A combination of a cold front, a potent jet, and strong winds being mixed to the surface brought high winds to much of northern and central Wyoming. The highest wind speeds were near the foothills of the Absaroka Range, where wind gusts as high as 120 mph occurred to the west of Clark. These intense gusts downed a power line, which was responsible for igniting a wildfire in the Line Creek drainage north of Clark. The wildfire spread quickly and destroyed several structures and caused one death. Wind gusts to around 90 mph were reported in northern Johnson County downing power lines that sparked several small grass fires. Wind gusts over 58 mph were also reported in Fremont and Hot Springs counties.

High Wind in CODY FOOTHILLS, WYOMING
From 15-NOV-21 19:15:00 to 16-NOV-21 00:30:00 (MST-7)
Magnitude: 104.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Gap flow coupled with a mountain wave developed around Clark and brought extremely strong wind gusts for several hours on the evening of Monday, November 15. A maximum wind gust of 120 mph was reported to the west of Clark at 2100MST. A wind gust of 75 mph was measured at the Clark firehouse around midnight November 16.

High Wind in SOUTHEAST JOHNSON COUNTY, WYOMING
From 16-NOV-21 00:46:00 to 16-NOV-21 01:01:00 (MST-7)
Magnitude: 56.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

A peak wind gust of 65 mph was registered at a ranch near Mayoworth to the northwest of Kaycee near the foothills of the Bighorn Mountains.

High Wind in BIGHORN MOUNTAINS SOUTHEAST, WYOMING
From 16-NOV-21 00:47:00 to 16-NOV-21 01:47:00 (MST-7)
Magnitude: 66.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: RAWS

A maximum wind gust of 76 mph was recorded at the School House RAWS.

High Wind in OWL CREEK & BRIDGER MOUNTAINS, WYOMING
From 16-NOV-21 01:42:00 to 16-NOV-21 02:40:00 (MST-7)
Magnitude: 65.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: RAWS

The Grass Creek RAWS recorded a peak wind gust to 75 mph.

High Wind in WIND RIVER MOUNTAINS EAST, WYOMING
From 16-NOV-21 02:10:00 to 16-NOV-21 09:14:00 (MST-7)
Magnitude: 78.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Department of Highways

A maximum wind gust of 90 mph was reported by the wind sensor at Red Canyon. Wyoming Highway 28 over South Pass was closed for several hours as a result.

High Wind in LANDER FOOTHILLS, WYOMING
From 16-NOV-21 02:30:00 to 16-NOV-21 05:34:00 (MST-7)
Magnitude: 58.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

Downsloping wind produced a 67 mph gust at Hunt Field in Lander just prior to 0400MST. A mesonet station in the North Fork Popo Agie River drainage northwest of Lander recorded a peak gust of 58 mph.

High Wind in WIND RIVER BASIN, WYOMING
From 16-NOV-21 10:56:00 to 16-NOV-21 12:46:00 (MST-7)
Magnitude: 54.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

A 62 mph wind gust was reported at the Sharpnose RAWS. The ASOS at Central Wyoming Regional Airport in Riverton reported a peak gust to 58 mph.

Wildfire in CODY FOOTHILLS, WYOMING
From 15-NOV-21 22:15:00 to 16-NOV-21 12:00:00 (MST-7)
Property damage: 2.00M
Crop damage: 0.00K
Reported by: Law Enforcement

Very strong wind downed a power line into a tree igniting a wildfire around 2215MST Monday, November 15, in the Line Creek area north of Clark. The starting point appeared to be in the 800 block of County Road 1AB. The wildfire rapidly spread through the Line Creek drainage, mainly the north side of the creek, as well as the area around Gunpowder Road as westerly wind gusting between 60 and 80 mph drove the flames eastward. The blaze, which eventually burned at least 300 acres, destroyed three homes, seven outbuildings, and a bridge. The fire was also responsible for the death of a 61-year-old woman who succumbed to smoke inhalation on Tuesday, November 16. Firefighters responded from across northern Park County and southern Montana to get the fire under control. Evacuations occurred for Louis L'Amour Lane and Crossfire Trail.

High Wind in NORTHEAST JOHNSON COUNTY, WYOMING
From 16-NOV-21 04:30:00 to 16-NOV-21 06:35:00 (MST-7)
Magnitude: 80.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Very strong winds occurred in northern Johnson County. A wind sensor along I-90 near the Johnson-Sheridan county line recorded a maximum wind gust of 92 mph. The ASOS at Johnson County Airport near Buffalo registered a peak gust of 82 mph. The high winds downed several power lines that ignited small grass fires throughout the area.

High Wind in ABSAROKA MOUNTAINS, WYOMING
From 15-NOV-21 18:56:00 to 15-NOV-21 23:52:00 (MST-7)
Magnitude: 76.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

High wind blew for several hours along Wyoming Highway 296 over Chief Joseph Pass. A maximum wind gust of 88 mph was recorded shortly after 2200MST.