Moisture increased across western Colorado as a closed low drifted across the Desert Southwest before this system eventually lifted east of the Continental Divide. This resulted in moderate snowfall over the southwest and west-central mountain ranges.
Every event with a place to put it; 4 filed by county or forecast zone are drawn at its center, in a lighter ring. Tap one for its entry below.
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.
The episode as NWS GJT wrote it up.
Moisture increased across western Colorado as a closed low drifted across the Desert Southwest before this system eventually lifted east of the Continental Divide. This resulted in moderate snowfall over the southwest and west-central mountain ranges.
The national radar mosaic for the moment the first event began.
4 winter weather. Local standard time, as filed.
Generally 4 to 8 inches of snow fell across the area.
Generally 5 to 7 inches of snow fell across the area with up to 10 inches estimated by a trained spotter 5 miles east of Sawpit.
Generally 3 to 6 inches of snow fell across the area with close to 9 inches measured 2 miles south-southwest of Snowmass Village.
Generally 4 to 8 inches of snow fell across the area with 10 inches measured 6 miles north of Crested Butte.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Colorado in 2020Every state in 2020This day in weather historyWarnings in Colorado, December 2020
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 2026-09-30. Each event’s entry at NCEI: 925755, 925754, 925756, 925757.