Aurora Borealis Viewing


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Opmmur

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Aurora Borealis Viewing

It appears as if the Aurora Borealis and Australis are only visible when
there is a significant irregular output from the Sun.

There is a local alert for people in the very Southern Oz States that
they may be able to see Aurora Australis and this information from
another source. Aurora USA - Aurora may be seen as low as New York to Wisconsin to Washington state.

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.

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.