A moist and strong southwesterly flow associated with an area of low pressure moving into the Four Corners region resulted in significant to heavy snowfall for most Colorado mountains and some of the higher elevation valleys.

Winter Weather in ROAN AND TAVAPUTS PLATEAUS, COLORADO
From 12-FEB-18 04:00:00 to 13-FEB-18 02:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Department of Highways

Snowfall amounts of 4 to 8 inches occurred across the area.  Highway 139 over Douglas Pass was slick and snowpacked.

Winter Weather in WEST ELK AND SAWATCH MOUNTAINS, COLORADO
From 12-FEB-18 04:00:00 to 13-FEB-18 14:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Snowfall totals ranged from 5 to 10 inches.  Locally higher amounts included 15 inches at the Schofield Pass SNOTEL site.

Winter Weather in GORE AND ELK MOUNTAINS/CENTRAL MOUNTAIN VALLEYS, COLORADO
From 12-FEB-18 04:00:00 to 13-FEB-18 13:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Snowfall totals ranged from 5 to 10 inches across the area.  Locally higher amounts included 12 inches at Snowmass Ski Resort.

Winter Storm in ANIMAS RIVER BASIN, COLORADO
From 11-FEB-18 22:00:00 to 12-FEB-18 17:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Snowfall totals ranged from 4 to 9 inches across the area with a peak measurement of 14 inches measured by a trained storm spotter located one mile east-northeast of Trimble.

Winter Weather in UNCOMPAHGRE PLATEAU AND DALLAS DIVIDE, COLORADO
From 12-FEB-18 04:00:00 to 13-FEB-18 15:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Snowfall totals generally ranged from 5 to 10 inches across the area.  Locally higher amounts included 13 inches at the Columbine Pass SNOTEL site.

Winter Weather in SAN JUAN RIVER BASIN, COLORADO
From 12-FEB-18 05:00:00 to 13-FEB-18 05:30:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: CoCoRaHS

Snowfall totals ranged from 5 to 10 inches across the area.

Winter Storm in FLATTOP MOUNTAINS, COLORADO
From 12-FEB-18 06:00:00 to 13-FEB-18 16:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: SNOTEL

Snowfall totals ranged from 9 to 18 inches across the area.

Winter Weather in ELKHEAD AND PARK MOUNTAINS, COLORADO
From 12-FEB-18 08:00:00 to 13-FEB-18 19:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Snowfall totals generally ranged from 7 to 14 inches across the area.

Winter Storm in DEBEQUE TO SILT CORRIDOR, COLORADO
From 12-FEB-18 00:00:00 to 12-FEB-18 20:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Snowfall totals ranged from 5 to 12 inches with up to 14 inches reported by the public south-southwest of Rifle. Travel was severely impacted along Interstate 70 with some road closures due to numerous accidents.

Winter Weather in UPPER YAMPA RIVER BASIN, COLORADO
From 12-FEB-18 02:00:00 to 13-FEB-18 04:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Snowfall totals ranged from 5 to 10 inches across the area.

Winter Storm in CENTRAL COLORADO RIVER BASIN, COLORADO
From 12-FEB-18 00:00:00 to 13-FEB-18 01:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: CoCoRaHS

Snowfall totals generally ranged from 5 to 10 inches across the area with up to 12 inches measured by a CoCoRaHs observer near Glenwood Springs.

Winter Storm in SOUTHWESTERN SAN JUAN MOUNTAINS, COLORADO
From 12-FEB-18 03:00:00 to 13-FEB-18 16:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Department of Highways

Widespread snowfall totals of 1 to 2 feet were measured across the area above the 9000 foot level. The Bear Town and Weminuche Creek SNOTEL sites both measured 25 inches.

Winter Weather in GRAND AND BATTLEMENT MESAS, COLORADO
From 12-FEB-18 03:00:00 to 13-FEB-18 15:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Snowfall totals generally ranged from 5 to 10 inches across the area, with locally higher amounts that included 17 inches at the Park Reservoir SNOTEL site.

Winter Weather in NORTHWESTERN SAN JUAN MOUNTAINS, COLORADO
From 12-FEB-18 03:00:00 to 12-FEB-18 21:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Department of Highways

Snowfall totals generally ranged from 6 to 12 inches across the area.  Locally higher amounts included 14 inches at the Slumgullion Pass SNOTEL site and 19 inches at a location one mile west of Red Mountain Pass.

Winter Weather in CENTRAL YAMPA RIVER BASIN, COLORADO
From 12-FEB-18 03:00:00 to 13-FEB-18 11:30:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Snowfall totals generally ranged from 2 to 5 inches across the area. Roads were slick and snowpacked, and Highway 40 near Hayden was closed for a while during the event.