An unseasonably moist and cold Pacific trough produced a strong cold front which stalled over portions of northwest Colorado. The quasi-stationary position of this front and the eventual progression east along the Continental Divide produced anomalous snow over some of the northern and central Colorado mountains above 9000 feet.
Every event with a place to put it; 3 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.
An unseasonably moist and cold Pacific trough produced a strong cold front which stalled over portions of northwest Colorado. The quasi-stationary position of this front and the eventual progression east along the Continental Divide produced anomalous snow over some of the northern and central Colorado mountains above 9000 feet. Additionally, instability in the atmosphere allowed snow levels to drop to near 6500 feet but there were no impacts as roads remained wet.
The local office's own words before the first event, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Grand Junction, CO wrote its last area forecast discussion before the first event at Jun 20, 9:22 PM MST, 3 hours 38 minutes earlier.
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</html>Hazardous Weather Outlook National Weather Service Grand Junction CO 403 AM MDT Thu Jun 20 2019 COZ001>014-017>023-UTZ022>025-027>029-211300- Lower Yampa River Basin-Central Yampa River Basin- Roan and Tavaputs Plateaus-Elkhead and Park Mountains- Upper Yampa River Basin-Grand Valley-Debeque to Silt Corridor- Central Colorado River Basin-Grand and Battlement Mesas- Gore and Elk Mountains/Central Mountain Valleys- Central Gunnison and Uncompahgre River Basin- West Elk and Sawatch Mountains-Flat Tops- Upper Gunnison River Valley-Uncompahgre Plateau and Dallas Divide- Northwest San Juan Mountains-Southwest San Juan Mountains- Paradox Valley/Lower Dolores River- Four Corners/Upper Dolores River-Animas River Basin- San Juan River Basin-Southeast Utah-Eastern Uinta Mountains- Eastern Uinta Basin-Tavaputs Plateau-Arches/Grand Flat- La Sal and Abajo Mountains-Canyonlands/Natural Bridges- 403 AM MDT Thu Jun 20 2019 This hazardous weather outlook is for eastern Utah and western Colorado. .DAY ONE...Today and Tonight Winds will increase today and with dry conditions in place, critical fire weather conditions will be met. Red Flag Warnings have been issued for central eastern Utah and southwestern Colorado. Some showers and storms will fire this afternoon north of I-70. Precipitation will continue overnight for those areas. .DAYS TWO THROUGH SEVEN...Friday through Wednesday Showers and thunderstorms will continue through the weekend. Next week looks to be fairly dry. .SPOTTER INFORMATION STATEMENT... Spotter activation will not be needed.
The national radar mosaic for the moment the first event began.
1 heavy snow, 1 winter storm, 1 winter weather. Local standard time, as filed.
Generally 12 to 20 inches of snow fell above 9000 feet with an estimated 3 to 5 inches falling below that level.
Generally 13 to 15 inches of snow fell across the area with some locally higher amounts estimated. Wind gusts of up to 49 MPH were recorded which resulted in areas of blowing snow.
Generally 5 to 6 inches of snow fell at the higher elevations including a report of 5.5 inches measured by a CoCoRaHS observer located 10.5 miles north-northwest of Cedaredge.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Colorado in 2019Every state in 2019This day in weather historyWarnings in Colorado, June 2019
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: 820855, 820857, 820856.