A frontal boundary slowly pushing through the northern tier of the country will be the focus of severe thunderstorms over the next couple of days, with thunderstorms capable of producing tornadoes, hurricane-force wind gusts and very large hail.

A geomagnetic storm will expand visibility of the aurora borealis Thursday and Friday nights. See maps of which states will get to see the northern lights.

Sky watchers in northern United States may witness a rare spectacle. The northern lights could appear overnight on August 8–9. A coronal mass ejection