Intense afternoon and evening thunderstorms produced numerous reports of large hail and flash flooding throughout Laramie County in southeast Wyoming.

Hail in LARAMIE, WYOMING
From 12-JUL-11 16:31:00 to 12-JUL-11 16:31:00 (MST-7)
Location: (CYS)CHEYENNE AIRPORT
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Two broken windows.  A skylight was damaged at a house on 2nd Avenue.  Hail ranged from quarter to golf ball size.  Several roofs and awnings were damaged.

Flash Flood in LARAMIE, WYOMING
From 12-JUL-11 18:00:00 to 12-JUL-11 19:00:00 (MST-7)
Location: (CYS)CHEYENNE AIRPORT
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

More than six inches of water was observed near Carey Junior High School and adjacent East Pershing Avenue.  Hail covered the ground.  Traffic lights were inoperative.

Hail in LARAMIE, WYOMING
From 12-JUL-11 16:08:00 to 12-JUL-11 16:08:00 (MST-7)
Location: (CYS)CHEYENNE AIRPORT
Magnitude: 2.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Many vehicles were dented.  One vehicle sustained a damaged windshield.

Hail in LARAMIE, WYOMING
From 12-JUL-11 16:15:00 to 12-JUL-11 16:15:00 (MST-7)
Location: (CYS)CHEYENNE AIRPORT
Magnitude: 1.50 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Many vehicles were dented.  A roof was damaged.

Hail in LARAMIE, WYOMING
From 12-JUL-11 16:15:00 to 12-JUL-11 16:15:00 (MST-7)
Location: (CYS)CHEYENNE AIRPORT
Magnitude: 1.25 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in LARAMIE, WYOMING
From 12-JUL-11 16:25:00 to 12-JUL-11 16:25:00 (MST-7)
Location: (CYS)CHEYENNE AIRPORT
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in LARAMIE, WYOMING
From 12-JUL-11 16:28:00 to 12-JUL-11 16:28:00 (MST-7)
Location: (CYS)CHEYENNE AIRPORT
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in LARAMIE, WYOMING
From 12-JUL-11 16:30:00 to 12-JUL-11 16:30:00 (MST-7)
Location: (CYS)CHEYENNE AIRPORT
Magnitude: 1.25 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in LARAMIE, WYOMING
From 12-JUL-11 16:30:00 to 12-JUL-11 16:30:00 (MST-7)
Location: CHEYENNE
Magnitude: 1.25 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in LARAMIE, WYOMING
From 12-JUL-11 16:30:00 to 12-JUL-11 16:30:00 (MST-7)
Location: (CYS)CHEYENNE AIRPORT
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in LARAMIE, WYOMING
From 12-JUL-11 16:31:00 to 12-JUL-11 16:31:00 (MST-7)
Location: (CYS)CHEYENNE AIRPORT
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail broke vehicle windshields.

Hail in LARAMIE, WYOMING
From 12-JUL-11 16:33:00 to 12-JUL-11 16:33:00 (MST-7)
Location: (CYS)CHEYENNE AIRPORT
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Quarter to golf ball size hail was observed.

Hail in LARAMIE, WYOMING
From 12-JUL-11 16:35:00 to 12-JUL-11 16:35:00 (MST-7)
Location: (CYS)CHEYENNE AIRPORT
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Employee

Hail in LARAMIE, WYOMING
From 12-JUL-11 16:39:00 to 12-JUL-11 16:39:00 (MST-7)
Location: (CYS)CHEYENNE AIRPORT
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Employee

Hail in LARAMIE, WYOMING
From 12-JUL-11 16:39:00 to 12-JUL-11 16:39:00 (MST-7)
Location: (CYS)CHEYENNE AIRPORT
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: CoCoRaHS

Hail in LARAMIE, WYOMING
From 12-JUL-11 16:40:00 to 12-JUL-11 17:05:00 (MST-7)
Location: (CYS)CHEYENNE AIRPORT
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail lasted 25 minutes.

Flash Flood in LARAMIE, WYOMING
From 12-JUL-11 16:56:00 to 12-JUL-11 17:56:00 (MST-7)
Location: CHEYENNE
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Six inches of water flowing over the intersection of 19th Street and Carey Avenue in Cheyenne.

Hail in LARAMIE, WYOMING
From 12-JUL-11 18:19:00 to 12-JUL-11 18:19:00 (MST-7)
Location: (CYS)CHEYENNE AIRPORT
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in LARAMIE, WYOMING
From 12-JUL-11 16:40:00 to 12-JUL-11 16:40:00 (MST-7)
Location: (CYS)CHEYENNE AIRPORT
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in LARAMIE, WYOMING
From 12-JUL-11 16:45:00 to 12-JUL-11 16:45:00 (MST-7)
Location: (CYS)CHEYENNE AIRPORT
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Employee

Hail in LARAMIE, WYOMING
From 12-JUL-11 16:45:00 to 12-JUL-11 16:45:00 (MST-7)
Location: (CYS)CHEYENNE AIRPORT
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Employee

A vehicle's windshield was broken at FE Warren Air Force Base.

