Fellow CHR member VE7KWK files the following:
Space Weather Message Code: WARK06
Serial Number: 400
Issue Time: 2017 Sep 14 1553 UTC
WARNING: Geomagnetic K-Index of 6 expected
Valid From: 2017 Sep 14 1555 UTC
Valid To: 2017 Sep 14 2100 UTC
Warning Condition: Onset
NOAA Scale: G2 – Moderate
NOAA Space Weather Scale descriptions can be found at
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.