Several lines of strong to severe thunderstorms moved across southern Wisconsin throughout the day on October 1st into the early morning hours of October 2nd. The heavy rain and thunderstorms were associated with the passage of a slow moving cold front.  Straight-line wind damage was noted across Lafayette county into southern Dane county, while two tornadoes occurred in eastern Jefferson and western Waukesha counties. Training thunderstorms led to several inches of rain and flash flooding in many locations across southern WI.

Flash Flood in OZAUKEE, WISCONSIN
From 01-OCT-19 20:15:00 to 01-OCT-19 22:30:00 (CST-6)
Location: LAKE CHURCH
Flood cause: Heavy Rain
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Southbound lanes of I-43 flooded and closed from highway D at Belgium to highway H near Port Washington. Several roads flooded and impassable in the northern portion of Ozaukee County.

Flash Flood in DODGE, WISCONSIN
From 01-OCT-19 20:00:00 to 01-OCT-19 22:30:00 (CST-6)
Location: FOX LAKE
Flood cause: Heavy Rain
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Multiple roads flooded and closed throughout the county after several inches of rain. This includes a segment of highway 28 due to the flooding waters of Theresa Marsh.

Flash Flood in DANE, WISCONSIN
From 01-OCT-19 20:35:00 to 01-OCT-19 22:30:00 (CST-6)
Location: MENDOTA
Flood cause: Heavy Rain
Property damage: 50.00K
Crop damage: 0.00K
Reported by: Public

Extensive street flooding on Washington Ave. with people sitting on top of their cars to avoid the floodwaters. Other street flooding across the Madison area.

Flash Flood in SHEBOYGAN, WISCONSIN
From 01-OCT-19 08:00:00 to 01-OCT-19 14:00:00 (CST-6)
Location: HAVEN
Flood cause: Heavy Rain
Property damage: 3.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Several roads were flooded and closed across the county after several inches of rain.

Heavy Rain in DANE, WISCONSIN
From 01-OCT-19 09:35:00 to 01-OCT-19 15:00:00 (CST-6)
Location: CAMP RANDALL STADIUM
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Flooding on E. Washington St. and other secondary roads on the isthmus or just north of the isthmus in Madison after a quick 1.5 inches of rain. The drainage was slow and some streets had to be closed.

Flash Flood in DODGE, WISCONSIN
From 01-OCT-19 07:20:00 to 01-OCT-19 13:20:00 (CST-6)
Location: FOX LAKE
Flood cause: Heavy Rain
Property damage: 3.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Multiple roads flooded and closed throughout the county after a few inches of rain. This included highway AY near highway 28.

Flash Flood in FOND DU LAC, WISCONSIN
From 01-OCT-19 18:30:00 to 01-OCT-19 21:15:00 (CST-6)
Location: MARBLEHEAD
Flood cause: Heavy Rain
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Public

Multiple reports of flooded roads in Fond du Lac including a foot of standing water across portions of I-41 and highway 151. Southbound lanes of I-41 were closed at Hickory St. due to the flooding.

Flash Flood in SHEBOYGAN, WISCONSIN
From 01-OCT-19 19:00:00 to 01-OCT-19 21:30:00 (CST-6)
Location: HAVEN
Flood cause: Heavy Rain
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Several roads were flooded and closed across the county after several inches of rain. This included highway 144 from highway 28 to highway I west of Random Lake. Flooding of streets in Plymouth and Sheboygan with water up to 2 feet in some intersections.

Tornado in JEFFERSON, WISCONSIN
From 01-OCT-19 20:25:00 to 01-OCT-19 20:34:00 (CST-6)
Location: BUSSEYVILLE
Tornado F-scale: EF0
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

Sporadic damage noted along the path of the weak tornado along the southwest side of Fort Atkinson.  Clearly started in a corn field that had corn stalks pulled up and deposited on a farm house across the street.  Ended on the southern side of the city where a few houses sustained damage, mainly from trees falling on them.

