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Auroras may paint the northern US tonight as Earth reels from 'strong' G3 geomagnetic storm
Auroras could paint the skies Monday (Sept. 16) at much lower latitudes than usual as a "strong" G3-class geomagnetic storm ...
Gigantic 'G3' solar storm set to hit the Earth this week - how it may affect drivers
G1 is classed as "minor", G2 is "moderate" and G3 is "strong." A G3 storm is currently forecast for Friday, October 4, ...