Severe thunderstorms produced wind damage, including a tornado, over east-central Wisconsin. Numerous trees were snapped or uprooted and power lines downed. The storms also produced torrential rainfall that caused urban flooding and flash flooding in parts of the Green Bay area and Fox Valley. There were numerous reports of 2 to 4 inches of rain, along with a few even higher totals.

Tornado in CALUMET, WISCONSIN
From 28-AUG-18 15:33:00 to 28-AUG-18 15:34:00 (CST-6)
Location: NEW HOLSTEIN
Tornado F-scale: EF0
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

A tornado touched down just inside the Calumet County line and moved east into Manitowoc County. A tree was uprooted near Meggers Road.

Tornado in MANITOWOC, WISCONSIN
From 28-AUG-18 15:34:00 to 28-AUG-18 15:35:00 (CST-6)
Location: KIEL
Tornado F-scale: EF1
Property damage: 75.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

The tornado that began just inside the Calumet County border near Meggers Road moved into Manitowoc County and destroyed a barn (DI 1, DOD 5,6). The tornado produced sporadic tree damage along its path and dissipated less than two minutes after it formed.

Thunderstorm Wind in BROWN, WISCONSIN
From 28-AUG-18 14:01:00 to 28-AUG-18 14:01:00 (CST-6)
Location: DE PERE
Magnitude: 52.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Public

Thunderstorm winds downed large tree branches. One of the branches crushed the roof of a car.

Thunderstorm Wind in WAUSHARA, WISCONSIN
From 28-AUG-18 14:05:00 to 28-AUG-18 14:05:00 (CST-6)
Location: WAUTOMA ARPT
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Thunderstorm winds downed several trees near Wautoma.

Thunderstorm Wind in CALUMET, WISCONSIN
From 28-AUG-18 15:30:00 to 28-AUG-18 15:30:00 (CST-6)
Location: NEW HOLSTEIN
Magnitude: 61.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Thunderstorm winds downed several dozen trees in New Holstein.

Thunderstorm Wind in MANITOWOC, WISCONSIN
From 28-AUG-18 15:35:00 to 28-AUG-18 15:35:00 (CST-6)
Location: KIEL
Magnitude: 61.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Thunderstorm winds downed numerous trees and power lines in the Kiel area. The time of this report was estimated based on radar data.

Thunderstorm Wind in MANITOWOC, WISCONSIN
From 28-AUG-18 15:38:00 to 28-AUG-18 15:38:00 (CST-6)
Location: LOUIS CORNERS
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Thunderstorm winds downed trees in southern Manitowoc County. The time of this report was estimated based on radar data.

Thunderstorm Wind in MANITOWOC, WISCONSIN
From 28-AUG-18 15:44:00 to 28-AUG-18 15:44:00 (CST-6)
Location: SPRING VLY
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Thunderstorm winds downed trees and power lines near the intersection of County Road X and Highway 42. The time of this report was estimated based on radar data.

Thunderstorm Wind in WINNEBAGO, WISCONSIN
From 28-AUG-18 14:57:00 to 28-AUG-18 14:57:00 (CST-6)
Location: NEENAH
Magnitude: 54.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A thunderstorms wind gust of 62 MPH was measured in Neenah.

Thunderstorm Wind in CALUMET, WISCONSIN
From 28-AUG-18 15:30:00 to 28-AUG-18 15:30:00 (CST-6)
Location: NEW HOLSTEIN
Magnitude: 52.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

A thunderstorm wind gust of 60 MPH was measured in New Holstein.

Thunderstorm Wind in MANITOWOC, WISCONSIN
From 28-AUG-18 15:44:00 to 28-AUG-18 15:44:00 (CST-6)
Location: MILLHOME
Magnitude: 70.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

Thunderstorm winds uprooted or snapped 100 trees near Cedar Lake.

Thunderstorm Wind in MANITOWOC, WISCONSIN
From 28-AUG-18 15:54:00 to 28-AUG-18 15:54:00 (CST-6)
Location: NORTHEIM
Magnitude: 54.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

A thunderstorm wind gust of 62 MPH was measured in Newton.

Flood in WINNEBAGO, WISCONSIN
From 28-AUG-18 15:00:00 to 28-AUG-18 17:00:00 (CST-6)
Location: NEENAH
Flood cause: Heavy Rain
Property damage: 2.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Heavy rainfall from thunderstorms caused flooding of some streets Neenah. At least a couple of cars became stranded in the flooded streets.

Flood in BROWN, WISCONSIN
From 28-AUG-18 14:30:00 to 28-AUG-18 17:00:00 (CST-6)
Location: GREEN BAY
Flood cause: Heavy Rain
Property damage: 5.00K
Crop damage: 0.00K
Reported by: NWS Employee

Heavy rainfall from thunderstorms caused urban flooding in and around Green Bay. The most extensive flooding was in low-lying and poor drainage areas where a few vehicles became stranded.

Flash Flood in OUTAGAMIE, WISCONSIN
From 28-AUG-18 15:30:00 to 28-AUG-18 17:00:00 (CST-6)
Location: DARBOY
Flood cause: Heavy Rain
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Torrential rainfall caused roads in Appleton to become impassible as water levels rose as high as the hoods of cars.

Flood in CALUMET, WISCONSIN
From 28-AUG-18 16:00:00 to 28-AUG-18 17:30:00 (CST-6)
Location: DARBOY
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Heavy rainfall from thunderstorms flooded roads in the Harrison and Brillion areas.