Winter Storm — Bighorn Mountains Southeast, Wyoming

2021-10-11 to 2021-10-13 · Bighorn Mountains Southeast, Wyoming

Event narrative

Heavy snow fell throughout the eastern Bighorn Range. The highest amount was 20 inches at the Soldier Park SNOTEL site.

Wider weather episode

The first widespread winter storm of the season hit western and central Wyoming. The main effects from the storm were focused around central Wyoming. Areas favored by east to northeast flow received the most snow, especially in Johnson and Natrona counties. Areas near Buffalo received the most snow with up to 18 inches reported on the west side of town. In Natrona County, areas around Casper received anywhere from 10 to 18 inches, although amounts dropped substantially farther west. Amounts over 6 inches were also reported in Fremont and Hot Springs counties. In the higher elevations, the eastern slopes of the Bighorn Range had the most with up to 20 inches reported. The snow combined with a gusty wind to close many major roads for a time, including Interstate 25, US 20/26, and US 287.

Source: NOAA Storm Events Database, event_id 987369. Narrative written by the NWS forecast office that issued the report.