A moist northwest flow with embedded disturbances produced significant snowfall in some mountainous areas of western Colorado. Most of the snowfall ended late on the 22nd, though it lingered a little past midnight into the 23rd at a few locations.
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.
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.
A moist northwest flow with embedded disturbances produced significant snowfall in some mountainous areas of western Colorado. Most of the snowfall ended late on the 22nd, though it lingered a little past midnight into the 23rd at a few locations.
The national radar mosaic for the moment the first event began.
6 winter weather. Local standard time, as filed.
Snowfall accumulations of 8 to 12 inches were measured across the area. Locally heavier amounts included 16 inches at the Tower SNOTEL site. Wind gusts of 25 to 45 mph produced areas of blowing and drifting snow.
Snowfall accumulations of 5 to 10 inches were measured across the area. Wind gusts of 25 to 45 mph produced areas of blowing and drifting snow.
Snowfall accumulations of 4 to 11 inches were measured across the area. Wind gusts of 20 to 40 mph produced areas of blowing and drifting snow.
Snowfall accumulations of 3 to 8 inches were measured across the area. Wind gusts of 25 to 35 mph produced areas of blowing and drifting snow.
Snowfall accumulations of 4 to 9 inches were measured across the area. Wind gusts of 20 to 30 mph produced areas of blowing and drifting snow.
Snowfall accumulations of 4 to 12 inches were measured across the area. Wind gusts of 25 to 50 mph produced areas of blowing and drifting snow.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Colorado in 2011Every state in 2011This day in weather historyWarnings in Colorado, January 2011
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 2026-10-01. Each event’s entry at NCEI: 279738, 279740, 279739, 279741, 279742, 279743.