A combination of rain and snow could also trigger rock slides and trigger power outages and downed trees. The NWS warns against unnecessary travel for this area. In the West Glacier Region, the winter storm warning applies from 2 a.m. MDT on Saturday to noon on Sunday.

Montana is bracing for an unusual June winter storm. The National Weather Service forecasts heavy snowfall in western and central regions. Travel disruptions and power outages are possible. This unseasonal event is due to a strong low-pressure system.

As summer officially kicks off, many Americans are dusting off their swimsuits and planning outdoor excursions. However, a rare and formidable weather phenomenon is poised to disrupt those plans, bringing an unseasonal winter storm that could dump up to two feet of snow in parts of the country.