High Wind — Bighorn Mountains Southeast, Wyoming

2025-12-19 · Bighorn Mountains Southeast, Wyoming

Event narrative

The Schoolhouse RAWS site had maximum wind gusts of 85 mph.

Wider weather episode

A moist Pacific trough moved into western Wyoming and brought heavy snow to the western mountains. The heaviest snow fell in Yellowstone Park where the Two Oceans Plateau SNOTEL site reported 28 inches of new snow. The Absarokas, Tetons, Wind River, Salt River, and Wyoming Ranges all reported new snow totals of over 20 inches. The heavy snow resulted in difficult travel conditions and road closures. In areas east of the Continental Divide, high wind was the main hazard. The most widespread high wind occurred in Natrona County where there were widespread wind gusts over 70 mph, with a maximum wind gust of 88 mph along Hat Six Road to the east of Casper. The Johnson County airport had a wind gust of 81 mph.

Source: NOAA Storm Events Database, event_id 1307302. Narrative written by the NWS forecast office that issued the report.