There is a possibility of Aurora activity to be good tonight for those lucky enough to be in the right place to see it.
A report on SpaceWeather.com states that active Sunspot 1401 erupted on the 19th producing an M3 class solar flare and a full halo coronal mass ejection which is expanding almost directly in the direction of the Earth. Strong magnetic storms are possible and the predicted impact is 22.30 UT (+-7 hrs) today.
A tweet from the British Geological Survey says:
Next 24hrs - QUIET. Expect STORM conditions late on Sat to Sun due to full halo CME seen on 19th. Good chance of seeing aurora in the north.
The BGS site also has the following storm warning:
For a simple explanation of what causes an aurora take a look the the web site of The Center for Computational Heliophysics in Hawaii HERE.
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