A trough of low pressure and associated cold front trekked across western Colorado and produced moderate to heavy snowfall over the southwest and west-central mountains. Favorable southwesterly flow ahead of this system kept snow levels high before colder air brought levels down to valley floors during the latter half of the event.
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.
A trough of low pressure and associated cold front trekked across western Colorado and produced moderate to heavy snowfall over the southwest and west-central mountains. Favorable southwesterly flow ahead of this system kept snow levels high before colder air brought levels down to valley floors during the latter half of the event.
The national radar mosaic for the moment the first event began.
3 winter weather, 1 heavy snow. Local standard time, as filed.
Generally 5 to 12 inches of snow fell across the area with locally higher amounts up to 16 inches.
Generally 6 to 12 inches of snow fell across the area.
Generally 4 to 9 inches of snow fell across the area.
Generally 4 to 7 inches of snow fell across the area. Moderate to heavy snow led to hazardous travel conditions, particularly along I-70 where Vail Pass was closed for a short period.
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, November 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 2026-10-01. Each event’s entry at NCEI: 922671, 922673, 922672, 922674.