A strong low pressure system moved across the region producing packed gradient flow across the wind prone areas of southeastern Wyoming. Moisture associated with the system produced snowfall across the area especially the higher terrains of the Snowy and Sierra Madre Ranges.

Heavy Snow in SNOWY RANGE, WYOMING
From 03-NOV-18 01:00:00 to 05-NOV-18 02:00:00 (MST-7)
Reported by: SNOTEL

Medicine Bow site measured snow water equivalent of 2.1 inches and applying a twelve-to-one snow to liquid ratio brought estimated total snowfall value of 25.2 inches for a twenty hour accumulation period.

High Wind in SOUTH LARAMIE RANGE, WYOMING
From 04-NOV-18 14:00:00 to 04-NOV-18 18:00:00 (MST-7)
Magnitude: 60.00 MG
Reported by: Department of Highways

Sensor along Interstate 80 east of Buford measured the associated wind gust while a nearby Union Pacific Railroad weather sensor two miles west of Buford measured 69 mph at the same time.

High Wind in SOUTH LARAMIE RANGE FOOTHILLS, WYOMING
From 04-NOV-18 11:00:00 to 04-NOV-18 18:00:00 (MST-7)
Magnitude: 52.00 MG
Reported by: Mesonet

Union Pacific railroad site fourteen miles west-southwest of Cheyenne measured a wind gust of 60 mph. A nearby trained spotter two miles south-southwest of Federal measured a 60 mph wind gust as well.

High Wind in LARAMIE VALLEY, WYOMING
From 03-NOV-18 08:00:00 to 04-NOV-18 16:00:00 (MST-7)
Magnitude: 50.00 MG
Reported by: Mesonet

A Union Pacific Railroad sensor one mile south of Rock River measured the strong winds. Several nearby Wyoming Department of Transportation sensors along Interstate 80 measured wind gusts at 57 mph.

High Wind in CENTRAL LARAMIE RANGE AND SOUTHWEST PLATTE COUNTY, WYOMING
From 04-NOV-18 10:00:00 to 04-NOV-18 16:00:00 (MST-7)
Magnitude: 50.00 MG
Reported by: Department of Highways

Sensor along Interstate 25 nine miles south of Wheatland measured the high winds.

Winter Storm in NORTH SNOWY RANGE FOOTHILLS, WYOMING
From 04-NOV-18 17:00:00 to 05-NOV-18 01:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: CoCoRaHS

Observer two miles south of Elk Mountain reported heavy snow of four inches in under 12 hours with a nearby Wyoming Department of Transportation sensor along Interstate 80 near Cooper Cove measuring a 62 knot wind gust. Several other Wyoming Department of Transportation sites along the interstate had measured wind gusts in excess of 59 mph. Several webcams across the zone along the interstate had periods of visibility under half mile with traffic slowed to a crawl.

High Wind in NORTH SNOWY RANGE FOOTHILLS, WYOMING
From 04-NOV-18 06:00:00 to 04-NOV-18 16:00:00 (MST-7)
Magnitude: 62.00 MG
Reported by: Department of Highways

Sensor along Interstate 80 near Cooper Cove or seven miles east-southeast of Arlington measured the high wind gusts. Several other nearby Wyoming Department of Transportation sites along the interstate reported wind gusts in excess of 59 mph.

Heavy Snow in SIERRA MADRE RANGE, WYOMING
From 03-NOV-18 18:00:00 to 05-NOV-18 02:00:00 (MST-7)
Reported by: SNOTEL

Whiskey Park sensor at elevation of 8950 feet measured a snow water equivalent of 1.8 inches with a snow-to-liquid ration applied of 10 to 1. Estimated snow total accumulation of 18 inches in a period of 20 hours.