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Space Weather Message Code: ALTK07Serial Number: 90Issue Time: 2015 Mar 17 1334 UTCALERT: Geomagnetic K-index of 7Threshold Reached: 2015 Mar 17 1330 UTCSynoptic Period: 1200-1500 UTC Active Warning: YesNOAA Scale: G3 - StrongNOAA Space Weather Scale descriptions can be found atwww.swpc.noaa.gov/noaa-scales-explanationPotential 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.
QuoteSpace Weather Message Code: ALTK07Serial Number: 90Issue Time: 2015 Mar 17 1334 UTCALERT: Geomagnetic K-index of 7Threshold Reached: 2015 Mar 17 1330 UTCSynoptic Period: 1200-1500 UTC Active Warning: YesNOAA Scale: G3 - StrongNOAA Space Weather Scale descriptions can be found atwww.swpc.noaa.gov/noaa-scales-explanationPotential 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.This might be an opportunity for Aurora viewing and whistler listening... Greg H.