Hail in LARAMIE, WYOMING
From 12-JUL-11 16:48:00 to 12-JUL-11 16:48:00 (MST-7)
Location: (CYS)CHEYENNE AIRPORT
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in LARAMIE, WYOMING
From 12-JUL-11 16:50:00 to 12-JUL-11 16:50:00 (MST-7)
Location: ARCHER
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Flash Flood in LARAMIE, WYOMING
From 12-JUL-11 17:00:00 to 12-JUL-11 18:00:00 (MST-7)
Location: CHEYENNE
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Employee

Four to five feet of water was flowing across the Ames Avenue underpass.

Flash Flood in LARAMIE, WYOMING
From 12-JUL-11 17:30:00 to 12-JUL-11 18:30:00 (MST-7)
Location: ARCHER
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Water was flowing over Whitney Road approximately 6 to 8 inches deep and 15 feet wide.

Hail in LARAMIE, WYOMING
From 12-JUL-11 17:30:00 to 12-JUL-11 17:30:00 (MST-7)
Location: CAMP STOOL
Magnitude: 1.50 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Storm Chaser

Hail in LARAMIE, WYOMING
From 12-JUL-11 17:34:00 to 12-JUL-11 17:34:00 (MST-7)
Location: DURHAM
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Quarter size hail was observed just east of mile marker 375 on Interstate 80.

Heavy Rain in LARAMIE, WYOMING
From 12-JUL-11 17:35:00 to 12-JUL-11 17:35:00 (MST-7)
Location: ARCHER
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Two inches of rain was measured between 5 and 630 pm.

Hail in LARAMIE, WYOMING
From 12-JUL-11 17:36:00 to 12-JUL-11 17:36:00 (MST-7)
Location: DURHAM
Magnitude: 2.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Employee

Flash Flood in LARAMIE, WYOMING
From 12-JUL-11 17:36:00 to 12-JUL-11 18:36:00 (MST-7)
Location: ARCHER
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

More than six inches of water covered the intersection of East 4 Mile Road and Stagecoach Road.

Hail in LARAMIE, WYOMING
From 12-JUL-11 17:43:00 to 12-JUL-11 17:43:00 (MST-7)
Location: DURHAM
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in LARAMIE, WYOMING
From 12-JUL-11 17:56:00 to 12-JUL-11 17:56:00 (MST-7)
Location: CAMP STOOL
Magnitude: 1.25 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in LARAMIE, WYOMING
From 12-JUL-11 18:59:00 to 12-JUL-11 18:59:00 (MST-7)
Location: CARPENTER
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Flash Flood in LARAMIE, WYOMING
From 12-JUL-11 18:16:00 to 12-JUL-11 19:16:00 (MST-7)
Location: HILLSDALE
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Flooding over the access road between Interstate 80 mile markers 380 and 381, as well as the intersection of Highway 142 and the access raod.

Flash Flood in LARAMIE, WYOMING
From 12-JUL-11 20:39:00 to 12-JUL-11 21:39:00 (MST-7)
Location: CARPENTER
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

About six inches of swiftly flowing water over Carpenter Road from flooding in nearby farm fields.

Flash Flood in LARAMIE, WYOMING
From 12-JUL-11 23:15:00 to 13-JUL-11 00:15:00 (MST-7)
Location: (CYS)CHEYENNE AIRPORT
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Employee

Six inches of standing water was reported at the intersection of Evans and Pershing Avenue.

Heavy Rain in LARAMIE, WYOMING
From 13-JUL-11 07:00:00 to 13-JUL-11 07:00:00 (MST-7)
Location: CAMP STOOL
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

In a 24-hour period, 3.70 inches of rain was measured.

Heavy Rain in LARAMIE, WYOMING
From 12-JUL-11 17:09:00 to 12-JUL-11 17:09:00 (MST-7)
Location: ARCHER
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

One inch of rain was measured in 60 minutes.

Hail in LARAMIE, WYOMING
From 12-JUL-11 16:39:00 to 12-JUL-11 16:39:00 (MST-7)
Location: (CYS)CHEYENNE AIRPORT
Magnitude: 1.50 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Employee

Flash Flood in LARAMIE, WYOMING
From 12-JUL-11 16:57:00 to 12-JUL-11 17:57:00 (MST-7)
Location: (CYS)CHEYENNE AIRPORT
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Swiftly moving water was flowing over the intersection of Pershing and Evans Avenue.

Hail in LARAMIE, WYOMING
From 12-JUL-11 16:40:00 to 12-JUL-11 16:40:00 (MST-7)
Location: (CYS)CHEYENNE AIRPORT
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Greenhouse windows were damaged.