Forecasts say up to three glancing CME impacts could trigger G1 and possible G2 geomagnetic storms through May 20, boosting aurora chances across parts of the northern U.S.

The northern lights may be visible overnight on Saturday, May 16, through Sunday, May 17, after a large coronal hole opened on the sun, sending a super-charged solar wind toward…

A coronal mass ejection from the Sun could cause the aurora to appear farther south than usual on Monday night, according to NOAA.

Forecasts say up to three glancing CME impacts could trigger G1 and possible G2 geomagnetic storms through May 20, boosting aurora chances across parts of the northern U.S.