INCREASED SOLAR ACTIVITY SET TO IMPACT EARTH OVER THE NEXT 3 DAYS BEGINNING 12/22/17


On Dec. 22nd or 25th, Earth will cross a fold in the heliospheric current sheet--a vast wavy structure in interplanetary space separating regions of opposite magnetic polarity. This is called a "solar sector boundary crossing," and it could trigger geomagnetic activity around Earth's poles.


Solar wind flowing from the indicated coronal hole could reach Earth as early as Dec. 22-25. 

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