One area of concern for possible locally heavy snowfall will be around Big Sky to West Yellowstone, Yellowstone National Park to Cooke City and Island Park, ID
Mild, windy and mountain snow in the forecast
By: Mike Heard
and last updated 2020-12-16 15:31:16-05
BOZEMAN â The next 3 to 5 days will be an active time for stronger surface winds and periods of snow.
The combination of a stronger Polar jet stream and embedded Pacific storms will produce periods of snow mostly over mountains and passes through early next week. Favored areas along the MT/ID state line will have a higher probability for accumulating snow and include West Yellowstone, Yellowstone National Park to Cooke City and back to the west over Lookout, Lolo, Lost Trail mountain passes.
A tightening pressure gradient will develop in favored downsloping areas east of the Rocky mountain front Friday into Saturday. This means surface wind gusts could reach or exceed 60 mph for central Montana counties.