A slow moving Pacific low pressure system interacted with a stationary front and moist upslope flow over southeast Wyoming.  Significant snow accumulations occurred with 6 to 18 inches over lower elevations and two to three feet over the mountains.  Gusty north to northeast winds of 25 to 35 mph combined with the falling snow, which produced considerable blowing and drifting snow.  Numerous highways, including Interstates 25 and 80 were closed due to very low visibilities and icy, snow-packed surfaces.

Winter Storm in CONVERSE COUNTY LOWER ELEVATIONS, WYOMING
From 16-APR-13 00:00:00 to 17-APR-13 19:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

An observer three miles east of Douglas measured 13.5 inches of snow.

Winter Storm in CONVERSE COUNTY LOWER ELEVATIONS, WYOMING
From 16-APR-13 00:00:00 to 17-APR-13 19:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

An observer 12 miles northwest of Lost Springs measured 15 inches of snow.

Winter Storm in CONVERSE COUNTY LOWER ELEVATIONS, WYOMING
From 16-APR-13 00:00:00 to 17-APR-13 19:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

An observer one mile southwest of Glenrock measured ten inches of snow.

Winter Storm in NIOBRARA COUNTY, WYOMING
From 16-APR-13 00:00:00 to 17-APR-13 19:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

An observer in Mule Creek Junction measured 11 inches of snow.

Winter Storm in NIOBRARA COUNTY, WYOMING
From 16-APR-13 00:00:00 to 17-APR-13 19:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

An observer in Lance Creek measured a foot of snow with two to three foot drifts.

Winter Storm in CENTRAL LARAMIE COUNTY, WYOMING
From 15-APR-13 12:00:00 to 17-APR-13 19:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

An observer one mile north of Cheyenne measured 18 inches of snow.

Winter Storm in CENTRAL LARAMIE COUNTY, WYOMING
From 15-APR-13 12:00:00 to 17-APR-13 19:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

The NWSFO in Cheyenne measured 17.9 inches of snow.

Winter Storm in CENTRAL LARAMIE COUNTY, WYOMING
From 15-APR-13 12:00:00 to 17-APR-13 19:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

An observer 11 miles north-northwest of Cheyenne measured 18.6 inches of snow.

Winter Storm in CENTRAL LARAMIE COUNTY, WYOMING
From 15-APR-13 12:00:00 to 17-APR-13 19:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

An observer 31 miles north of Cheyenne measured 18 inches of snow.

Winter Storm in EAST LARAMIE COUNTY, WYOMING
From 15-APR-13 12:00:00 to 17-APR-13 19:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

An observer in Pine Bluffs measured eight inches of snow.

Winter Storm in SOUTH LARAMIE RANGE, WYOMING
From 15-APR-13 05:00:00 to 17-APR-13 19:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

An observer four miles southeast of Buford measured 13.5 inches of snow.

Winter Storm in CENTRAL LARAMIE COUNTY, WYOMING
From 15-APR-13 12:00:00 to 17-APR-13 19:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

An observer six miles west-southwest of Burns measured 17.9 inches of snow.

Winter Storm in GOSHEN COUNTY, WYOMING
From 15-APR-13 15:00:00 to 17-APR-13 19:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

An observer three miles west of Veteran measured 14 inches of snow.

Winter Storm in EAST PLATTE COUNTY, WYOMING
From 15-APR-13 15:00:00 to 17-APR-13 19:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

An observer in Chugwater measured a foot of snow.

Winter Storm in CENTRAL LARAMIE RANGE AND SOUTHWEST PLATTE COUNTY, WYOMING
From 15-APR-13 12:00:00 to 17-APR-13 19:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

An observer at the Sybille Research Center measured 16 inches of snow.

Winter Storm in CONVERSE COUNTY LOWER ELEVATIONS, WYOMING
From 16-APR-13 00:00:00 to 17-APR-13 19:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

An observer 21 miles north-northeast of Rolling Hills Estates measured 11 inches of snow.

Winter Storm in FERRIS/SEMINOE/SHIRLEY MOUNTAINS, WYOMING
From 16-APR-13 06:00:00 to 17-APR-13 19:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

An observer at the Seminoe Dam measured eight inches of snow.

Winter Storm in SHIRLEY BASIN, WYOMING
From 16-APR-13 00:00:00 to 17-APR-13 19:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

An observer in Medicine Bow measured a foot of snow with five foot drifts.

Winter Storm in SHIRLEY BASIN, WYOMING
From 16-APR-13 00:00:00 to 17-APR-13 19:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

An observer at Shirley Basin measured 11 inches of snow.

