A slow moving low pressure system allowed for heavy rain to fall over parts of Northeastern Colorado, affecting primarily Sedgwick and Phillips Counties. Severe thunderstorms produce large hail and very heavy rain.  Downed power lines were reported over parts of Sedgwick County on the 11th.  Farmers in the area reported extensive flooding over southeastern Sedwick County from around Sixteen-mile Corner east to the Nebraska state line.  Several basements were also flooded.
In addition, extensive flooding and flash flooding forced dozens of road closures in northeast Phillips County.  Colorado Highway 23; east of Amherst, and U.S. Highway 6; east of Holyoke, were closed due to flooding.  Dozens of secondary roads were also reportedly under water.  A section of railroad track about 1.5 miles southwest of Amherst was washed out with up to 10 feet of water covering the highway.  Extensive field flooding was also observed.  In a two day period, a trained spotter in eastern Phillips County measured over 10.3 inches of rainfall.

Hail in SEDGWICK, COLORADO
From 11-JUN-07 15:54:00 to 11-JUN-07 15:54:00 (MST-7)
Location: OVID
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in SEDGWICK, COLORADO
From 11-JUN-07 16:04:00 to 11-JUN-07 16:04:00 (MST-7)
Location: JULESBURG
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in SEDGWICK, COLORADO
From 11-JUN-07 19:36:00 to 11-JUN-07 19:36:00 (MST-7)
Location: JULESBURG
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in SEDGWICK, COLORADO
From 11-JUN-07 15:45:00 to 11-JUN-07 15:45:00 (MST-7)
Location: JULESBURG
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in SEDGWICK, COLORADO
From 11-JUN-07 15:54:00 to 11-JUN-07 15:54:00 (MST-7)
Location: OVID
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in SEDGWICK, COLORADO
From 11-JUN-07 16:14:00 to 11-JUN-07 16:14:00 (MST-7)
Location: JULESBURG
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in SEDGWICK, COLORADO
From 11-JUN-07 16:28:00 to 11-JUN-07 16:28:00 (MST-7)
Location: JULESBURG
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in SEDGWICK, COLORADO
From 11-JUN-07 15:25:00 to 11-JUN-07 15:25:00 (MST-7)
Location: OVID
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in SEDGWICK, COLORADO
From 11-JUN-07 16:08:00 to 11-JUN-07 16:08:00 (MST-7)
Location: JULESBURG MUNI ARPT
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in SEDGWICK, COLORADO
From 11-JUN-07 16:13:00 to 11-JUN-07 16:13:00 (MST-7)
Location: JULESBURG
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

Flash Flood in PHILLIPS, COLORADO
From 12-JUN-07 10:58:00 to 12-JUN-07 20:45:00 (MST-7)
Location: AMHERST
Flood cause: Heavy Rain
Property damage: 100.00K
Crop damage: 100.00K
Reported by: Trained Spotter

Flood in PHILLIPS, COLORADO
From 12-JUN-07 20:45:00 to 14-JUN-07 11:00:00 (MST-7)
Location: HOLYOKE
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Flash Flood in SEDGWICK, COLORADO
From 12-JUN-07 11:30:00 to 12-JUN-07 20:45:00 (MST-7)
Location: JULESBURG
Flood cause: Heavy Rain
Property damage: 100.00K
Crop damage: 100.00K
Reported by: Emergency Manager

Flash Flood in SEDGWICK, COLORADO
From 11-JUN-07 19:45:00 to 11-JUN-07 23:00:00 (MST-7)
Location: JULESBURG
Flood cause: Heavy Rain
Property damage: 100.00K
Crop damage: 100.00K
Reported by: Emergency Manager