A cold front brought an intense and widespread bora high wind event to a large portion of southeast Wyoming, along with localized enhanced gap flows in the wind prone areas including Arlington along Interstate 80 and Bordeaux along Interstate 25 through the day on the 15th. Wind gusts 65 to 85 MPH were common, with peak wind gusts as high as 94 MPH over the Southern Laramie Range.

High Wind in NIOBRARA COUNTY, WYOMING
From 15-DEC-21 11:08:00 to 15-DEC-21 15:02:00 (MST-7)
Magnitude: 57.00 MG
Reported by: Department of Highways

Wind gusts to 60+ MPH were frequently observed at WYDOT sensor WY60 (Van Tassel) along US Highway 20. The peak wind gust was 66 MPH at 1:16 PM MST on 12/15.

High Wind in CENTRAL LARAMIE RANGE AND SOUTHWEST PLATTE COUNTY, WYOMING
From 15-DEC-21 08:28:00 to 15-DEC-21 19:04:00 (MST-7)
Magnitude: 59.00 MG
Reported by: Department of Highways

Wind gusts 55-60 MPH were frequently observed at Bordeaux (KBRX) along I-25 between Chugwater and Wheatland. The peak wind gust was 68 MPH at 8:28 AM MST on 12/15.

High Wind in EAST PLATTE COUNTY, WYOMING
From 15-DEC-21 11:52:00 to 15-DEC-21 13:26:00 (MST-7)
Magnitude: 52.00 MG
Reported by: Department of Highways

Frequent wind gusts 55-60 MPH were observed along I-25 at Coleman (WY1) south of Glendo. The peak wind gust was 60 MPH at 12:52 PM MST on 12/15.

High Wind in GOSHEN COUNTY, WYOMING
From 15-DEC-21 11:10:00 to 15-DEC-21 13:27:00 (MST-7)
Magnitude: 60.00 MG
Reported by: ASOS

The Torrington Airport ASOS (KTOR) recorded frequent wind gusts around 58 MPH with a peak wind gust to 69 MPH at 11:11 AM MST on 12/15.

High Wind in CENTRAL CARBON COUNTY, WYOMING
From 14-DEC-21 22:00:00 to 14-DEC-21 22:02:00 (MST-7)
Magnitude: 51.00 MG
Reported by: ASOS

A brief wind gust to 59 MPH was observed at the Rawlins Airport (KRWL) late in the evening on 12/14.

High Wind in NORTH SNOWY RANGE FOOTHILLS, WYOMING
From 14-DEC-21 21:04:00 to 16-DEC-21 03:04:00 (MST-7)
Magnitude: 68.00 MG
Reported by: Department of Highways

Numerous WYDOT sensors along Interstate 80 between Laramie and Rawlins recorded frequent wind gusts ranging from 60-70+ MPH. The peak wind gust observed was 78 MPH at Arlington (KARL) at 6:44 PM MST on 12/15.

High Wind in LARAMIE VALLEY, WYOMING
From 15-DEC-21 07:32:00 to 15-DEC-21 12:38:00 (MST-7)
Magnitude: 79.00 MG
Reported by: Mesonet

Various mesonet sensors recorded 58+ MPH wind gusts with the Laramie Airport ASOS (KLAR) recording a 59 MPH gust at 7:32 AM MST on 12/15. A peak wind gust to 91 MPH occurred on the far western edge of the Laramie Valley along I-80 at Quealy Dome (WY26) at 11:06 AM MST on 12/15.

High Wind in SOUTH LARAMIE RANGE, WYOMING
From 15-DEC-21 08:19:00 to 16-DEC-21 01:49:00 (MST-7)
Magnitude: 81.00 MG
Reported by: Mesonet

Wind gusts 65-80 MPH were common near the Interstate 80 Summit between Laramie and Cheyenne. Multiple WYDOT and UPR sites also recorded wind gusts in excess of 80 MPH at times, with a peak wind gust to 93 MPH observed at UP535 (SHERWS) at 3:03 PM MST on 12/15.

High Wind in SOUTH LARAMIE RANGE FOOTHILLS, WYOMING
From 15-DEC-21 08:25:00 to 15-DEC-21 15:17:00 (MST-7)
Magnitude: 82.00 MG
Reported by: Mesonet

Multiple WYDOT and UPR sensors recorded frequent wind gusts ranging from 65-80 MPH. Locally higher gusts were observed, peaking at 94 MPH at UP226 (EMKAY) at 12:37 PM MST on 12/15.

High Wind in CENTRAL LARAMIE COUNTY, WYOMING
From 15-DEC-21 10:20:00 to 15-DEC-21 14:09:00 (MST-7)
Magnitude: 65.00 MG
Reported by: ASOS

Frequent wind gusts 60-75 MPH were observed across central Laramie County during the late morning and early afternoon hours on 12/15. The peak wind gust observed was 75 MPH at the Cheyenne Airport ASOS (KCYS) at 12:48 PM MST.

High Wind in EAST LARAMIE COUNTY, WYOMING
From 15-DEC-21 11:24:00 to 15-DEC-21 13:15:00 (MST-7)
Magnitude: 54.00 MG
Reported by: AWOS

Multiple mesonet sensors in eastern Laramie County reported a brief period of wind gusts 55-60 MPH. The peak wind gust was 62 MPH at the Pine Bluffs AWOS (K82V) at 1:15 PM MST.

Winter Weather in NORTH SNOWY RANGE FOOTHILLS, WYOMING
From 15-DEC-21 07:18:00 to 15-DEC-21 08:04:00 (MST-7)
Reported by: Department of Highways

WYDOT webcams showed whiteout conditions across portions of Interstate 80 with a passing snow squall. WYDOT mesonet station Arlington (KARL) along Interstate 80 recorded visibility below one-quarter mile with wind gusts 50 to 60 MPH.