WARNING: Geomagnetic K-Index of 6

Space Weather Message Code: WARK06 Serial Number: 393 Issue Time: 2017 Aug 31 1336 UTC

WARNING: Geomagnetic K-Index of 6 expected

Valid From: 2017 Aug 31 1337 UTC Valid To: 2017 Aug 31 1800 UTC

Warning Condition: Onset NOAA Scale: G2 - Moderate

NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Potential Impacts:

Area of impact primarily poleward of 55 degrees Geomagnetic Latitude. Induced Currents -

Power grid fluctuations can occur. High-latitude power systems may experience voltage alarms.

Spacecraft - Satellite orientation irregularities may occur; increased drag on low Earth-orbit satellites is possible.

Radio - HF (high frequency) radio propagation can fade at higher latitudes.

Aurora - Aurora may be seen as low as New York to Wisconsin to Washington state.