A disturbance embedded in a northwest flow, aided by 120 knot winds aloft, produced significant snowfall accumulations in the northern and central mountains. A snow band sat over the Upper Yampa River Basin the night of November 4th which led to locally heavy snowfall amounts in that area.
Every event with a place to put it; 5 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 disturbance embedded in a northwest flow, aided by 120 knot winds aloft, produced significant snowfall accumulations in the northern and central mountains. A snow band sat over the Upper Yampa River Basin the night of November 4th which led to locally heavy snowfall amounts in that area.
The national radar mosaic for the moment the first event began.
5 winter weather. Local standard time, as filed.
Generally 6 to 12 inches of snow fell across the area. Locally higher amounts included 20 inches at the Whiskey Park and Tower SNOTEL sites.
Snowfall totals ranged from 5 to 10 inches across the area with up to 11.7 inches reported from a location 0.6 miles north-northwest of Steamboat Springs.
Generally 6 to 12 inches of snow were measured across the area. Locally higher amounts included 15 inches at the Vail Ski Area snow stake. Travel was negatively impacted over portions of Interstate 70, including Vail Pass which was closed more than once due to multiple vehicle accidents. Additionally, the slick and snowpacked roads resulted in multiple accidents on Colorado Highway 24, including a jack-knifed semi truck.
Generally 4 to 8 inches of snow fell across the area.
Generally 7 to 10 inches of snow fell across the area. Locally higher amounts included 15 inches at the Ripple Creek SNOTEL site.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Colorado in 2018Every state in 2018This day in weather historyWarnings in Colorado, November 2018
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: 783746, 783750, 783747, 783748, 783749.