Scattered thunderstorms developed ahead of a cold front moving east through Iowa.  By the evening, a surface low had developed along the cold front as it moved into Eastern Iowa.  This enhanced the overall lift in a near tropical atmosphere and produced copious amounts of rain in a very short time period.  This resulted in flash flooding across parts of Northeast Iowa and Northwest Illinois due to the hilly terrain.

Flash Flood in STEPHENSON, ILLINOIS
From 16-JUN-04 18:20:00 to 16-JUN-04 21:00:00 (CST)
Location: LENA
Property damage: 10K
Crop damage: 3K
Reported by: EMERGENCY MANAGER

Yellow Creek out of banks; Sunnyside Rd closed due to high water.

Heavy Rain in STEPHENSON, ILLINOIS
From 16-JUN-04 16:00:00 to 16-JUN-04 16:00:00 (CST)
Location: LENA
Reported by: TRAINED SPOTTER

Water ponding on road

Heavy Rain in STEPHENSON, ILLINOIS
From 16-JUN-04 16:28:00 to 16-JUN-04 16:28:00 (CST)
Location: CEDARVILLE
Reported by: TRAINED SPOTTER

Water ponding in low lying areas

Flash Flood in STEPHENSON, ILLINOIS
From 16-JUN-04 16:00:00 to 16-JUN-04 18:30:00 (CST)
Location: CEDARVILLE
Property damage: 20K
Crop damage: 3K
Reported by: LAW ENFORCEMENT

Culvert washed out on Scioto Mills Rd between Beaver and Cedarville Rds.

Heavy Rain in STEPHENSON, ILLINOIS
From 16-JUN-04 15:40:00 to 16-JUN-04 16:40:00 (CST)
Location: CEDARVILLE
Magnitude: 2 
Reported by: AMATEUR RADIO

In past hour; culverts full

Heavy Rain in STEPHENSON, ILLINOIS
From 16-JUN-04 18:05:00 to 16-JUN-04 18:05:00 (CST)
Location: LENA
Reported by: TRAINED SPOTTER

Water ponding on Unity Rd and intersection of Range and Rink Rds

Heavy Rain in STEPHENSON, ILLINOIS
From 16-JUN-04 18:05:00 to 16-JUN-04 18:05:00 (CST)
Location: LENA
Reported by: TRAINED SPOTTER

Water ponding on Sunnyside Rd

Heavy Rain in JO DAVIESS, ILLINOIS
From 16-JUN-04 18:28:00 to 16-JUN-04 19:58:00 (CST)
Location: GALENA
Magnitude: 1.5 
Reported by: TRAINED SPOTTER

In 90 minutes; nuisance flooded occurring at 1906 CST

Heavy Rain in JO DAVIESS, ILLINOIS
From 16-JUN-04 14:14:00 to 16-JUN-04 16:14:00 (CST)
Location: STOCKTON
Magnitude: 3.31 
Reported by: OFFICIAL NWS OBS.

In the past 2 hours.

Flash Flood in JO DAVIESS, ILLINOIS
From 16-JUN-04 14:30:00 to 16-JUN-04 20:00:00 (CST)
Location: STOCKTON
Property damage: 10K
Crop damage: 4K
Reported by: LAW ENFORCEMENT

U.S. 20 impassable

Heavy Rain in JO DAVIESS, ILLINOIS
From 16-JUN-04 14:30:00 to 16-JUN-04 14:30:00 (CST)
Location: COUNTYWIDE
Reported by: LAW ENFORCEMENT

Water ponding on many roads in the eastern half of the county

Flash Flood in JO DAVIESS, ILLINOIS
From 16-JUN-04 19:10:00 to 17-JUN-04 00:00:00 (CST)
Location: GALENA
Property damage: 10K
Crop damage: 3K
Reported by: TRAINED SPOTTER

Numerous roads under water with depths ranging from 6 inches to 3 feet; Known roads closed include Field Street, Stagecoach Trail Rd, and intersection of Spring and U.S. 20

Flash Flood in STEPHENSON, ILLINOIS
From 16-JUN-04 19:30:00 to 17-JUN-04 03:00:00 (CST)
Location: LENA
Property damage: 10K
Crop damage: 3K
Reported by: TRAINED SPOTTER

Wagner Rd closed due to high water.

Flash Flood in STEPHENSON, ILLINOIS
From 16-JUN-04 18:20:00 to 16-JUN-04 21:00:00 (CST)
Location: LENA
Property damage: 10K
Crop damage: 3K
Reported by: EMERGENCY MANAGER

Waddams Creek out of banks; Jct of Unity and Louisa Rds closed due to high water

Heavy Rain in JO DAVIESS, ILLINOIS
From 16-JUN-04 15:50:00 to 16-JUN-04 15:50:00 (CST)
Location: WARREN
Reported by: LAW ENFORCEMENT

Water 5 inches deep on Highway 78; U.S. 20 east of Stockton 1-2 inches of water on it.

Thunderstorm Wind in STEPHENSON, ILLINOIS
From 16-JUN-04 15:51:00 to 16-JUN-04 15:55:00 (CST)
Location: CEDARVILLE
Magnitude: 52 EG
Property damage: 1K
Reported by: LAW ENFORCEMENT

Trees down at intersection of Charoaise Rd and Red Oad Rd