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Displaying AFOS PIL: WARK07 Received: 2021-11-03 22:11 UTC
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014 WOXX14 KWNP 032211 WARK07 Space Weather Message Code: WARK07 Serial Number: 79 Issue Time: 2021 Nov 03 2205 UTC WARNING: Geomagnetic K-index of 7 or greater expected Valid From: 2021 Nov 03 2204 UTC Valid To: 2021 Nov 04 0300 UTC Warning Condition: Onset NOAA Scale: G3 or greater - Strong to Extreme www.swpc.noaa.gov/noaa-scales-explanation Potential Impacts: Area of impact primarily poleward of 50 degrees Geomagnetic Latitude. Induced Currents - Power system voltage irregularities possible, false alarms may be triggered on some protection devices. Spacecraft - Systems may experience surface charging; increased drag on low Earth-orbit satellites and orientation problems may occur. Navigation - Intermittent satellite navigation (GPS) problems, including loss-of-lock and increased range error may occur. Radio - HF (high frequency) radio may be intermittent. Aurora - Aurora may be seen as low as Pennsylvania to Iowa to Oregon. # 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