather Message Code: WARK04
Serial Number: 5275
Issue Time: 2026 Feb 26 1155 UTC

EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 5274
Valid From: 2026 Feb 25 2140 UTC
Now Valid Until: 2026 Feb 26 1800 UTC
Warning Condition: Persistence
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.

# Issued by the US Dept. of Commerce, NOAA, Space Weather Prediction Center
# Recent messages, data, and help at http://swpc.noaa.gov/alerts/
# Send questions to SWPC.Webmaster@noaa.gov

300
WOXX11 KWNP 260116
WARK05

Space Weather Message Code: WARK05
Serial Number: 2201
Issue Time: 2026 Feb 26 0110 UTC

WARNING: Geomagnetic K-index of 5 expected
Valid From: 2026 Feb 26 0109 UTC
Valid To: 2026 Feb 26 0900 UTC
Warning Condition: Onset
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
# Recent messages, data, and help at http://swpc.noaa.gov/alerts/
# Send questions to SWPC.Webmaster@noaa.gov