Sunday, 4 July 2010 saw an upper low move through the area, causing a Tornado Watch to be issued.  The area experienced low topped supercells that spawned numerous tornadoes from near Chugwater, Wyoming out to the southern Nebraska Panhandle.  The town of Kimball was hit particularly hard Sunday evening with large hail and torrential rains that flooded the city.  The Kimball County EM told me he had over 4 inches of precip in his rain gauge.  This fell in a matter of two to two and a half hours.

Flash Flood in CHEYENNE, NEBRASKA
From 04-JUL-10 20:23:00 to 04-JUL-10 21:23:00 (MST-7)
Location: SIDNEY
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Numerous streets in Sidney flooded.

Flash Flood in MORRILL, NEBRASKA
From 04-JUL-10 21:14:00 to 04-JUL-10 22:14:00 (MST-7)
Location: BRIDGEPORT
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Some flooding of roads in Bridgeport. Water starting to go down.

Flash Flood in CHEYENNE, NEBRASKA
From 04-JUL-10 21:00:00 to 04-JUL-10 22:15:00 (MST-7)
Location: (SNY)SIDNEY ARPT
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

County road 131 closed between Highway 30 and County Road 30 east of Sidney.

Tornado in KIMBALL, NEBRASKA
From 04-JUL-10 16:09:00 to 04-JUL-10 16:10:00 (MST-7)
Location: BUSHNELL
Tornado F-scale: EF0
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Spotter reported tornado on ground for about 30 seconds before lifting back up into wall cloud.

Hail in KIMBALL, NEBRASKA
From 04-JUL-10 16:25:00 to 04-JUL-10 16:28:00 (MST-7)
Location: BUSHNELL
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Tornado in KIMBALL, NEBRASKA
From 04-JUL-10 17:25:00 to 04-JUL-10 17:26:00 (MST-7)
Location: BUSHNELL
Tornado F-scale: EF0
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Small tornado reported roughly 7 miles southeast of Pine Bluffs Wyoming.

Hail in KIMBALL, NEBRASKA
From 04-JUL-10 16:31:00 to 04-JUL-10 16:34:00 (MST-7)
Location: BUSHNELL
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Flash Flood in KIMBALL, NEBRASKA
From 04-JUL-10 18:48:00 to 04-JUL-10 19:48:00 (MST-7)
Location: KIMBALL
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Underpasses flooded in kimball. Lodge Pole Creek out of its banks. Oliver reservoir rose a foot in the past two hours.

Flash Flood in KIMBALL, NEBRASKA
From 04-JUL-10 18:50:00 to 04-JUL-10 19:50:00 (MST-7)
Location: KIMBALL
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Route 30 in Kimball under four to six inches of water.

Flash Flood in KIMBALL, NEBRASKA
From 04-JUL-10 19:19:00 to 04-JUL-10 20:20:00 (MST-7)
Location: KIMBALL
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Underpasses in the city under 10 feet of water. Emergency manager is closing all roads over Lodge Pole Creek from Kimball to the county line with Cheyenne County.

Thunderstorm Wind in CHEYENNE, NEBRASKA
From 04-JUL-10 19:39:00 to 04-JUL-10 19:41:00 (MST-7)
Location: (SNY)SIDNEY ARPT
Magnitude: 53.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

Flash Flood in KIMBALL, NEBRASKA
From 04-JUL-10 18:52:00 to 04-JUL-10 19:52:00 (MST-7)
Location: KIMBALL
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Highway 71 north of Kimball flooded beneath railroad tracks.