Northwest flow resulting in orographic forcing combined with an upper level disturbance to bring significant snow to the northern mountains.
Every event with a place to put it; 2 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.
Northwest flow resulting in orographic forcing combined with an upper level disturbance to bring significant snow to the northern mountains.
The national radar mosaic for the moment the first event began.
2 winter weather. Local standard time, as filed.
Snowfall of 5 to 12 inches occurred while wind gusts of 20 to 30 mph produced blowing and drifting snow.
Snowfall of 5 to 6 inches occurred while wind gusts of 15 to 25 mph produced blowing and drifting snow.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Colorado in 2009Every state in 2009This day in weather historyWarnings in Colorado, February 2009
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: 151552, 151553.