A potent area of low pressure developed in the Lee of the Colorado Rockies and brought heavy snow and strong wind to portions of western and central Wyoming. The hardest hit areas were Johnson, Natrona and Sweetwater Counties. The heaviest snow fell in Natrona County. Portions of Casper Mountain received over 2 feet of snow with the city of Casper getting anywhere from 9 to 18 inches. Across Sweetwater County, 6 to 10 inches of snow was common. The snow combined with winds gusting over 50 mph to bring sharply reduced visibility and the closure of many roads, including Interstates 25 and 80.

Winter Storm in SOUTHEAST JOHNSON COUNTY, WYOMING
From 13-MAR-19 08:00:00 to 14-MAR-19 06:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Heavy snow fell in portions of southeastern Johnson County. The highest amount measured was 6 inches near Linch. The snow combined with winds gusting past 50 mph at times to bring near whiteout conditions and cause the closure of Interstate 25.

Winter Storm in EAST SWEETWATER COUNTY, WYOMING
From 13-MAR-19 03:00:00 to 14-MAR-19 00:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A trained spotter reported 10 inches of snow in Wamsutter. The snow combined with winds gusting past 40 mph to cause the closure of Interstate 80 for several hours.

Winter Storm in NATRONA COUNTY LOWER ELEVATIONS, WYOMING
From 13-MAR-19 01:00:00 to 14-MAR-19 05:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Heavy snow fell through much of Natrona County. The highest snowfall amounts were closer to Casper Mountain where 12 to 18 inches of snow fell. The Casper Airport had 14.7 inches of new snow which was the ninth snowiest day on record. Snowfall amounts diminished to around 6 inches in the western and northern portions of the county. The snow combined with winds gusting over 40 mph and brought the closure of some roads.

Winter Storm in BIGHORN MOUNTAINS SOUTHEAST, WYOMING
From 13-MAR-19 07:00:00 to 14-MAR-19 06:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: SNOTEL

Heavy snow fell in portions of the Bighorn Range. At the Little Goose SNOTEL site, 17 inches of new snow fell.

Winter Storm in CASPER MOUNTAIN, WYOMING
From 13-MAR-19 00:00:00 to 14-MAR-19 06:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: SNOTEL

Very heavy snow fell on Casper Mountain. The highest amount was 26 inches at the Casper Mountain SNOTEL site.

Winter Storm in ROCK SPRINGS & GREEN RIVER, WYOMING
From 13-MAR-19 06:00:00 to 13-MAR-19 22:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Trained spotters reported anywhere from 5 to 8 inches across Rock Springs, amounts generally diminished further to the west. The snow combined with winds gusting over 40 mph to cause the closure of Interstate 80 for several hours.

Winter Storm in NORTHEAST JOHNSON COUNTY, WYOMING
From 13-MAR-19 08:00:00 to 14-MAR-19 04:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Department of Highways

A combination of periods of snow and winds gusting past 50 mph at times brought the closure of roads, including Interstates 25 and 90.