A low pressure trough with an associated cold front pushed through western Colorado and produced moderate snow across the northern and central mountains and some valleys. Additionally, gusty winds occurred with winds exceeding 50 mph in the mountains at times and in excess of 40 mph in the valleys, resulting in reduced visibilities. Instability associated with the front led to stronger snow bands along portions of west-central Colorado. As a result, a long-lived snow squall impacted the I-70 corridor from Grand Junction east towards Vail as visibilities dropped to less than one quarter mile, also resulting in a 21 car pileup between DeBeque and Parachute and a 13 mile stretch of I-70 closed for much of the afternoon into the evening on 12/8.

Winter Weather in ELKHEAD AND PARK MOUNTAINS, COLORADO
From 07-DEC-23 11:00:00 to 09-DEC-23 13:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: SNOTEL

Generally 7 to 12 inches of snow fell across the area with locally higher amounts up to 15.4 inches at Rabbit Ears Pass. Sustained winds were above 20 mph with gusts above 45 mph and up to 57 mph at times during the first 8 hours of this event on 12/7 and below 40 mph afterwards.

Winter Weather in GRAND VALLEY, COLORADO
From 08-DEC-23 16:29:00 to 08-DEC-23 22:15:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

A snow squall moved through the area, dropping visibilities at the Grand Junction Regional Airport to half a mile or less as winds gusted above 30 mph peaking at 39 mph likely with the squall. Snowfall ranged from trace to 2 inches.

Winter Weather in CENTRAL COLORADO RIVER BASIN, COLORADO
From 07-DEC-23 22:59:00 to 08-DEC-23 15:03:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

Generally 2 to 4 inches fell across the area. Additionally, a snow squall moved through the area on 12/8, dropping visibilities at the Eagle County Regional Airport to a quarter of a mile as winds gusted above 30 mph peaking at 42 mph at No Name Tunnel sensor likely with the squall. Glenwood Canyon closed shortly after the squall due to an accident with numerous accidents in Silt, Glenwood and Carbondale with roads quickly becoming snow covered.

Winter Weather in DEBEQUE TO SILT CORRIDOR, COLORADO
From 07-DEC-23 21:22:00 to 08-DEC-23 14:06:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

Generally 2 to 4 inches of snow fell across the area. Additionally, a snow squall moved through the area on 12/8, dropping visibilities at the Rifle Garfield County Airport to a quarter of a mile as winds gusted above 30 mph at times throughout the storm. This snow squall resulted in a 21 car pileup along I-70 between DeBeque and Parachute, causing a 13 mile stretch of I-70 to be closed for much of the afternoon and evening.

Winter Weather in GORE AND ELK MOUNTAINS/CENTRAL MOUNTAIN VALLEYS, COLORADO
From 07-DEC-23 10:00:00 to 09-DEC-23 13:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: CoCoRaHS

Generally 4 to 8 inches fell across the area with locally higher amounts of 12.6 inches of snow at McCoy Park SNOTEL. Additionally, a snow squall moved through the area, dropping visibilities at the Aspen-Pitkin County Regional Airport to quarter of a mile as winds gusted above 25 mph as the tail end of the squall moved through. Vail picked up 6 to 8 inches of snow with a 4 inch per hour rate at Vail Ski area as the squall moved through.

Winter Weather in GRAND AND BATTLEMENT MESAS, COLORADO
From 07-DEC-23 12:00:00 to 09-DEC-23 10:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: CoCoRaHS

Generally 4 to 8 inches of snow fell across the area with locally higher amounts up to 12 inches at Cedaredge 10.5NNW (Grand Mesa Lodge).

Winter Weather in WEST ELK AND SAWATCH MOUNTAINS, COLORADO
From 07-DEC-23 19:00:00 to 09-DEC-23 12:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: CoCoRaHS

Generally 5 to 10 inches of snow fell across the area with locally higher amounts up to 14 inches at Schofield Pass. 9.5 inches was recorded at Crested Butte 6.2N. Winds gusted above 45 mph peaking between 50 and 60 mph at Irwin Ridge Top.

Winter Weather in FLATTOP MOUNTAINS, COLORADO
From 07-DEC-23 13:00:00 to 09-DEC-23 12:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: SNOTEL

Generally 6 to 12 inches of snow fell across the area. Sustained winds were in the 20 to 30 mph range with gusts up to 35 mph.