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

2023-01-29 to 2023-01-31 · Upper Green River Basin Foothills, Wyoming

Event narrative

Low temperatures under 30 below zero were common through this period, including minus 40 north of Daniel and 37 near Daniel.

Wider weather episode

The combination of an Arctic air mass, a clear sky, light wind, and deep snowpack brought record cold temperatures to most of western and central Wyoming. Most of the coldest temperatures occurred in the snow covered basins where low temperatures of minus 30 were commonplace with some areas seeing low temperatures less than 40 below zero. The coldest temperature in the forecast area occurred in Yellowstone Park where Grant Village feel to minus 47 degrees on the morning of January 30th. Wind chills were in the 30 to 40 below range for most basins.

Source: NOAA Storm Events Database, event_id 1078218. Narrative written by the NWS forecast office that issued the report.