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Solar Storm From Holes in Sun's Corona Headed Straight for Earth
http://www.newsweek.com/solar-storm-aurora-sun-corona-holes-1726304
On July 19, parts of North America got the chance to see the northern lights in lower latitudes than usual thanks to a solar storm and now another solar storm is due to hit Earth on July 20.
According to the National Oceanic and Atmospheric Administration (NOAA), solar winds caused by two recently observed holes in the Sun's corona will arrive between July 20-22, resulting in a G1 geomagnetic storm.