High winds developed across the wind prone areas of southeast Wyoming during the afternoon on December 4th, with winds becoming progressively more widespread overnight through the early afternoon on December 5th as a strong cold front tracked across the area. A hybrid gap and bora event resulted in numerous wind gusts 65-75 MPH. WYDOT reported numerous closures to light weight and high profile vehicles along Interstate 80 between Rawlins and Cheyenne and along Interstate 25 between Wheatland and the Colorado State Line.

High Wind in SHIRLEY BASIN, WYOMING
From 05-DEC-21 00:14:00 to 05-DEC-21 10:35:00 (MST-7)
Magnitude: 50.00 MG
Reported by: Mesonet

Sporadic wind gusts to 58 MPH were recorded by WYDOT/UPR sensors near Shirley Rim/Medicine Bow during the early morning hours on 12/5.

High Wind in CENTRAL CARBON COUNTY, WYOMING
From 05-DEC-21 02:00:00 to 05-DEC-21 10:53:00 (MST-7)
Magnitude: 53.00 MG
Reported by: Mesonet

Multiple sensors recorded wind gusts around 60 MPH in central Carbon County on the morning of 12/5. The peak wind gust was 61 MPH at Rawlins (KRWL) at 2:17 AM MST.

High Wind in LARAMIE VALLEY, WYOMING
From 05-DEC-21 00:44:00 to 05-DEC-21 13:53:00 (MST-7)
Magnitude: 66.00 MG
Reported by: ASOS

Multiple sensors including the Laramie Airport ASOS recorded frequent wind gusts 60-70 MPH. The peak wind gust was 76 MPH at KLAR at 8:02 AM MST.

High Wind in SOUTH LARAMIE RANGE, WYOMING
From 04-DEC-21 23:10:00 to 05-DEC-21 12:53:00 (MST-7)
Magnitude: 63.00 MG
Reported by: Mesonet

Multiple sensors recorded wind gusts 60-65 MPH over the southern Laramie Range including Interstate 80 between Laramie and Cheyenne. The peak wind gust was 72 MPH at the SHERWS UPR site at 10:23 PM MST on 12/4.

High Wind in SOUTH LARAMIE RANGE FOOTHILLS, WYOMING
From 05-DEC-21 01:22:00 to 05-DEC-21 12:17:00 (MST-7)
Magnitude: 60.00 MG
Reported by: Department of Highways

Multiple WYDOT sensors along Interstate 80 recorded wind gusts between 60-70 MPH. The peak wind gust was at Otto Road (WY38) at 69 MPH at 1:52 AM MST on 12/5.

High Wind in CENTRAL LARAMIE COUNTY, WYOMING
From 05-DEC-21 08:12:00 to 05-DEC-21 10:10:00 (MST-7)
Magnitude: 60.00 MG
Reported by: ASOS

Frequent wind gusts 60-70 MPH for approximately a two-hour period across central Laramie County including the city of Cheyenne. The peak wind gust was 69 MPH at the Cheyenne (KCYS) ASOS at 9:04 AM MST.

High Wind in CENTRAL LARAMIE RANGE AND SOUTHWEST PLATTE COUNTY, WYOMING
From 04-DEC-21 12:56:00 to 05-DEC-21 09:06:00 (MST-7)
Magnitude: 58.00 MG
Reported by: Department of Highways

Frequent wind gusts 60-70 MPH were observed along I-25 near Bordeaux (KBRX) between Chugwater and Wheatland. The peak wind gust was 67 MPH at 1:16 PM MST on 12/4. Interstate 25 was closed to light weight and high profile vehicles between Wheatland and Cheyenne from 1:02 PM MST on 12/4 to 12:36 PM on 12/5.

High Wind in NORTH SNOWY RANGE FOOTHILLS, WYOMING
From 04-DEC-21 16:44:00 to 05-DEC-21 14:04:00 (MST-7)
Magnitude: 74.00 MG
Reported by: Department of Highways

Multiple WYDOT sensors along I-80 between Laramie and Rawlins recorded frequent wind gusts 65-75 MPH. The peak wind gust was 85 MPH at Arlington (KARL) at 5:14 AM MST on 12/5. Interstate 80 was closed to light weight and high profile vehicles between Laramie and Rawlins from 10:24 AM MST on 12/4 to 3:22 PM MST on 12/5.

High Wind in FERRIS/SEMINOE/SHIRLEY MOUNTAINS, WYOMING
From 04-DEC-21 17:50:00 to 05-DEC-21 11:50:00 (MST-7)
Magnitude: 63.00 MG
Reported by: RAWS

Camp Creek RAWS (CAMW4) along the Carbon/Sweetwater county line recorded frequent wind gusts 60-70 MPH. Peak gust was 73 MPH at 8:50 PM MST on 12/4.

High Wind in CONVERSE COUNTY LOWER ELEVATIONS, WYOMING
From 04-DEC-21 20:54:00 to 04-DEC-21 21:02:00 (MST-7)
Magnitude: 50.00 MG
Reported by: Department of Highways

Highway sensor along I-25 at Deer Creek (KDRC) briefly measured wind gusts to 58 MPH.

High Wind in EAST PLATTE COUNTY, WYOMING
From 04-DEC-21 22:58:00 to 05-DEC-21 10:08:00 (MST-7)
Magnitude: 50.00 EG
Reported by: Mesonet

Wind gusts frequently ranged from 60-65 MPH along the Platte/Laramie County Line at Bear Creek along I-25 (WY40). Wind gusts 55-60 MPH occurred north of this point throughout eastern Platte County.

High Wind in GOSHEN COUNTY, WYOMING
From 05-DEC-21 01:15:00 to 05-DEC-21 02:35:00 (MST-7)
Magnitude: 50.00 EG
Reported by: Mesonet

Strong winds briefly spread across Goshen County with peak gusts 55-60 MPH near Torrington.