Additional moisture associated with an ongoing atmospheric river event resulted in continued moderate to heavy snow for the mountains of western Colorado.
Every event with a place to put it; 8 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.
Additional moisture associated with an ongoing atmospheric river event resulted in continued moderate to heavy snow for the mountains of western Colorado.
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 Jan 2, 3:19 PM MST, 1 hour 41 minutes earlier.
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</html>Hazardous Weather Outlook National Weather Service Grand Junction CO 355 AM MST Mon Jan 2 2023 COZ001>014-017>023-UTZ022>025-027>029-031100- 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- 355 AM MST Mon Jan 2 2023 This hazardous weather outlook is for eastern Utah and western Colorado. .DAY ONE...Today and Tonight Widespread mountain snow will continue today and tonight as a strong and moist Pacific Storm moves through the area. 5 to 10 inches of additional snowfall are expected across most mountain areas. .DAYS TWO THROUGH SEVEN...Tuesday through Sunday Snow continues Tuesday and Tuesday night bringing an additional 2 to 4 inches of snow. A weak system is possible Thursday night through Friday night, though snowfall isn't expected to be all that heavy with this system. .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.
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GRAND JUNCTION CO
352 PM MST MON JAN 2 2023
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0352 PM SNOW 4 E CAMP BIRD 37.97N 107.66W
01/02/2023 M4.0 INCH OURAY CO DEPT OF HIGHWAYS
SWE .4 INCHES.
&&
TGRPRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GRAND JUNCTION CO
353 PM MST MON JAN 2 2023
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0353 PM HEAVY SNOW RED MOUNTAIN PASS 37.90N 107.71W
01/02/2023 M12.0 INCH OURAY CO DEPT OF HIGHWAYS
1.4 INCHES SWE.
&&
TGRPRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GRAND JUNCTION CO
355 PM MST MON JAN 2 2023
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0353 PM HEAVY SNOW MOLAS PASS 37.74N 107.70W
01/02/2023 M13.0 INCH SAN JUAN CO DEPT OF HIGHWAYS
1.0 INCH SWE.
&&
TGRPRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GRAND JUNCTION CO
356 PM MST MON JAN 2 2023
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0356 PM HEAVY SNOW COAL BANK PASS 37.70N 107.78W
01/02/2023 M15.0 INCH SAN JUAN CO DEPT OF HIGHWAYS
1.6 INCHES SWE.
&&
TGRThe national radar mosaic for the moment the first event began.
5 winter weather, 3 heavy snow. Local standard time, as filed.
Generally 10 to 20 inches of snow fell across the area.
Generally 5 to 10 inches of snow fell across the area.
Generally 4 to 8 inches of snow fell across the area.
Generally 3 to 7 inches of snow fell across the area.
Generally 5 to 10 inches of snow fell across the area.
Generally 5 to 10 inches of snow fell across the area.
Generally 4 to 6 inches of snow fell across the area.
Generally 5 to 10 inches of snow fell across the area with locally higher amounts.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Colorado in 2023Every state in 2023This day in weather historyWarnings in Colorado, January 2023
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: 1062907, 1062909, 1062903, 1062908, 1062905, 1062906, 1062904, 1062902.