An area of low pressure moved out of the Great Basin and into northern Colorado and southern Wyoming February 8 through 10. Snow spread across much of southern and central Wyoming on the afternoon and evening of February 8 and continued in some areas until the morning of February 10. Snowfall rates of over 1 inch an hour were reported in association with some of the more intense snow. Areas to receive the heaviest snow were around Lander and on Casper Mountain. Snowfall topping one foot was commonplace around Casper with up to 21 inches on the nearby hillsides. Casper Mountain observed 16 inches with over 20 inches estimated at two SNOTEL stations. Southern portions of the Star Valley saw 8 to 15 inches of snow. Many other locations around Fremont County and on the south side of Casper reported over 6 inches of snow. The maximum across Sweetwater County was 9 inches of snow at Wamsutter.

Winter Storm in CASPER MOUNTAIN, WYOMING
From 09-FEB-13 09:00:00 to 10-FEB-13 12:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A trained spotter measured 16 inches of snow on Casper Mountain. Estimated snowfall at two SNOTEL stations topped 20 inches.

Winter Storm in SOUTH LINCOLN COUNTY, WYOMING
From 08-FEB-13 18:00:00 to 09-FEB-13 21:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Between 7 and 9 inches of snow was reported in Kemmerer. In addition, 8 inches of snow was measured in Cokeville.

Winter Storm in EAST SWEETWATER COUNTY, WYOMING
From 08-FEB-13 20:00:00 to 09-FEB-13 18:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A trained spotter measured 8 inches of snow at Wamsutter.

Winter Storm in GREEN MOUNTAINS & RATTLESNAKE RANGE, WYOMING
From 08-FEB-13 16:00:00 to 10-FEB-13 07:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A trained spotter measured 8 inches of snow in Jeffrey City.

Winter Storm in WIND RIVER BASIN, WYOMING
From 08-FEB-13 14:00:00 to 10-FEB-13 03:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Employee

Snowfall reports around Riverton ranged from 7 to 11 inches, with 6.9 inches of snow was measured at the National Weather Service Office west of Riverton with 7 inches reported in Hudson.

Winter Storm in UPPER WIND RIVER BASIN, WYOMING
From 08-FEB-13 20:00:00 to 09-FEB-13 17:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

A COOP observer measured 6 inches of snow in Dubois.

Winter Storm in STAR VALLEY, WYOMING
From 08-FEB-13 17:00:00 to 10-FEB-13 07:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A spotter reported 15 inches of snow in Smoot. Also, 8.4 inches of snow was measured in Afton.

Winter Storm in WIND RIVER MOUNTAINS EAST, WYOMING
From 08-FEB-13 14:00:00 to 10-FEB-13 13:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

The public reported over 12 inches of snow at some areas in Sinks Canyon State Park.

Winter Storm in LANDER FOOTHILLS, WYOMING
From 08-FEB-13 14:00:00 to 10-FEB-13 13:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

The National Weather Service Snow Spotter in Lander reported 15.8 inches of snow. There were many other reports of 12 to 16 inches of snow in Lander with a maximum of 21 inches in higher terrain southwest of town.

Winter Storm in NATRONA COUNTY LOWER ELEVATIONS, WYOMING
From 09-FEB-13 09:00:00 to 10-FEB-13 07:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: CoCoRaHS

A CoCoRaHS observer reported 6 inches of snow on the south side of Casper near Wyoming Boulevard.