One more widespread high wind event across southeast Wyoming to close out the year. High winds and blowing snow resulted in extended closures of Interstate 80 and 25 on the 30th. Maximum wind gust of 99 MPH was reported along Interstate 25 north of Wheatland. Additionally, winds were strong enough near Arlington to loft crystals from a 3 day old snowpack to create localized areas of reduced visibility in blowing snow.

High Wind in CONVERSE COUNTY LOWER ELEVATIONS, WYOMING
From 30-DEC-21 02:15:00 to 30-DEC-21 16:45:00 (MST-7)
Magnitude: 65.00 MG
Reported by: Mesonet

Multiple stations reported high winds including Douglas Airport ASOS station (KDGW) and WYDOT mesonet station Deer Creek (KDRC) along Interstate 25. CWOP mesonet station DW7426 Douglas measured maximum wind gust 5 miles west-southwest of Douglas at 11:56 AM MST on the 30th. Interstate 25 between Douglas and Casper was closed to light, high-profile vehicles for 16 hours.

High Wind in FERRIS/SEMINOE/SHIRLEY MOUNTAINS, WYOMING
From 30-DEC-21 02:50:00 to 30-DEC-21 13:50:00 (MST-7)
Magnitude: 71.00 MG
Reported by: RAWS

RAWS mesonet station Camp Creek (CAMW4) measured maximum wind gust 4 miles west of Muddy Gap at 9:50 AM MST.

High Wind in SHIRLEY BASIN, WYOMING
From 30-DEC-21 11:45:00 to 30-DEC-21 13:10:00 (MST-7)
Magnitude: 38.00 MS
Reported by: Mesonet

Union Pacific Railroad mesonet station MEDIC1 (UP087) measured sustained winds greater than 40 MPH for over an hour 2 miles east-southeast of Medicine Bow. Maximum wind gust of 57 MPH was measured during this period.

High Wind in CENTRAL LARAMIE RANGE AND SOUTHWEST PLATTE COUNTY, WYOMING
From 30-DEC-21 05:56:00 to 30-DEC-21 16:00:00 (MST-7)
Magnitude: 76.00 MG
Reported by: Department of Highways

WYDOT mesonet station Bordeaux (KBRX) along Interstate 25 measured maximum wind gust 9 miles south of Wheatland at 3:04 PM MST on the 30th. Interstate 25 between Cheyenne and Wheatland was closed to light, high-profile vehicles for 11 hours.

High Wind in EAST PLATTE COUNTY, WYOMING
From 30-DEC-21 00:00:00 to 30-DEC-21 14:50:00 (MST-7)
Magnitude: 86.00 MG
Reported by: Department of Highways

WYDOT mesonet station Coleman (WY1) along Interstate 25 measured maximum wind gust 13 miles south of Glendo at 2:12 PM MST on the 30th. Phifer Airfield in Wheatland (KEAN) and Camp Guernsey (KGUR) also reported high winds. Interstate 25 between Wheatland and Douglas was closed to light, high-profile vehicles for over 12 hours.

High Wind in GOSHEN COUNTY, WYOMING
From 30-DEC-21 10:45:00 to 30-DEC-21 11:15:00 (MST-7)
Magnitude: 55.00 MG
Reported by: ASOS

Torrington Airport ASOS station (KTOR) measured maximum wind gust.

High Wind in CENTRAL CARBON COUNTY, WYOMING
From 29-DEC-21 23:00:00 to 30-DEC-21 11:42:00 (MST-7)
Magnitude: 59.00 MG
Reported by: Mesonet

Union Pacific Railroad mesonet station COMO1 (UP164) measured maximum wind gust at 10:11 AM MST on the 30th. Rawlins Airport ASOS station (KRWL) also reported high winds with gusts to 62 MPH.

High Wind in NORTH SNOWY RANGE FOOTHILLS, WYOMING
From 29-DEC-21 20:04:00 to 30-DEC-21 17:24:00 (MST-7)
Magnitude: 71.00 MG
Reported by: Department of Highways

Multiple WYDOT mesonet stations reported high winds with gusts 65 to 75 MPH. WYDOT mesonet station Cooper Cove (WY24) along Interstate 80 measured maximum wind gust 7 miles east-southeast of Arlington at 1:44 PM MST on the 30th. Interstate 80 between Laramie and Rawlins was closed for an extended period of time.

High Wind in UPPER NORTH PLATTE RIVER BASIN, WYOMING
From 30-DEC-21 03:14:00 to 30-DEC-21 04:30:00 (MST-7)
Magnitude: 54.00 MG
Reported by: Department of Highways

WYDOT mesonet station Skyline (KSKL) along WY230 measured maximum wind gust 12 miles east-southeast of Encampment.

High Wind in LARAMIE VALLEY, WYOMING
From 30-DEC-21 05:57:00 to 30-DEC-21 10:42:00 (MST-7)
Magnitude: 70.00 MG
Reported by: Department of Highways

WYDOT mesonet station Quealy Dome (WY26) along Interstate 80 measured maximum wind gust 14 miles northeast of Centennial. Interstate 80 was closed west of Laramie for an extended period of time for high winds and blowing snow.

High Wind in SOUTH LARAMIE RANGE, WYOMING
From 30-DEC-21 06:18:00 to 30-DEC-21 18:08:00 (MST-7)
Magnitude: 72.00 MG
Reported by: Department of Highways

Multiple WYDOT and Union Pacific Railroad mesonet stations reported high winds with gusts 65 to 75 MPH. UPR mesonet station SHERWS (UP535) measured maximum wind gust 2 miles west-northwest of Buford at 10:07 AM MST on the 30th. Interstate 80 between Cheyenne and Laramie was closed for an extended period of time.

High Wind in SOUTH LARAMIE RANGE FOOTHILLS, WYOMING
From 30-DEC-21 12:32:00 to 30-DEC-21 14:42:00 (MST-7)
Magnitude: 63.00 MG
Reported by: Department of Highways

Multiple WYDOT mesonet stations reported high winds along Interstate 80 and 25 with gusts 60 to 70 MPH. WYDOT mesonet station Whitaker (KWTR) along Interstate 25 measured maximum wind gust 16 miles east of Horse Creek.

High Wind in CENTRAL LARAMIE COUNTY, WYOMING
From 30-DEC-21 07:18:00 to 30-DEC-21 12:53:00 (MST-7)
Magnitude: 61.00 MG
Reported by: Department of Highways

WYDOT mesonet station Bear Creek (WY40) along Interstate 25 measured maximum wind gust 8 miles south of Chugwater at 9:02 AM MST on the 30th. Cheyenne Airport ASOS station (KCYS) also reported high winds with gusts to 68 MPH.