Space Weather Message Code: ALTK07 Serial Number: 111 Issue Time: 2017 Sep 28 0805 UTC
ALERT: Geomagnetic K-index of 7 Threshold Reached: 2017 Sep 28 0805 UTC Synoptic Period: 0600-0900 UTC Active
Warning: Yes NOAA Scale: G3 - Strong NOAA
Space Weather Scale descriptions can be found at 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.
Editor's note
Brace for severe weather and significant geological events for next two weeks