Space Environment Warning
Issued by NWS
WOXX12 KWNP 200530
Space Weather Message Code: WARK06
Serial Number: 339
Issue Time: 2016 Jul 20 0528 UTC
EXTENDED WARNING: Geomagnetic K-Index of 6 expected
Extension to Serial Number: 338
Valid From: 2016 Jul 20 0030 UTC
Now Valid Until: 2016 Jul 20 1200 UTC
Warning Condition: Persistence
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.
# Issued by the US Dept. of Commerce, NOAA, Space Weather Prediction Center
# Recent messages, data, and help at http://swpc.noaa.gov/alerts/
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