A strong upper level shortwave moved across southern Wyoming the afternoon of July 6, 2010.  This shortwave interacted with a very moist low level southeast jet to produce very heavy rainfall and widespread severe thunderstorms over Cheyenne County Nebraska.  Severe flash flooding occurred in the town of Lodepole Nebraska the evening of 6 July.

Flash Flood in CHEYENNE, NEBRASKA
From 06-JUL-10 18:08:00 to 06-JUL-10 20:00:00 (MST-7)
Location: COLTON
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Heavy rain has produced flooding just north of Colton. Three inches of rain has fallen and still raining. Some fence posts are under water.

Heavy Rain in CHEYENNE, NEBRASKA
From 06-JUL-10 17:52:00 to 06-JUL-10 18:30:00 (MST-7)
Location: SIDNEY
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Pea sized hail reported along with 2.5 inches of rain in 1.5  hours. 45 MPH wind gusts. Normally dry creek bed now 15 feet across.

Tornado in CHEYENNE, NEBRASKA
From 06-JUL-10 16:06:00 to 06-JUL-10 16:08:00 (MST-7)
Location: POTTER
Tornado F-scale: EF0
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Tornado reported on ground near Road 12 south of Potter by public.

Thunderstorm Wind in CHEYENNE, NEBRASKA
From 06-JUL-10 16:30:00 to 06-JUL-10 16:35:00 (MST-7)
Location: POTTER
Magnitude: 61.00 EG
Property damage: 0.00K
Crop damage: 5.00K
Reported by: Public

Farmer said he probably lost his wheat crop.

Thunderstorm Wind in CHEYENNE, NEBRASKA
From 06-JUL-10 16:53:00 to 06-JUL-10 16:56:00 (MST-7)
Location: (SNY)SIDNEY ARPT
Magnitude: 59.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

Thunderstorm Wind in CHEYENNE, NEBRASKA
From 06-JUL-10 16:57:00 to 06-JUL-10 17:00:00 (MST-7)
Location: (SNY)SIDNEY ARPT
Magnitude: 62.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

Flash Flood in CHEYENNE, NEBRASKA
From 06-JUL-10 20:00:00 to 07-JUL-10 01:00:00 (MST-7)
Location: SUNOL
Flood cause: Heavy Rain
Property damage: 30.00K
Crop damage: 0.00K
Reported by: NWS Employee

One county police car lost when flood waters quickly covered road.

Hail in CHEYENNE, NEBRASKA
From 06-JUL-10 16:00:00 to 06-JUL-10 16:20:00 (MST-7)
Location: POTTER
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail fell from 5 PM to 520 PM.

Hail in CHEYENNE, NEBRASKA
From 06-JUL-10 16:46:00 to 06-JUL-10 17:00:00 (MST-7)
Location: BROWNSON
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Heavy rate of hail reported at spotter's location.

Hail in CHEYENNE, NEBRASKA
From 06-JUL-10 17:00:00 to 06-JUL-10 17:06:00 (MST-7)
Location: BROWNSON
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in CHEYENNE, NEBRASKA
From 06-JUL-10 17:05:00 to 06-JUL-10 17:15:00 (MST-7)
Location: SIDNEY
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

One inch diameter hail fell in Sidney between 605PM and 615PM mountain daylight saving time.

Hail in CHEYENNE, NEBRASKA
From 06-JUL-10 19:36:00 to 06-JUL-10 19:45:00 (MST-7)
Location: LODGEPOLE
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Flash Flood in CHEYENNE, NEBRASKA
From 06-JUL-10 20:00:00 to 07-JUL-10 00:00:00 (MST-7)
Location: LODGEPOLE
Flood cause: Heavy Rain
Property damage: 50.00K
Crop damage: 0.00K
Reported by: NWS Employee

Lodgepole Creek overflowed its banks roughly 3.3 miles west of town and flowed east between U.S. Highway 385 and the railroad tracks. The railroad and highway narrowed near the COOP in Lodgepole causing waters to build up pressure and then reode the railroad bed causing flooding in the south part of town by 11 pm. During the worst of the flooding water was five feet deep in places. Other areas in town saw two to three feet of water cover an area three blocks wide and five blocks long.

Thunderstorm Wind in CHEYENNE, NEBRASKA
From 06-JUL-10 16:50:00 to 06-JUL-10 17:00:00 (MST-7)
Location: SIDNEY
Magnitude: 62.00 MG
Property damage: 20.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Strong thunderstorm winds blew railroad cars off their tracks on an overpass in Sidney.