Saturday, April 22, 2017

ALERT: Geomagnetic K-index of 6


Space Weather Message Code: ALTK06

Serial Number: 430 Issue Time: 2017 Apr 23 0001 UTC

ALERT: Geomagnetic K-index of 6

Threshold Reached: 2017 Apr 22 2359 UTC Synoptic Period: 2100-2400 UTC Active Warning: Yes 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. I

nduced 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.

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