High Wind — Green Mountains & Rattlesnake Range, Wyoming

2021-12-11 to 2021-12-12 · Green Mountains & Rattlesnake Range, Wyoming

Event narrative

A maximum wind gust of 78 mph was registered at the Fales Rock RAWS site. Other notable wind gusts included 60 mph near Pathfinder Reservoir and 58 mph over Beaver Rim.

Wider weather episode

A trough moving across Wyoming, strong mid-level winds, and a potent jet combined to produce high wind across much of central Wyoming. The highest recorded wind was west of Clark where a maximum wind gust of 118 mph occurred. Wind gusts of 88 mph were observed around Casper destroying a horse barn at the fairgrounds. Wind gusts of hurricane force also occurred in the Green Mountains and Wind River Range. The high winds led to road closures at times as well as a ban on high-profile vehicles on many roads.

Source: NOAA Storm Events Database, event_id 996347. Narrative written by the NWS forecast office that issued the report.