[SFDXA] Surprisingly Strong Geomagnetic Storm Sparks Auroras over the USA

[WILLIAM MARX]

Space Weather News for Sept. 28, 2017
http://spaceweather.com
https://www.facebook.com/spaceweatherdotcom

SURPRISINGLY STRONG GEOMAGNETIC STORM: Knowing that a solar wind stream was heading for Earth, forecasters predicted a geomagnetic storm last night. However, they didn't predict it would be so strong, a G3-class event. During the peak of this surprising space storm, Northern Lights spilled over the Canadian border into more than half a dozen US states. Visit Spaceweather.com for pictures of the display and updates as the solar wind continues to blow.