Michigan thunderstorms can cause widespread damage. What you should know about watches, warnings and when to take cover.

The National Weather Service said that heavy snow was expected in Montana, near Pryor and along the northern Bighorn Mountains.

According to the NWS, a winter storm warning means there is at least an 80 percent chance of "impactful" winter weather during the warning period. Mist rises above ice floes on the Yellowstone ...

The National Weather Service issues a variety of outlooks, watches and warning, and knowing the difference ... and a damaging ice storm in March. A watch is intended to give you time to prepare ...