Winter Storm in CENTRAL LARAMIE COUNTY, WYOMING
From 15-APR-13 12:00:00 to 17-APR-13 19:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

An observer two miles east of Cheyenne measured 11 inches of snow.

Winter Storm in SHIRLEY BASIN, WYOMING
From 16-APR-13 00:00:00 to 17-APR-13 19:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

An observer 34 miles northeast of Hanna measured 16.5 inches of snow.

Winter Storm in NORTH LARAMIE RANGE, WYOMING
From 15-APR-13 05:00:00 to 17-APR-13 19:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A spotter 33 miles northwest of Wheatland measured two feet of snow.

Winter Storm in FERRIS/SEMINOE/SHIRLEY MOUNTAINS, WYOMING
From 16-APR-13 06:00:00 to 17-APR-13 19:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Six to eight inches of snow was estimated in Muddy Gap.

Winter Storm in CENTRAL LARAMIE RANGE AND SOUTHWEST PLATTE COUNTY, WYOMING
From 15-APR-13 12:00:00 to 17-APR-13 19:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

An observer eight miles southwest of Wheatland estimated 20 inches of snow.

Winter Storm in EAST PLATTE COUNTY, WYOMING
From 15-APR-13 15:00:00 to 17-APR-13 19:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

An observer 12 miles south-southwest of Glendo measured 8.5 inches of snow.

Winter Storm in EAST PLATTE COUNTY, WYOMING
From 15-APR-13 15:00:00 to 17-APR-13 19:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

An observer five miles south of Guernsey measured 15 inches of snow.

Winter Storm in EAST PLATTE COUNTY, WYOMING
From 15-APR-13 15:00:00 to 17-APR-13 19:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

An observer two miles south of Glendo measured 8.5 inches of snow.

Winter Storm in EAST PLATTE COUNTY, WYOMING
From 15-APR-13 15:00:00 to 17-APR-13 19:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

An observer three miles south-southeast of Guernsey measured 11 inches of snow.

Winter Storm in GOSHEN COUNTY, WYOMING
From 15-APR-13 15:00:00 to 17-APR-13 19:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

An observer in Torrington measured nine inches of snow.

Winter Storm in GOSHEN COUNTY, WYOMING
From 15-APR-13 15:00:00 to 17-APR-13 19:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

An observer 29 miles north of Torrington measured ten inches of snow with two to three foot drifts.

Winter Storm in GOSHEN COUNTY, WYOMING
From 15-APR-13 15:00:00 to 17-APR-13 19:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

An observer in Fort Laramie measured 9.5 inches of snow.

Winter Storm in GOSHEN COUNTY, WYOMING
From 15-APR-13 15:00:00 to 17-APR-13 19:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

An observer six miles south-southeast of Yoder measured a foot of snow.

Winter Storm in CENTRAL CARBON COUNTY, WYOMING
From 16-APR-13 12:00:00 to 17-APR-13 19:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

An observer in Rawlins measured six inches of snow.

Winter Storm in NORTH SNOWY RANGE FOOTHILLS, WYOMING
From 15-APR-13 12:00:00 to 17-APR-13 19:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

An observer 9.6 miles west-southwest of Rock River measured 12.5 inches of snow.

Winter Storm in CENTRAL CARBON COUNTY, WYOMING
From 16-APR-13 12:00:00 to 17-APR-13 19:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

An observer in Sinclair measured 10.5 inches of snow.

Winter Storm in EAST PLATTE COUNTY, WYOMING
From 15-APR-13 15:00:00 to 17-APR-13 19:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

An observer in Chugwater measured 14 inches of snow.

Winter Storm in SIERRA MADRE RANGE, WYOMING
From 15-APR-13 05:00:00 to 17-APR-13 19:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: SNOTEL

The Divide Peak SNOTEL site (elevation 8880 ft) estimated 26 inches of snow.

Winter Storm in SOUTHWEST CARBON COUNTY, WYOMING
From 15-APR-13 12:00:00 to 17-APR-13 19:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

An observer in Baggs measured six inches of snow.

Winter Storm in UPPER NORTH PLATTE RIVER BASIN, WYOMING
From 15-APR-13 18:00:00 to 17-APR-13 19:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

An observer in Saratoga measured eight inches of snow.

Winter Storm in LARAMIE VALLEY, WYOMING
From 15-APR-13 12:00:00 to 17-APR-13 19:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

An observer 17 miles west-northwest of Laramie measured 22 inches of snow.

Winter Storm in LARAMIE VALLEY, WYOMING
From 15-APR-13 12:00:00 to 17-APR-13 19:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

An observer 19 miles west-southwest of Laramie measured eight inches of snow.

