Widespread derecho moved through the area producing severe and significant wind gusts and causing damage to numerous outbuildings and sheds. A QLCS tornado developed over the Snowy Range along this line of storms producing mostly tree damage that was rated EF-1.

Thunderstorm Wind in CARBON, WYOMING
From 06-JUN-20 13:00:00 to 06-JUN-20 13:00:00 (MST-7)
Location: ENCAMPMENT
Magnitude: 56.00 EG
Reported by: Emergency Manager

Reported wind damage in Savery to several outbuildings and several cottonwood trees were blown over. Time estimated off of radar.

Thunderstorm Wind in CARBON, WYOMING
From 06-JUN-20 13:43:00 to 06-JUN-20 13:43:00 (MST-7)
Location: RAWLINS
Magnitude: 59.00 MG
Reported by: RAWS

RAWS mesonet station COWW4 - Cow Creek reported gust 21 miles north-northeast of Baggs.

Thunderstorm Wind in CARBON, WYOMING
From 06-JUN-20 13:46:00 to 06-JUN-20 13:46:00 (MST-7)
Location: RIVERSIDE
Magnitude: 54.00 MG
Reported by: Department of Highways

WYDOT mesonet station KSKL - Skyline reported wind gust along WY 230.

Thunderstorm Wind in CARBON, WYOMING
From 06-JUN-20 13:52:00 to 06-JUN-20 13:52:00 (MST-7)
Location: COYOTE SPRINGS
Magnitude: 51.00 MG
Reported by: Department of Highways

WYDOT mesonet station WY15 - Walcott Junction along I-80 reported wind gust 15 miles east of Sinclair.

Thunderstorm Wind in CARBON, WYOMING
From 06-JUN-20 13:56:00 to 06-JUN-20 13:56:00 (MST-7)
Location: DANA RIDGE
Magnitude: 56.00 MG
Reported by: Department of Highways

WYDOT mesonet station WY16 - Dana Ridge along I-80 reported wind gust.

Thunderstorm Wind in CARBON, WYOMING
From 06-JUN-20 14:06:00 to 06-JUN-20 14:06:00 (MST-7)
Location: ELK MOUNTAIN
Magnitude: 57.00 MG
Reported by: Department of Highways

WYDOT mesonet station WY19 - Elk Mountain along I-80 reported wind gust.

Thunderstorm Wind in CARBON, WYOMING
From 06-JUN-20 14:12:00 to 06-JUN-20 14:12:00 (MST-7)
Location: ARLINGTON
Magnitude: 67.00 MG
Reported by: Department of Highways

WYDOT mesonet station KARL - Arlington along I-80 reported wind gust.

Thunderstorm Wind in CONVERSE, WYOMING
From 06-JUN-20 15:13:00 to 06-JUN-20 15:13:00 (MST-7)
Location: GLENROCK
Magnitude: 52.00 MG
Reported by: Department of Highways

WYDOT mesonet station KDRC - Deer Creek along I-25 reported wind gust.

Thunderstorm Wind in LARAMIE, WYOMING
From 06-JUN-20 15:16:00 to 06-JUN-20 15:16:00 (MST-7)
Location: SPEER
Magnitude: 56.00 MG
Reported by: Department of Highways

WYDOT mesonet station KWYH - Wyo Hill along I-25 reported wind gust.

Thunderstorm Wind in LARAMIE, WYOMING
From 06-JUN-20 15:19:00 to 06-JUN-20 15:19:00 (MST-7)
Location: ARCHER
Magnitude: 59.00 MG
Reported by: Mesonet

Mesonet station CW2749 Cheyenne near the I-80 Archer exit reported gust.

Thunderstorm Wind in LARAMIE, WYOMING
From 06-JUN-20 15:23:00 to 06-JUN-20 15:23:00 (MST-7)
Location: ARCHER
Magnitude: 61.00 EG
Reported by: Trained Spotter

Estimated 65-70 MPH winds 8 miles east of Cheyenne.

