Cold/Wind Chill — Upper Green River Basin Foothills, Wyoming

2014-12-31 · Upper Green River Basin Foothills, Wyoming

Event narrative

The cooperative observer at the Daniel Fish Hatchery had a low temperature of -48F on the morning of Wednesday, December 31. The observer also reported 18 inches of snow on the ground. Other very cold temperatures included -42F at Bondurant and -35F at Boulder.

Wider weather episode

Northerly flow following the passage of an Arctic cold front brought brutally cold temperatures and dangerous wind chills to much of western and central Wyoming. The Daniel cooperative observer recorded a low temperature of -48F on the morning of Wednesday, December 31. In addition, many locations across Fremont, Hot Springs, Lincoln, Sweetwater, and Washakie counties saw temperatures of -30F to -35F. Wind chill temperatures of -30F were common, as well, especially in a swath from southern Lincoln County, east through Sweetwater County, and on into Natrona County.

Source: NOAA Storm Events Database, event_id 549663. Narrative written by the NWS forecast office that issued the report.