The National Weather Service has issued a winter weather advisory until 11 p.m. Monday. mostly because of blowing snow on Western Montana highways.

Forecaster Leanne Allegretto says the mountain passes surrounding Missoula will be the hardest hit with heavy snow and gusty winds causing difficult or even dangerous driving conditions.

Allegratto says the Missoula and Bitterroot valleys will only receive 1 to 2 inches of snow, but strong winds will cause hazardous driving conditions here as well.

Forecaster Leanne Allegretto