A long duration atmospheric river event resulted in moderate to heavy snow over the western Colorado mountains as well as some higher elevation valleys as several midlevel disturbances progressed through the region. Winds gusted from 40 to 50 MPH at times with up to 75 MPH above treeline in the San Juan Mountains.

Winter Storm in SOUTHWESTERN SAN JUAN MOUNTAINS, COLORADO
From 12-DEC-19 20:00:00 to 16-DEC-19 06:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: SNOTEL

Storm total snowfall of 10 to 20 inches with locally higher amounts up to 22 inches estimated by the Columbus Basin SNOTEL site. Winds gusted from 30 to 40 MPH with up to 75 MPH above treeline.

Winter Weather in CENTRAL COLORADO RIVER BASIN, COLORADO
From 14-DEC-19 11:30:00 to 14-DEC-19 15:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: CoCoRaHS

The slick, snowpacked roads impacted travel along Interstate 70 with up to 3 inches of snow reported by a CoCoRaHS observer near Wolcott.

Winter Weather in UPPER YAMPA RIVER BASIN, COLORADO
From 12-DEC-19 15:00:00 to 13-DEC-19 09:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: CoCoRaHS

Generally 5 to 7 inches of snow fell across the area in a little over 12 hours.

Winter Weather in UPPER YAMPA RIVER BASIN, COLORADO
From 13-DEC-19 21:00:00 to 15-DEC-19 09:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Generally 4 to 8 inches of snow fell across the area. Heavy snow fell on the 14th as visibility averaged one quarter of a mile for several hours.

Winter Weather in CENTRAL COLORADO RIVER BASIN, COLORADO
From 12-DEC-19 17:30:00 to 13-DEC-19 04:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: CoCoRaHS

Generally 3 to 6 inches of snow fell across the area in 12 hours.

Heavy Snow in FLATTOP MOUNTAINS, COLORADO
From 12-DEC-19 06:00:00 to 14-DEC-19 20:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: SNOTEL

Storm total snowfall of 8 to 16 inches with locally higher amounts up to 22 inches estimated by the Ripple Creek SNOTEL site.

Heavy Snow in ELKHEAD AND PARK MOUNTAINS, COLORADO
From 12-DEC-19 15:00:00 to 14-DEC-19 22:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: SNOTEL

Storm total snowfall of 1 to 2 feet with locally higher amounts up to 37 inches estimated by the Tower SNOTEL site.

Winter Storm in GORE AND ELK MOUNTAINS/CENTRAL MOUNTAIN VALLEYS, COLORADO
From 12-DEC-19 15:00:00 to 14-DEC-19 20:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: SNOTEL

Storm total snowfall of 8 to 16 inches with locally higher amounts up to 19 inches estimated by the Vail Mountain SNOTEL site. Winds gusted from 40 to 50 MPH at times.

Heavy Snow in WEST ELK AND SAWATCH MOUNTAINS, COLORADO
From 12-DEC-19 16:00:00 to 15-DEC-19 08:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: CoCoRaHS

Storm total snowfall of 10 to 20 inches with locally higher amounts up to 26 inches estimated by the Schofield Pass SNOTEL site.

Winter Storm in NORTHWESTERN SAN JUAN MOUNTAINS, COLORADO
From 12-DEC-19 20:00:00 to 16-DEC-19 06:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: SNOTEL

Storm total snowfall of 8 to 14 inches with locally higher amounts up to 17 inches reported at Telluride Ski Area. Winds gusted from 30 to 40 MPH with up to 75 MPH above treeline.