Winter Storm in UPPER NORTH PLATTE RIVER BASIN, WYOMING
From 15-APR-13 18:00:00 to 17-APR-13 19:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

An observer two miles north-northeast of Encampment measured 15 inches of snow.

Winter Storm in EAST LARAMIE COUNTY, WYOMING
From 15-APR-13 12:00:00 to 17-APR-13 19:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

An observer three miles north-northeast of Carpenter measured 15 inches of snow.

Winter Storm in CENTRAL LARAMIE RANGE AND SOUTHWEST PLATTE COUNTY, WYOMING
From 15-APR-13 12:00:00 to 17-APR-13 19:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

An observer 20 miles southwest of Wheatland measured 14 inches of snow.

Winter Storm in SIERRA MADRE RANGE, WYOMING
From 15-APR-13 05:00:00 to 17-APR-13 19:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: SNOTEL

The Battle Mountain SNOTEL site (elevation 7440 ft) estimated 12 inches of snow.

Winter Storm in SIERRA MADRE RANGE, WYOMING
From 15-APR-13 05:00:00 to 17-APR-13 19:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: SNOTEL

The Sandstone Ranger Station SNOTEL site (elevation 8150 ft) estimated 26 inches of snow.

Winter Storm in SIERRA MADRE RANGE, WYOMING
From 15-APR-13 05:00:00 to 17-APR-13 19:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: SNOTEL

The Old Battle SNOTEL site (elevation 10000 ft) estimated 34 inches of snow.

Winter Storm in SIERRA MADRE RANGE, WYOMING
From 15-APR-13 05:00:00 to 17-APR-13 19:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: SNOTEL

The Webber Springs SNOTEL site (elevation 9250 ft) estimated 36 inches of snow.

Winter Storm in SOUTH LARAMIE RANGE FOOTHILLS, WYOMING
From 15-APR-13 12:00:00 to 17-APR-13 19:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

An observer 20 miles west-southwest of FE Warren AFB measured 22 inches of snow.

Winter Storm in SIERRA MADRE RANGE, WYOMING
From 15-APR-13 05:00:00 to 17-APR-13 19:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: SNOTEL

The Whiskey Park SNOTEL site (elevation 8950 ft) estimated 34 inches of snow.

Winter Storm in SIERRA MADRE RANGE, WYOMING
From 15-APR-13 05:00:00 to 17-APR-13 19:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: SNOTEL

The Blackhall Mountain SNOTEL site (elevation 9820 ft) estimated 36 inches of snow.

Winter Storm in SNOWY RANGE, WYOMING
From 15-APR-13 05:00:00 to 17-APR-13 19:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: SNOTEL

The South Brush Creek SNOTEL site (elevation 8440 ft) estimated 26 inches of snow.

Winter Storm in SNOWY RANGE, WYOMING
From 15-APR-13 05:00:00 to 17-APR-13 19:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: SNOTEL

The North French Creek SNOTEL site (elevation 10130 ft) estimated 26 inches of snow.

Winter Storm in SNOWY RANGE, WYOMING
From 15-APR-13 05:00:00 to 17-APR-13 19:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: SNOTEL

The Sand Lake SNOTEL site (elevation 10050 ft) estimated 26 inches of snow.

Winter Storm in SNOWY RANGE, WYOMING
From 15-APR-13 05:00:00 to 17-APR-13 19:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: SNOTEL

The Brooklyn Lake SNOTEL site (elevation 10240 ft) estimated 36 inches of snow.

Winter Storm in SOUTH LARAMIE RANGE, WYOMING
From 15-APR-13 05:00:00 to 17-APR-13 19:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: SNOTEL

The Crow Creek SNOTEL site (elevation 8330 ft) estimated 26 inches of snow.

Winter Storm in NORTH LARAMIE RANGE, WYOMING
From 15-APR-13 05:00:00 to 17-APR-13 19:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: SNOTEL

The Windy Peak SNOTEL site (elevation 7900 ft) estimated 32 inches of snow.

Winter Storm in NORTH LARAMIE RANGE, WYOMING
From 15-APR-13 05:00:00 to 17-APR-13 19:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: SNOTEL

The Laprele Creek SNOTEL site (elevation 8375 ft) estimated 20 inches of snow.

Winter Storm in NORTH LARAMIE RANGE, WYOMING
From 15-APR-13 05:00:00 to 17-APR-13 19:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: SNOTEL

The Reno Hill SNOTEL site (elevation 8400 ft) estimated 28 inches of snow.

Winter Storm in CONVERSE COUNTY LOWER ELEVATIONS, WYOMING
From 16-APR-13 00:00:00 to 17-APR-13 19:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

An observer four miles west-southwest of Douglas measured 16 inches of snow.