Extreme Cold/Wind Chill in Upper Green River Basin, Wyoming

Extreme Cold/Wind Chill January 20, 2025 · Upper Green River Basin, Wyoming

What the National Weather Service wrote

Big Piney ASOS had several hours with apparent temperatures near or below -40 during the early morning.

An arctic air mass moved over Wyoming leading to early morning apparent temperatures falling into the -35 to -45 range for several basins.

Source: NOAA Storm Events Database, event 1229502. Narratives are written by the National Weather Service forecast office that issued the report.

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