Colorado, 2025

Heavy Snow and Winter Weather in Colorado, December 4 to 7, 2025

December 4 to 7, 2025 · NWS GJT · 6 events in 6 counties and zones

A surge of deeper moisture moved across the area accompanied by a strong low pressure trough and upper level jet. This resulted in moderate snow across the central Colorado mountains and I-70 corridor from south of Glenwood Springs towards Basalt and Carbondale.

Where it happened

Every event with a place to put it; 6 filed by county or forecast zone are drawn at its center, in a lighter ring. Tap one for its entry below.

  • Tornadoes
  • Tropical storms and surge
  • Floods
  • Wind
  • Hail
  • Winter weather
  • Heat and drought
  • Cold
  • Fire, smoke and dust
  • Marine and coastal
  • Other

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The toll

Deaths
0
Injuries
0
Property damage
None recorded
Crop damage
None recorded
Events
6

Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.

What happened

The episode as NWS GJT wrote it up.

A surge of deeper moisture moved across the area accompanied by a strong low pressure trough and upper level jet. This resulted in moderate snow across the central Colorado mountains and I-70 corridor from south of Glenwood Springs towards Basalt and Carbondale. The heaviest snow occurred across the northwest Colorado mountains where the Elkheads and Park Range Mountains received up to 2 to 3 feet of snow. The strong jet also resulted in some strong wind gusts in the mountains resulting in blowing snow.

The radar

The national radar mosaic for the moment the first event began.

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Event by event

5 winter weather, 1 heavy snow. Local standard time, as filed.

Winter Weather, Upper Yampa River Basin

When
December 4, 10:30 PM MST to December 6, 11:30 AM MST
Where
Upper Yampa River Basin forecast zone
Reported by
CoCoRaHS
Coordinates
40.485, -106.991 (the zone’s center; the record gives no point)

Generally 4 to 10 inches of snow fell across the area with 9.8 inches of snow reported at Steamboat Springs 1.1 E.

Heavy Snow, Elkhead and Park Mountains

When
December 5, 5:00 PM MST to December 7, 4:00 AM MST
Where
Elkhead and Park Mountains forecast zone
Reported by
SNOTEL
Coordinates
40.552, -107.599 (the zone’s center; the record gives no point)

Generally 10 to 30 inches fell across the area with locally higher amounts up to 36 inches at Tower.

Winter Weather, Gore and Elk Mountains/Central Mountain Valleys

When
December 5, 7:00 PM MST to December 6, 8:00 PM MST
Where
Gore and Elk Mountains/Central Mountain Valleys forecast zone
Reported by
SNOTEL
Coordinates
39.481, -107.172 (the zone’s center; the record gives no point)

Generally 5 to 12 inches of snow fell across the area with locally higher amounts up to 14 inches at Castle Peak.

Winter Weather, Flattop Mountains

When
December 5, 8:00 PM MST to December 6, 3:00 PM MST
Where
Flattop Mountains forecast zone
Reported by
SNOTEL
Coordinates
40.062, -107.603 (the zone’s center; the record gives no point)

Generally 7 to 12 inches of snow fell across the area.

Winter Weather, West Elk and Sawatch Mountains

When
December 5, 9:00 PM MST to December 6, 6:00 PM MST
Where
West Elk and Sawatch Mountains forecast zone
Reported by
CoCoRaHS
Coordinates
38.643, -107.721 (the zone’s center; the record gives no point)

Generally 6 to 13 inches of snow fell across the area with 13 inches of snow reported at Crested Butte 6.2 N.

Winter Weather, Central Colorado River Basin

When
December 6, 12:45 AM MST to 8:00 PM MST
Where
Central Colorado River Basin forecast zone
Reported by
CoCoRaHS
Coordinates
39.481, -107.172 (the zone’s center; the record gives no point)

Generally 3 to 8 inches of snow fell across the area mainly south of Glenwood Springs towards Basalt and Carbondale with 1 to 2 inches of snow elsewhere. Locally higher amounts of 11.2 inches of snow was reported at Basalt 5.8 E.

What these are

Winter Weather
Snow, sleet or freezing rain below warning levels that still caused disruption, damage or casualties.
Heavy Snow
Snowfall reaching the local warning threshold without the other hazards of a winter storm.

After NWS Directive 10-1605, the rules offices file Storm Data by.

The same day elsewhere

More

Every storm in Colorado in 2025Every state in 2025This day in weather historyWarnings in Colorado, December 2025

Sources

NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-24. Each event’s entry at NCEI: 1308286, 1308297, 1308288, 1308290, 1308289, 1308287.