GEOMAGNETIC STORM: A sharp gust of solar wind hit Earth's magnetosphere today, April 5th, at approximately 0800 UT and sparked the strongest geomagnetic storm of the year (Kindex=7). Although the storm is subsiding now, it is not over. High-latitude sky watchers should remain alert for auroras. [gallery].
http://spaceweather.com/aurora/gallery_01apr10_page3.htm?PHPSESSID=tr5m15142s6va1fle6g63pljl6
http://spaceweather.com/aurora/gallery_01apr10_page3.htm?PHPSESSID=tr5m15142s6va1fle6g63pljl6