A strong cutoff upper level low across the central US began retrograding westward with wrap around moisture and strong winds leading to heavy snowfall and blizzard conditions, especially along the Pine and Cheyenne Ridges in eastern Wyoming. Snowfall totals along the western extent of the Pine Ridge reached 6 inches near Lusk with near-blizzard conditions. Further south in eastern Laramie County, strong winds gusting 50 to 60 mph led to low visibility and blizzard conditions with the heavy snowfall. Cheyenne observed a brief period of blizzard conditions early morning on the 26th while the Interstate 80 Summit between Cheyenne and Laramie observed blizzard conditions for an extend period of time.

Heavy Snow in CENTRAL LARAMIE COUNTY, WYOMING
From 25-DEC-23 23:30:00 to 26-DEC-23 18:45:00 (MST-7)
Crop damage: 0.00K
Reported by: Trained Spotter

Trained spotter reported 4 to 6 inches of snow 10 miles northeast of Cheyenne with near-blizzard conditions. Cheyenne Aiport ASOS station (KCYS) reported blizzard conditions with one-quarter mile visibility and 35 to 50 mph wind gusts for 90 minutes early in the morning on 12/26.

Blizzard in EAST LARAMIE COUNTY, WYOMING
From 25-DEC-23 23:36:00 to 26-DEC-23 04:02:00 (MST-7)
Crop damage: 0.00K
Reported by: AWOS

AWOS station Alpha (Burns) - K1AW reported one-quarter mile visibility in falling and blowing snow 9 miles south-southeast of Gun Barrel with wind gusts 50 to 55 mph. WYDOT station Gun Barrel (KGUN) along US Highway 85 also reported one-quarter mile visibility 7 miles south-southwest of Meriden with wind gusts 45 to 55 mph.

Blizzard in SOUTH LARAMIE RANGE, WYOMING
From 26-DEC-23 02:26:00 to 26-DEC-23 13:30:00 (MST-7)
Crop damage: 0.00K
Reported by: Department of Highways

WYDOT mesonet stations Summit East (WY28) located 11 southeast of Laramie and Vedauwoo (KVDW) along Interstate 80 in addition to Pumkin Vine (KPUM) along US Highway 287 located 3 miles southeast of Tie Siding reported one-quarter mile visibility in falling and blowing snow with winds gusting 45 to 50 mph.

High Wind in EAST PLATTE COUNTY, WYOMING
From 26-DEC-23 05:44:00 to 26-DEC-23 10:26:00 (MST-7)
Magnitude: 55.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Department of Highways

WYDOT mesonet station Coleman (WY1) along Interstate 25 measured maximum wind gust 13 miles south of Glendo.

High Wind in SOUTH LARAMIE RANGE FOOTHILLS, WYOMING
From 25-DEC-23 22:00:00 to 26-DEC-23 02:46:00 (MST-7)
Magnitude: 55.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Department of Highways

Numerous WYDOT and UPR mesonet stations reported high winds with gusts around 60 mph. WYDOT mesonet station Wyo Hill (KWYH) along Interstate 25 reported maximum wind gust 10 miles southwest of Cheyenne at 12:12 AM MST on 12/26.

High Wind in CENTRAL LARAMIE COUNTY, WYOMING
From 26-DEC-23 00:10:00 to 26-DEC-23 19:53:00 (MST-7)
Magnitude: 50.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

Cheyenne Airport ASOS station (KCYS) measured maximum wind gust.

Heavy Snow in NIOBRARA COUNTY, WYOMING
From 25-DEC-23 21:00:00 to 27-DEC-23 04:00:00 (MST-7)
Crop damage: 0.00K
Reported by: Emergency Manager

Emergency manager reported over 6 inches of snowfall with 20 to 25 mph winds causing areas of blowing and drifting snow.

High Wind in SOUTH LARAMIE RANGE, WYOMING
From 25-DEC-23 19:12:00 to 26-DEC-23 00:52:00 (MST-7)
Magnitude: 56.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Department of Highways

Numerous WYDOT mesonet stations along Interstate 80 reported wind gusts around 60 mph. WYDOT mesonet station Vedauwoo (KVDW) reported maximum wind gust at 10:32 PM MST on 12/25.