Very slow moving clusters of thunderstorms developed across south-central Wisconsin during the early afternoon hours of June 25th.  Very heavy rains within these storms produced 3 to 5 inches of rain in some areas and resulted in flash flooding near Sun Prairie (Dane Co., Wyocena to Arlington (Columbia Co.), and Middleton (Dane Co.).  Road washouts, gravel shoulder washouts, and basement flooding were the main result from this flooding.  A large area of southern Columbia County had considerable flood and hail damage - refer to details in the specific line entries for flash flooding and hail events for this date.  The slow movement of the the thunderstorms amplified the damage.

Flash Flood in SAUK, WISCONSIN
From 25-JUN-06 14:00:00 to 25-JUN-06 17:00:00 (CST)
Location: HILLPT
Property damage: 500K
Crop damage: 1K
Reported by: EMERGENCY MANAGER

Thunderstorms with torrential downpours produced rainfalls of 3 to 6 inches (radar estimated) in west-central Sauk County.  Specifically, 4.67 inches of rain fell in Hill Point from 1315CST to 1430CST.  Several shoulder gravel washouts occurred on a couple roads in the west-central part of the county as well as on some residential driveways.  Several roads had water depths of 1 to 2 feet on low spots.  The area that was affected the most was a 2 mile by 10 mile band in the Civil Towns of Ironton and Washington.  In this area, four roads had a low spot washed away from the floods.  One farm lost 4 acres of a hay/alfalfa crop.

Flash Flood in DANE, WISCONSIN
From 25-JUN-06 15:00:00 to 25-JUN-06 16:30:00 (CST)
Location: MIDDLETON
Property damage: 20K
Reported by: LAW ENFORCEMENT

Heavy rains of 3 to 5 inches (radar estimated) from thunderstorms caused water to flood over many roads just north of Middleton.  Some gravel shoulder washouts were noted, as well as some basement flooding.

Hail in COLUMBIA, WISCONSIN
From 25-JUN-06 14:10:00 to 25-JUN-06 14:10:00 (CST)
Location: WYOCENA
Magnitude: 0.88 
Reported by: TRAINED SPOTTER

Heavy Rain in DANE, WISCONSIN
From 25-JUN-06 15:00:00 to 25-JUN-06 15:00:00 (CST)
Location: MIDDLETON
Property damage: 20K
Reported by: AMATEUR RADIO

The heavy rains that fell in the Middleton area resulted in  a partial collapse of a roof of a warehouse due to accumulation of rain water on the roof.

Hail in COLUMBIA, WISCONSIN
From 25-JUN-06 13:40:00 to 25-JUN-06 13:40:00 (CST)
Location: POYNETTE
Magnitude: 0.75 
Reported by: AMATEUR RADIO

Hail in SAUK, WISCONSIN
From 25-JUN-06 14:30:00 to 25-JUN-06 14:30:00 (CST)
Location: LOGANVILLE
Magnitude: 0.88 
Reported by: GENERAL PUBLIC

Hail in COLUMBIA, WISCONSIN
From 25-JUN-06 01:30:00 to 25-JUN-06 02:10:00 (CST)
Location: DEKORRA
Magnitude: 1.00 
Property damage: 500M
Crop damage: 1.7M
Reported by: NEWSPAPER

A slow-moving thunderstorm moved from the Dekorra area southeast through the Poynette area to the North Leeds area, leaving in its wake a lot of crop damage due to hail.  A roughly 40 to 45-minute hail shower (stones up to the size of quarters) fell in a band from about 3 miles south-southeast of Dekorra along Kent Rd. to the McKenzie Environmental Education Center just northeast of Poynette.  Crop, vegetable, and fruit damage was noted, and in some cases, an entire year's crop was lost due to hail damage.  Many residential homes and vehicles were damaged.  Hail depth on some roads reached 8 inches and had to be plowed off the roads, especially along Kent Rd. and near the McKenzie Center.  The crop damage estimate is based on a newspaper report which quoted a USDA report.  The property damage is purely an estimate based on a variety of reports.

Lightning in WALWORTH, WISCONSIN
From 26-JUN-06 01:15:00 to 26-JUN-06 01:15:00 (CST)
Location: LA GRANGE
Property damage: 2K
Reported by: EMERGENCY MANAGER

Lightning struck the roof a residence causing a 6-8 inch hole in the roof, and the collpase of the ceiling under the impact area.

Flash Flood in COLUMBIA, WISCONSIN
From 25-JUN-06 13:30:00 to 25-JUN-06 16:00:00 (CST)
Location: WYOCENA
Property damage: 40K
Reported by: EMERGENCY MANAGER

Thunderstorms with torrential rainfall of 3 to 6 inches (radar estimated) within a couple hours caused low spots on several roads to be washed out near Poynette.  In addition, there were other washouts of gravel shoulders on some roads.  Several roads had water depths of 1 to 2 feet on low spots.

Flash Flood in DANE, WISCONSIN
From 25-JUN-06 15:00:00 to 25-JUN-06 17:00:00 (CST)
Location: SUN PRAIRIE
Property damage: 20K
Reported by: TRAINED SPOTTER

Heavy rains of 3 to 5 inches (radar estimated) in a short period of time resulted in flash flooding.  Gravel shoulder washouts occurred on a couple roads, and there was some basement flooding.

Lightning in WALWORTH, WISCONSIN
From 26-JUN-06 01:30:00 to 26-JUN-06 01:30:00 (CST)
Location: LA GRANGE
Property damage: 1K
Reported by: EMERGENCY MANAGER

Lightning struck a tree and traveled through the ground to a residence near STH 12/67 and Lauderdale Drive, and broke two windows and cracked some drywall.