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937 WOXX13 KWNP 201301 WARK04 Space Weather Message Code: WARK04 Serial Number: 2250 Issue Time: 2014 Apr 20 1258 UTC EXTENDED WARNING: Geomagnetic K-index of 4 expected Extension to Serial Number: 2249 Valid From: 2014 Apr 19 1815 UTC Now Valid Until: 2014 Apr 21 0700 UTC Warning Condition: Persistence 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