Tornado in JEFFERSON, WISCONSIN
From 01-OCT-19 20:42:00 to 01-OCT-19 20:47:00 (CST-6)
Location: SULLIVAN
Tornado F-scale: EF1
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

Damage from this tornado came within a mile and a half of NWS Milwaukee to the north.  Mainly tree damage from this tornado, though one house did have siding and window damage from the debris blown into it.

Tornado in WAUKESHA, WISCONSIN
From 01-OCT-19 20:47:00 to 01-OCT-19 20:56:00 (CST-6)
Location: UTICA
Tornado F-scale: EF1
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

Damage was mainly to trees though a few outbuildings were damaged down the road from NWS Milwaukee.  One garage had antique sports cars stored in it which had its door blown in and the wall push out, but was just sitting on cinder blocks.  Extensive tree damage near School Section Lake and another shed toward the end of the path.

Thunderstorm Wind in LAFAYETTE, WISCONSIN
From 01-OCT-19 19:13:00 to 01-OCT-19 19:15:00 (CST-6)
Location: TRUMAN
Magnitude: 61.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Some roof damage to a structure on Truman Rd.

Thunderstorm Wind in LAFAYETTE, WISCONSIN
From 01-OCT-19 19:16:00 to 01-OCT-19 19:50:00 (CST-6)
Location: CALAMINE
Magnitude: 82.00 EG
Property damage: 100.00K
Crop damage: 5.00K
Reported by: NWS Storm Survey

A swath of snapped and uprooted trees and flattened corn. Some structural damage to homes and farm buildings. A large tree limb fell on a truck.

Hail in ROCK, WISCONSIN
From 01-OCT-19 10:37:00 to 01-OCT-19 10:37:00 (CST-6)
Location: MALLWOOD
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Social Media

Thunderstorm Wind in DANE, WISCONSIN
From 01-OCT-19 19:50:00 to 01-OCT-19 20:20:00 (CST-6)
Location: MONTROSE
Magnitude: 70.00 EG
Property damage: 50.00K
Crop damage: 2.00K
Reported by: Emergency Manager

A swath of tree damage and corn damage from straight-line winds. Many trees snapped and uprooted in Belleville with some fallen on homes. A construction trailer was rolled.

Thunderstorm Wind in GREEN, WISCONSIN
From 01-OCT-19 19:38:00 to 01-OCT-19 20:12:00 (CST-6)
Location: POSTVILLE
Magnitude: 61.00 EG
Property damage: 10.00K
Crop damage: 2.00K
Reported by: NWS Storm Survey

A swath of scattered tree and crop damage via straight-line winds.

Thunderstorm Wind in IOWA, WISCONSIN
From 01-OCT-19 19:25:00 to 01-OCT-19 19:50:00 (CST-6)
Location: WALDWICK
Magnitude: 61.00 EG
Property damage: 10.00K
Crop damage: 2.00K
Reported by: NWS Storm Survey

A swath of scattered tree and crop damage via straight-line winds.

Heavy Rain in MILWAUKEE, WISCONSIN
From 01-OCT-19 21:00:00 to 01-OCT-19 22:00:00 (CST-6)
Location: MILWAUKEE TIMMERMAN AIRPORT
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

A flooded road near the intersection of Mayfair Rd. and Congress St.

Flash Flood in COLUMBIA, WISCONSIN
From 01-OCT-19 18:15:00 to 01-OCT-19 21:15:00 (CST-6)
Location: CAMBRIA
Flood cause: Heavy Rain
Property damage: 2.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Bumper deep water flowing over highway H due to the flash flooding of Sand Spring Creek.

Flash Flood in COLUMBIA, WISCONSIN
From 01-OCT-19 18:10:00 to 01-OCT-19 21:15:00 (CST-6)
Location: PORTAGE
Flood cause: Heavy Rain
Property damage: 1.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Street flooding across Portage including Henry Dr. and Winnebago St.