Thunderstorm Wind in LARAMIE, WYOMING
From 06-JUN-20 15:25:00 to 06-JUN-20 15:25:00 (MST-7)
Location: ARCHER
Magnitude: 52.00 MG
Reported by: Mesonet

Union Pacific Railroad mesonet station UP166 near 8 miles east of Cheyenne reported gust.

Thunderstorm Wind in LARAMIE, WYOMING
From 06-JUN-20 15:28:00 to 06-JUN-20 15:28:00 (MST-7)
Location: ARCHER
Magnitude: 59.00 MG
Reported by: Public

Thunderstorm Wind in LARAMIE, WYOMING
From 06-JUN-20 15:30:00 to 06-JUN-20 15:30:00 (MST-7)
Location: ARCHER
Magnitude: 59.00 MG
Reported by: Department of Highways

WYDOT mesonet station WY46 - Cheyenne East along I-80 reported wind gust.

Thunderstorm Wind in PLATTE, WYOMING
From 06-JUN-20 15:32:00 to 06-JUN-20 15:32:00 (MST-7)
Location: FERGUSON CORNER
Magnitude: 50.00 MG
Reported by: Department of Highways

WYDOT mesonet station KBRX - Bordeaux along I-25 reported wind gust.

Thunderstorm Wind in CONVERSE, WYOMING
From 06-JUN-20 15:35:00 to 06-JUN-20 15:35:00 (MST-7)
Location: (DGW)CONVERSE COUNTY AIRPORT
Magnitude: 62.00 MG
Reported by: ASOS

KDGW - Douglas, Converse County Airport reported wind gust.

Thunderstorm Wind in PLATTE, WYOMING
From 06-JUN-20 15:40:00 to 06-JUN-20 15:40:00 (MST-7)
Location: DWYER JUNCTION
Magnitude: 69.00 MG
Reported by: Department of Highways

WYDOT mesonet station WY1 - Coleman along I-25 reported wind gust.

Thunderstorm Wind in CONVERSE, WYOMING
From 06-JUN-20 15:52:00 to 06-JUN-20 15:52:00 (MST-7)
Location: ESTERBROOK
Magnitude: 56.00 MG
Reported by: RAWS

RAWS station ESTW4 - Esterbrook reported wind gust 23 miles south of Douglas in the North Laramie Range.

Thunderstorm Wind in LARAMIE, WYOMING
From 06-JUN-20 15:52:00 to 06-JUN-20 15:52:00 (MST-7)
Location: GUN BARREL
Magnitude: 59.00 MG
Reported by: Department of Highways

WYDOT mesonet station KGUN - Gun Barrel along US 85 reported wind gust.

Thunderstorm Wind in LARAMIE, WYOMING
From 06-JUN-20 15:55:00 to 06-JUN-20 15:55:00 (MST-7)
Location: (82V)PINE BLUFFS AIRPORT
Magnitude: 58.00 MG
Reported by: AWOS

K82V - Pine Bluffs Municipal Airport reported wind gust.

Thunderstorm Wind in LARAMIE, WYOMING
From 06-JUN-20 16:16:00 to 06-JUN-20 16:16:00 (MST-7)
Location: GUN BARREL
Magnitude: 53.00 MG
Reported by: Department of Highways

WYDOT mesonet station KGUN - Gun Barrel along US 85 reported wind gust.

Thunderstorm Wind in GOSHEN, WYOMING
From 06-JUN-20 16:26:00 to 06-JUN-20 16:26:00 (MST-7)
Location: FONDA
Magnitude: 64.00 MG
Reported by: Emergency Manager

Thunderstorm Wind in GOSHEN, WYOMING
From 06-JUN-20 16:27:00 to 06-JUN-20 16:27:00 (MST-7)
Location: YODER
Magnitude: 52.00 MG
Reported by: Emergency Manager

Thunderstorm Wind in GOSHEN, WYOMING
From 06-JUN-20 16:27:00 to 06-JUN-20 16:27:00 (MST-7)
Location: TORRINGTON
Magnitude: 56.00 EG
Reported by: Public

Power outage with trees blown down reported in Torrington from wind gusts.

