A pair of strong geomagnetic storms could produce a spectacular northern lights show for millions of Americans again this weekend, space forecasters say. The National Oceanic and Atmospheric Administration’s Space Weather Prediction Center issued “strong” geomagnetic storm watches following recent explosions on the sun that triggered multiple

The Northern Lights may be seen in the U.S. this Friday and Sunday nights after major solar activity on Thursday, including the largest solar flare of this solar cycle.

The northern lights may be visible over the lower 48 states starting Thursday night, offering a somewhat rare chance to see the spectacular phenomenon. The view line for Thursday and Friday night’s Aurora Borealis extends as far south as the northern tip of Oregon,