A very moist southwest flow preceded a large upper low which moved into the southwest states on the 24th.  Initially, precipitation was mostly in the form of rain at lower elevations, then changed to snow as colder air spread into the region.

Winter Storm in SOUTHWESTERN SAN JUAN MOUNTAINS, COLORADO
From 20-NOV-13 15:00:00 to 25-NOV-13 05:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Department of Highways

High-density snowfall totals of 1 to 3 feet were measured across the area.  Locally heavier amounts included 50 inches at the Weminuche Creek SNOTEL site. WInd gusts of 20 to 40 mph produced areas of blowing snow.

Heavy Snow in GRAND AND BATTLEMENT MESAS, COLORADO
From 20-NOV-13 19:00:00 to 24-NOV-13 21:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Department of Highways

High-density snowfall totals of 1 to 2 feet were measured across the area.  Locally heavier amounts included 29 inches at the Park Reservoir SNOTEL site.

Heavy Snow in UNCOMPAHGRE PLATEAU AND DALLAS DIVIDE, COLORADO
From 20-NOV-13 16:00:00 to 24-NOV-13 19:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

High-density snowfall totals of 1 to 2 feet were measured above the 8000 foot level, with 4 to 11 inches below.

Heavy Snow in GRAND VALLEY, COLORADO
From 22-NOV-13 17:00:00 to 23-NOV-13 07:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

High-density snowfall totals of 3 to 7 inches were measured across the area.

Heavy Snow in DEBEQUE TO SILT CORRIDOR, COLORADO
From 22-NOV-13 17:00:00 to 23-NOV-13 07:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: CoCoRaHS

High-density snowfall totals of 4 to 10 inches were measured across the area.

Heavy Snow in CENTRAL COLORADO RIVER BASIN, COLORADO
From 22-NOV-13 17:00:00 to 23-NOV-13 08:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: CoCoRaHS

High-density snowfall totals of 4 to 8 inches were measured across the area.

Winter Weather in GORE AND ELK MOUNTAINS/CENTRAL MOUNTAIN VALLEYS, COLORADO
From 21-NOV-13 08:00:00 to 24-NOV-13 20:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

High-density snowfall totals of 3 to 10 inches were measured across the area.  Numerous vehicle accidents in Vail and on Vail Pass resulted in the closure of I-70 for a period of time.

Winter Weather in FOUR CORNERS / UPPER DOLORES RIVER BASIN, COLORADO
From 23-NOV-13 19:00:00 to 24-NOV-13 23:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: CoCoRaHS

High-density snowfall totals of 2 to 3 inches were measured across the area.

Winter Weather in PARADOX VALLEY / LOWER DOLORES RIVER BASIN, COLORADO
From 24-NOV-13 09:00:00 to 25-NOV-13 00:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: CoCoRaHS

High-density snowfall totals of 3 to 4 inches were measured above the 6500 foot level.

Winter Weather in ROAN AND TAVAPUTS PLATEAUS, COLORADO
From 22-NOV-13 17:00:00 to 23-NOV-13 08:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Department of Highways

High-density snowfall totals of 5 to 6 inches were measured above the 7000 foot level.

Winter Weather in UPPER YAMPA RIVER BASIN, COLORADO
From 20-NOV-13 00:00:00 to 21-NOV-13 21:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: CoCoRaHS

High-density snowfall totals of 4 to 7 inches were measured across the area.

Winter Weather in FLATTOP MOUNTAINS, COLORADO
From 20-NOV-13 23:00:00 to 23-NOV-13 11:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

High-density snowfall totals of 5 to 12 inches were measured across the area.

Winter Weather in ELKHEAD AND PARK MOUNTAINS, COLORADO
From 20-NOV-13 23:00:00 to 22-NOV-13 08:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

High-density snowfall totals of 4 to 7 inches were measured across the area.

Winter Weather in CENTRAL YAMPA RIVER BASIN, COLORADO
From 21-NOV-13 02:00:00 to 21-NOV-13 20:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

High-density snowfall totals of 2 to 4 inches were measured across the area.

Winter Weather in UPPER GUNNISON RIVER VALLEY, COLORADO
From 21-NOV-13 00:00:00 to 22-NOV-13 15:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: CoCoRaHS

High-density snowfall totals of 3 to 4 inches were measured across the area.

Winter Weather in CENTRAL COLORADO RIVER BASIN, COLORADO
From 21-NOV-13 18:00:00 to 21-NOV-13 23:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: CoCoRaHS

High-density snowfall totals of 1 to 4 inches were measured across the area.

Winter Weather in CENTRAL GUNNISON AND UNCOMPAHGRE RIVER BASIN, COLORADO
From 22-NOV-13 10:00:00 to 23-NOV-13 04:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: CoCoRaHS

High-density snowfall totals of 1 to 5 inches were measured across the area.

Winter Weather in ANIMAS RIVER BASIN, COLORADO
From 23-NOV-13 13:00:00 to 24-NOV-13 20:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: CoCoRaHS

High-density snowfall totals of 3 to 5 inches were measured across the area.

Winter Weather in SAN JUAN RIVER BASIN, COLORADO
From 23-NOV-13 17:00:00 to 25-NOV-13 05:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: CoCoRaHS

High-density snowfall totals of 3 to 5 inches were measured across the area.

Winter Storm in NORTHWESTERN SAN JUAN MOUNTAINS, COLORADO
From 21-NOV-13 00:00:00 to 25-NOV-13 00:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Department of Highways

Four-day high-density snowfall totals of 10-20 inches were measured across the area.  Wind gusts of 20 to 35 mph produced areas of blowing snow.

Heavy Snow in WEST ELK AND SAWATCH MOUNTAINS, COLORADO
From 20-NOV-13 14:00:00 to 25-NOV-13 22:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

High-density snowfall totals of 10 to 20 inches were measured across the area.  Locally heavier amounts included 25 inches at Gothic and 28 inches at Schofield Pass and Irwin Lodge.