A supercell thunderstorm developed during the late afternoon and produced an EF-1 tornado near Bosler, Wyoming and while it moved over the Laramie Range into the high plains of southeastern Wyoming produced another shortlived tornado over the open range rendering an EF-Unknown rating. In addition, numerous hail reports from this and other thunderstorms dropped up to golf ball size stones.

Tornado in ALBANY, WYOMING
From 06-JUL-19 17:10:00 to 06-JUL-19 17:19:00 (MST-7)
Location: BOSLER
Tornado F-scale: EF1
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

A supercell thunderstorm developed near the town of Rock River, Wyoming, in west-central Albany County.  At 606 PM MDT, the storm rapidly intensified as it moved southeast.  A tornado touched down and crossed Highway 30 south of Bosler, Wyoming at 610 PM MDT, and dissipated at 619 PM MDT.  The storm continued to show signs of rotation as it moved east-southeast toward the Laramie County line, however no additional tornadoes were reported.
A survey team from the National Weather Service in Cheyenne met with officials from Albany County to investigate storm damage in the Bosler area.  Eyewitness reports and snapped wooden power poles along County Road 51 indicated the initial tornado touched down in an open field about 2.5 miles west-southwest of Bosler, or 18.5 miles north-northwest of Laramie.  The tornado lifted for a short time but descended again and caused complete destruction of a pole barn near Highway 30 about three miles south-southeast of Bosler.  The tornado crossed Highway 30, confirmed by aerial photographs provided by the City of Laramie.  Large pieces of warped metal were blown several hundred yards to the east of the highway in a wide swath.  The damage footprint ended near the point of the original report.  Damage was consistent with an EF-1 tornado with maximum winds around 100 mph.

Hail in ALBANY, WYOMING
From 06-JUL-19 16:45:00 to 06-JUL-19 16:45:00 (MST-7)
Location: ROCK RIVER
Magnitude: 0.88 
Reported by: Public

Thunderstorm Wind in ALBANY, WYOMING
From 06-JUL-19 16:45:00 to 06-JUL-19 16:45:00 (MST-7)
Location: ROCK RIVER
Magnitude: 56.00 MG
Reported by: Mesonet

Winds measured at the Union Pacific Railroad Mesonet station RKRIVR.

Hail in ALBANY, WYOMING
From 06-JUL-19 17:51:00 to 06-JUL-19 17:51:00 (MST-7)
Location: HOWELL
Magnitude: 0.88 
Reported by: Amateur Radio

Hail in ALBANY, WYOMING
From 06-JUL-19 17:53:00 to 06-JUL-19 17:53:00 (MST-7)
Location: WEST LARAMIE
Magnitude: 1.00 
Reported by: Trained Spotter

Hail in ALBANY, WYOMING
From 06-JUL-19 17:57:00 to 06-JUL-19 17:57:00 (MST-7)
Location: LARAMIE
Magnitude: 1.25 
Reported by: Public

Photo sent in showing hail damage to car windshield.

Hail in ALBANY, WYOMING
From 06-JUL-19 17:58:00 to 06-JUL-19 17:58:00 (MST-7)
Location: LARAMIE
Magnitude: 0.88 
Reported by: Emergency Manager

Hail in ALBANY, WYOMING
From 06-JUL-19 17:58:00 to 06-JUL-19 17:58:00 (MST-7)
Location: LARAMIE
Magnitude: 1.75 
Reported by: Amateur Radio

Hail in ALBANY, WYOMING
From 06-JUL-19 17:58:00 to 06-JUL-19 17:58:00 (MST-7)
Location: LARAMIE
Magnitude: 1.75 
Reported by: Amateur Radio

Hail in ALBANY, WYOMING
From 06-JUL-19 17:59:00 to 06-JUL-19 17:59:00 (MST-7)
Location: LARAMIE
Magnitude: 1.00 
Reported by: Public

Hail in ALBANY, WYOMING
From 06-JUL-19 18:07:00 to 06-JUL-19 18:07:00 (MST-7)
Location: LARAMIE
Magnitude: 1.00 
Reported by: COOP Observer

Thunderstorm Wind in PLATTE, WYOMING
From 06-JUL-19 18:30:00 to 06-JUL-19 18:30:00 (MST-7)
Location: CHUGWATER
Magnitude: 52.00 EG
Reported by: Public

Winds were an estimation given that the resident was unable to get their front door open in addition to barely being able to remain standing.

Tornado in GOSHEN, WYOMING
From 06-JUL-19 18:49:00 to 06-JUL-19 18:58:00 (MST-7)
Location: MERS HILL
Tornado F-scale: EFU
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Storm Chaser

Video received via social media showed several brief spinups including the a fully condensed funnel making contact with the ground. No discernible damage to effectivly render any rating besides EF-U.

Hail in LARAMIE, WYOMING
From 06-JUL-19 19:51:00 to 06-JUL-19 19:51:00 (MST-7)
Location: GUN BARREL
Magnitude: 0.88 
Reported by: Trained Spotter

Thunderstorm Wind in LARAMIE, WYOMING
From 06-JUL-19 20:04:00 to 06-JUL-19 20:04:00 (MST-7)
Location: ALBIN
Magnitude: 52.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Fire Department/Rescue

Hail in ALBANY, WYOMING
From 06-JUL-19 16:42:00 to 06-JUL-19 16:42:00 (MST-7)
Location: ROCK RIVER
Magnitude: 1.25 
Reported by: CoCoRaHS

Hail in ALBANY, WYOMING
From 06-JUL-19 16:42:00 to 06-JUL-19 16:42:00 (MST-7)
Location: ROCK RIVER
Magnitude: 1.25 
Reported by: CoCoRaHS

Hail in ALBANY, WYOMING
From 06-JUL-19 17:50:00 to 06-JUL-19 17:50:00 (MST-7)
Location: LARAMIE
Magnitude: 1.25 
Reported by: CoCoRaHS