Winter Weather Advisory issued March 21 at 2:34AM MDT until March 22 at 12:00PM MDT by NWS Great Falls MT

* WHAT…Snow expected. Total snow accumulations between 2 and 4
inches. Winds gusting as high as 50 mph.

* WHERE…The Mountains of Southwestern Montana south of Interstate
90, and The Madison and Beaverhead River Valleys.

* WHEN…From midnight tonight to noon MDT Saturday.

* IMPACTS…Plan on slippery road conditions. Widespread blowing
snow could significantly reduce visibility.

* ADDITIONAL DETAILS…Most of the snow will fall during a brief
period during the overnight hours, with intense snowfall rates of
up to 2 inches per hour for a time.