A Pacific trough brought widespread significant snowfall to the region.
Every event with a place to put it; 7 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 Pacific trough brought widespread significant snowfall to the region.
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 Feb 22, 4:52 PM MST, 3 hours 8 minutes earlier.
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</html>Hazardous Weather Outlook National Weather Service GRAND JUNCTION CO 447 AM MST Thu Feb 22 2018 COZ001>014-017>023-UTZ022>025-027>029-231200- 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- 447 AM MST Thu Feb 22 2018 This hazardous weather outlook is for eastern Utah and western Colorado. .DAY ONE...Today and Tonight Widespread snow will continue across much of southwest and central Colorado this morning. An additional 2 to 4 inches in the Pagosa Springs area is expected this morning and from 3 to 6 inches in the southwest San Juan Mountains. Snow becomes more showery and scattered in coverage this afternoon. Additional accumulations will be more localized with heavy bursts of snow possible over the higher terrain this afternoon. Light scattered snow showers are expected to continue tonight. .DAYS TWO THROUGH SEVEN...Friday through Wednesday The weather pattern will remain active during the latter part of the week through the middle of the coming week. A storm arriving Friday has the potential to yield significant snowfall accumulations through Saturday. Additional snowfall is possible Sunday, then again Tuesday night and Wednesday. .SPOTTER INFORMATION STATEMENT... Spotter activation is not expected today or tonight, however spotters are encouraged to report snowfall amounts to the National Weather Service in Grand Junction. NL
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</html>The national radar mosaic for the moment the first event began.
7 winter weather. Local standard time, as filed.
Snowfall totals generally ranged from 4 to 10 inches across the area, with locally higher amounts up to 14 inches.
Snowfall totals ranged from 3 to 8 inches across the area.
Snowfall totals ranged from 3 to 9 inches across the area.
Snowfall totals of 5 to 11 inches occurred across the area.
Snowfall totals generally ranged from 4 to 10 inches across the area.
Snowfall totals ranged from 4 to 8 inches across the area.
Snowfall totals ranged from 5 to 7 inches across the area.
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, February 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 2026-09-24. Each event’s entry at NCEI: 732469, 732470, 732471, 732467, 732468, 732473, 732472.