High Wind — Fergus County Below 4500ft, Montana
2025-12-19 · Fergus County Below 4500ft, Montana
61 MG
Magnitude
Event narrative
Multiple sensors measured gusts of 58 mph or greater, including ASOS station KLWT Lewistown Airport, AWOS stations K1OM Oscar and KMVH N Bar Ranch, ns mesonet stations MTBOH Bohemian Corner (MT DOT) and MTBCH Beacon Hill (MT DOT). The peak gust observed was 70 mph at K1OM Oscar.
Wider weather episode
Surface low pressure gradually deepened in lee of terrain across Northern MT and Southern AB ahead of a shortwave approaching the region during the 18th. As mid level flow increased, strong winds developed, eventually spreading across most of the region heading into the 19th behind a cold front.
Source: NOAA Storm Events Database, event_id 1306448. Narrative written by the NWS forecast office that issued the report.