Tuesday, September 27, 2016

A Big Coronal Hole

A large coronal hole is turning toward Earth, and it is spewing a stream of high-speed solar wind. NOAA forecasters expect the stream to reach our planet on Sept. 28-29 with a 50% chance of G1-class geomagnetic storms when it arrives. Stay tuned to Spaceweather.com for the onset of auroras.

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