Extreme Cold/Wind Chill — Flattop Mountains, Colorado

2025-01-20 · Flattop Mountains, Colorado

Event narrative

The Deep Creek RAWS station recorded an approximately 1 hour period where temperatures were below 25F and wind chill values were below 15F. Winds during this period were at or above 10 mph, gusting or sustained. Temperatures hovered around 0F and winds hovered around 10 mph. The coldest winds chill value recorded was -16F. No reports of injuries, damages, or fatalities were received.

Wider weather episode

A cold front ushered in an arctic airmass on the evening of January 17th, as well as bringing widespread wind and snow to eastern Utah and western Colorado. This arctic airmass was reinforced over the course of the next week by several passing waves with their own associated cold fronts. Temperatures during this period were 15-20 degrees below normal, and in some places close to 30 degrees below normal. With temperatures this cold, any amount of wind would produce a dangerously cold wind chill. The coldest period of this event was January 20th to the 22nd, with temperatures finally beginning to moderate after the 23rd.

Source: NOAA Storm Events Database, event_id 1237074. Narrative written by the NWS forecast office that issued the report.