Space Weather Message Code: WARK04

Serial Number: 5250

Issue Time: 2026 Feb 07 2125 UTC

EXTENDED WARNING: Geomagnetic K-index of 4 expected

Extension to Serial Number: 5249

Valid From: 2026 Feb 06 1253 UTC

Now Valid Until: 2026 Feb 08 1200 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.