Fall turns to Winter Across the High Peaks of the West

ROCKIES - A strong, upper-level low-pressure system is moving through the western United States, bringing heavy rain, thunderstorms, snow, and wind. Much cooler temperatures are moving in as well, particularly behind a trailing frontal system, which will help produce heavy mountain snow.

Cold air behind the front has started changing rain to snow from Montana into Wyoming with more heavy snow for mountain areas into Sunday night.

Winter weather alerts have been issued for some heavy snow that will be expected in the mountains, mostly above 5,500 feet.

More details on your Western Regional Forecast can always be found :50 past the hour on WeatherNation.