Storm bringing rain, chance of snow to region

Xavier Trudeau
Mai 18, 2017

The valleys across southwest Montana above 3,500 feet - like Philipsburg, Anaconda, and Butte - will also accumulate several inches of snow into Thursday morning.

A cold front will push through the region Tuesday evening and bring widespread precipitation, the agency said.

The National Weather Service has issued a winter weather advisory for the following counties: Clark, Fremont, western Madison, Teton, western Bonneville, Jefferson, Caribou, Bear Lake, Onieda, Bannock, Franklin and Power.

Temperatures also are expected to dip below normal and people who got a head start on flower and vegetable planting last weekend might want to cover them to protect against the danger of frost.

In addition to the snow, the storm could trigger thunderstorms Tuesday and Wednesday in East Idaho. Stevens Pass had 2 inches of new snow.

The chance for rain Wednesday night is 80 percent, forecasters predict.

It stated that snow might make travel conditions hard and that accumulating snow will start on Tuesday evening and will become heavy late Tuesday night. Rainfall of between one-tenth to a quarter inch leads into Wednesday and Wednesday night, when up to an inch could fall. There is a high probability of rain. As the temperatures aloft fall, so does the snow level.

The National Weather Service says snow levels could drop to around 6,500 feet with up to 2 feet possible in some central mountain areas.

Fresh snow on top of older snowpack creates unstable conditions, especially on slopes of 30 degrees or steeper, or wind-facing slopes.

The Friday forecast calls for still more snow.

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