Space Environment Warning
Issued by NWS
Issued by NWS
457 WOXX13 KWNP 160221 WARK04 Space Weather Message Code: WARK04 Serial Number: 5151 Issue Time: 2025 Nov 16 0219 UTC EXTENDED WARNING: Geomagnetic K-index of 4 expected Extension to Serial Number: 5150 Valid From: 2025 Nov 15 2000 UTC Now Valid Until: 2025 Nov 16 2359 UTC Warning Condition: Onset 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