Issue Time: 2017 Sep 08 0537 UTC
EXTENDED WARNING: Geomagnetic K-index of 7 or greater expected
Valid From: 2017 Sep 07 2300 UTC
Now Valid Until: 2017 Sep 08 1500 UTC
Warning Condition: Persistence
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.
This post compiled using data gathered from NOAA and NASA.