Thunderstorm Wind in GOSHEN, WYOMING
From 06-JUN-20 16:40:00 to 06-JUN-20 16:40:00 (MST-7)
Location: TORRINGTON
Magnitude: 56.00 EG
Reported by: Emergency Manager

Reports of metal dumpster being mangled from strong winds.

Thunderstorm Wind in CONVERSE, WYOMING
From 06-JUN-20 16:05:00 to 06-JUN-20 16:05:00 (MST-7)
Location: BILL
Magnitude: 64.00 MG
Reported by: RAWS

RAWS station RHKW4 - Rochelle Hills reported wind gust.

Thunderstorm Wind in NIOBRARA, WYOMING
From 06-JUN-20 16:34:00 to 06-JUN-20 16:34:00 (MST-7)
Location: RIVERVIEW
Magnitude: 67.00 MG
Reported by: Mesonet

Tornado in CARBON, WYOMING
From 06-JUN-20 13:51:00 to 06-JUN-20 13:57:00 (MST-7)
Location: TEN MILE
Tornado F-scale: EF1
Reported by: Public

A Quasi-Linear Convective System (QLCS) with an embedded supercell structure
developed across far SE Carbon County around 2:45pm on 6/6/2020, and moved
across western and northern portions of the Snowy Mountain Range. The overall
radar presentation of the co-located cyclonic rotation at the leading edge of
the reflectivity surge improved near 2:50-2:56pm per the radar scans from KCYS.
The first note of tree damage from the tornado occurred on Forest Service Road 115
(FS115) that ran west of the main Forest Service Road 100 (FS100) at an elevation
around 9200 feet. Sporadic softwood pine trees were uprooted along FS115 and fell to
the N/NW direction. The survey team continued north on FS100, and additional tree
branches and smaller pine trees were uprooted. Progressing farther north along FS100,
tree damage became more widespread and severe with degree of damage indicators increasing
as more snapped softwood pine trees were cataloged and noted. This portion of FS100
decreases in elevation and into a narrow localized valley along Turpin Creek to the north
and northwest. A vantage point at the south end of the valley, higher in elevation,
allowed for a landscape view towards the main tree damage path. This enhanced visual
perspective allowed the survey team to see east-northeast uprooted and bent
softwood pine trees. There were also snapped pine trees down the main center line of the damage path oriented to the north to north-northwest, and softwood pine trees to the east of the main centerline, converging back to the west to northwest. It was noted the greatest tree damage on the south to middle portions of the local Turpin Creek Valley. This damage was located along the west side of FS100, crossed FS100, with the greatest snapping to the East as one progressed farther north along FS100. This evidence indicated the tornado crossed FS100 in following the main snapping of tree damage along with the notable convergent pattern of tree fall. From the south side of the local Valley, tree damage extended at least 100-200 yards west of the road, with a wider damage swath noted to the east of FS100 as one progressed farther north. The damage swath of uprooted and snapped trees east of FS100 was approximately 200-300 yards from the road. The damage area narrowed substantially and became indiscernible as the team progressed north towards Bow River Campground near the intersection of FS100 and FS101. The end point was marked at the north end of a concentrated area of tree debris, small tree uprooting, and dislodged branches at an elevation around 9000 feet.
It should be noted that sporadic tree damage was also noted both southwest and northwest of the main track and the concentrated damage area. Sporadic softwood pine uprooting was noted along FS100 just north of HWY 130, but showed no conclusive evidence of a converging pattern. Likewise, FS105, FS120, and FS111 also had sporadic trees down, but once again, all trees fell in a northerly direction. The uniform direction suggested straight-line winds were the likely culprit of this tree damage.