High Wind in Fergus County Below 4500ft, Montana

Montana Mesonet site Coffee Creek N Agrimet reported a 64mph wind gust. ASOS station at the Lewistown Airport KLWT, AWOS station at N Bar Ranch KMVH, and AWOS station Oscar K1OM reported high wind gusts.

An upper level ridge across the Northern Rockies was flattened by a potent shortwave over Dec 6-8 timeframe. Initially stout zonal mid-level flow was aided by a strengthening pressure gradient to result in quite a few strong winds gusts over the multi-day period. Adequate moistures resulted in locally heavy snow along the Rocky Mountain Front and into Central Montana by Dec 9.