High Wind in Southern High Plains, Montana

Mesonet station DELMT Dellwo (MCSCN) meassured sustained winds, averaged over an hour, of 51 mph on top of gusts up to 74 mph. Montana Mesonet station Bynum W measured a 66 mph gust.

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.