CHANCE OF MAGNETIC STORMS: A large coronal hole is turning toward Earth, and it is spewing a stream of high-speed solar wind into space. NOAA forecasters expect the stream to reach our planet on Oct. 25-26 with a 35% chance of geomagnetic storms when it arrives. Storm levels could reach category G2, which means the glow of auroras might be visible not only around the Arctic Circle but also in northern-tier US states such as Minnesota and Michigan. Visit Spaceweather.com for more information.
The dark area in this extreme UV image of the sun is a coronal hole--a region where magnetic fields have opened up and allowed solar wind to escape. Date: Oct. 24, 2016. Image credit: NASA's Solar Dynamics Observatory
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