Flash flooding and scattered severe thunderstorms struck parts of south-central and southeast Wisconsin during the afternoon and evening hours. Several clusters of showers and thunderstorms moved east/northeast at 35 to 40 mph across the area.  Synoptically, a warm front stalled over northern Illinois with an axis of instability extending north into southern Wisconsin. A short-wave trough aloft moved east through the region. South of the surface front the dewpoints were in the 70s. Here is a break down by county:Walworth Co:  this county was hit hard with two periods of heavy rains which resulted in flash flooding. Lake Petite, just south of Fontana, overflowed into a retention basin near a residential subdivision. Residents were evacuated in the late afternoon as the retention basin filled up.  Nearby in the village of Walworth, hundreds of residents were evacuated after water rose to a depth of 4 feet on local roads.  Washouts of gravel road shoulders were noted around the villages of Walworth and Fontana, as well as agricultural land erosion and crop damage.  During the evening hours the heavy rains created flash flood conditions over the southeast part of the county from around Lake Geneva to Genoa City.  Some residents were evacuated and additional washouts of gravel shoulders were reported.  The Nippersink Creek which flows through Genoa City reach a depth of 10 feet, when normally it is only 1 foot deep!  All together in Walworth County, 4 people were injured by flood debris, 10 people were left homeless, 57 homes and 4 businesses sustained flood damage, and 5000 acres of agricultural land were severely damaged to the tune of $800,000. Roughly half of the property damage was attributed to loses in the public sector and the other half in the private/business sector.  Otherwise, powerful thunderstorm winds uprooted trees from La Grange to Elkhorn, and blew over a semi-tractor trailer unit on Interstate 43 near Elkhorn. Dane Co:  heavy rains hit the Madison and Middleton areas once again, resulting in rivers and streams quickly exceeding flood stage.  Between 1500 and 1600CST, the city of Middleton picked up 1.90 inches of rain.  As a result, mudslides occurred on High Point Road, where the mud was 4 inches deep.  Flood damage to landscaping of nearby homes was also noted, as well as gravel shoulder washouts on nearby roads.  The Yahara River running through the Madison area was reported to be rising quickly, and was 10 feet beyond its normal bank on both sides.  Nearby homes once again suffered another round of landscape erosion and basement flooding, and sandbagging continued. As was the case earlier in June, agricultural land surrounding the Madison metro area suffered another round of moderate to severe soil erosion and associated crop damage.Kenosha Co:  2 rounds of powerful thunderstorm winds uprooted large trees in the southwest part of the county.The heavy rain event listed above for Dane County represents the 15.27 inches of rain that fell at Madison Truax Field (Dane Co.) the past 30 days ending at 0600CST on June 14th.  This was the greatest any 30-day total in the past 50 years.  On the following day, June 15th, Lake Mendota and Lake Monona rose to their 2nd highest levels ever, 30 and 27 inches above normal summer levels, respectively.  The heavy rain event listed above for Sauk County represents a 15 inch rainfall total for the period of June 1-14 somewhere in the county.  The exact location wasn't specified in a newspaper article. It may be a Wisconsin state record for a 2-week period.

Heavy Rain in SAUK, WISCONSIN
From 14-JUN-00 23:59:00 to 14-JUN-00 23:59:00 (CST)
Location: BARABOO
Reported by: NEWSPAPER

Flood in IOWA, WISCONSIN
From 13-JUN-00 17:00:00 to 13-JUN-00 19:00:00 (CST)
Location: AVOCA
Reported by: EMERGENCY MANAGER

Heavy Rain in DANE, WISCONSIN
From 14-JUN-00 06:00:00 to 14-JUN-00 06:00:00 (CST)
Location: MADISON TRUAX ARPT
Reported by: NEWSPAPER

Flash Flood in WALWORTH, WISCONSIN
From 13-JUN-00 15:30:00 to 13-JUN-00 17:00:00 (CST)
Location: WALWORTH
Property damage: 850K
Crop damage: 500K
Reported by: LAW ENFORCEMENT

Flash Flood in DANE, WISCONSIN
From 13-JUN-00 16:10:00 to 13-JUN-00 19:30:00 (CST)
Location: CENTRAL PORTION
Property damage: 1.27M
Crop damage: 1M
Reported by: LAW ENFORCEMENT

Flash Flood in WALWORTH, WISCONSIN
From 13-JUN-00 17:30:00 to 13-JUN-00 22:00:00 (CST)
Location: LAKE GENEVA
Property damage: 350K
Crop damage: 300K
Reported by: LAW ENFORCEMENT

Thunderstorm Wind in WALWORTH, WISCONSIN
From 13-JUN-00 17:45:00 to 13-JUN-00 18:00:00 (CST)
Location: LA GRANGE
Property damage: 25K
Reported by: LAW ENFORCEMENT

Thunderstorm Wind in KENOSHA, WISCONSIN
From 13-JUN-00 17:40:00 to 13-JUN-00 17:40:00 (CST)
Location: POWERS LAKE
Property damage: 1K
Reported by: LAW ENFORCEMENT

Thunderstorm Wind in KENOSHA, WISCONSIN
From 13-JUN-00 18:00:00 to 13-JUN-00 18:10:00 (CST)
Location: POWERS LAKE
Property damage: 5K
Reported by: LAW ENFORCEMENT