Sustained winds of 15 to 30 mph combined with temperatures of -10 to -35 degrees produced lowest wind chill temperatures of -30 to -60 degrees across portions of southeast Wyoming.

Extreme Cold/Wind Chill in CONVERSE COUNTY LOWER ELEVATIONS, WYOMING
From 17-DEC-16 00:00:00 to 18-DEC-16 09:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

Sustained winds of 20 to 25 mph combined with temperatures of -15 to -20 degrees produced lowest wind chill temperatures of -35 to -45 degrees.

Extreme Cold/Wind Chill in NIOBRARA COUNTY, WYOMING
From 17-DEC-16 00:00:00 to 18-DEC-16 09:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

Sustained winds of 20 to 25 mph combined with temperatures of -15 to -20 degrees produced lowest wind chill temperatures of -35 to -45 degrees.

Extreme Cold/Wind Chill in FERRIS/SEMINOE/SHIRLEY MOUNTAINS, WYOMING
From 17-DEC-16 00:00:00 to 18-DEC-16 09:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

Sustained winds of 20 to 25 mph combined with temperatures of -20 to -25 degrees produced lowest wind chill temperatures of -40 to -50 degrees.

Extreme Cold/Wind Chill in SHIRLEY BASIN, WYOMING
From 17-DEC-16 00:00:00 to 18-DEC-16 09:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

Sustained winds of 20 to 25 mph combined with temperatures of -30 to -35 degrees produced lowest wind chill temperatures of -50 to -60 degrees.

Extreme Cold/Wind Chill in NORTH LARAMIE RANGE, WYOMING
From 17-DEC-16 00:00:00 to 18-DEC-16 09:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

Sustained winds of 20 to 25 mph combined with temperatures of -20 to -30 degrees produced lowest wind chill temperatures of -45 to -55 degrees.

Extreme Cold/Wind Chill in GOSHEN COUNTY, WYOMING
From 17-DEC-16 00:00:00 to 18-DEC-16 09:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

Sustained winds of 15 to 20 mph combined with temperatures of -20 to -30 degrees produced lowest wind chill temperatures of -40 to -50 degrees.

Extreme Cold/Wind Chill in SNOWY RANGE, WYOMING
From 17-DEC-16 00:00:00 to 18-DEC-16 09:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

Sustained winds of 20 to 30 mph combined with temperatures of -15 to -25 degrees produced lowest wind chill temperatures of -40 to -50 degrees.

Extreme Cold/Wind Chill in SOUTH LARAMIE RANGE, WYOMING
From 17-DEC-16 00:00:00 to 18-DEC-16 09:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

Sustained winds of 20 to 30 mph combined with temperatures of -15 to -25 degrees produced lowest wind chill temperatures of -40 to -50 degrees.

Extreme Cold/Wind Chill in LARAMIE VALLEY, WYOMING
From 17-DEC-16 00:00:00 to 18-DEC-16 09:00:00 (MST-7)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

Sustained winds of 25 to 30 mph combined with temperatures of -10 to -15 degrees produced lowest wind chill temperatures of -35 to -45 degrees.