The northern lights may be visible in Canada and the U.S. overnight on Thursday, June 4, through Friday, June 5, after a forecast for G1 geomagnetic storming.

The northern lights may be visible in Canada and the U.S. overnight on Thursday, June 4, through Friday, June 5, after a forecast for G1 geomagnetic storming.

NOAA has upgraded its aurora forecast, with strong to severe geomagnetic storms possible Thursday and Friday, raising Northern Lights chances across 23 U.S. states.