Multiple periods of thunderstorms came through southern Wisconsin due to the passage of low pressure.  Mainly widespread wind damage was noted from the multiple rounds of storms, but some significant hail was observed and one tornado.

Tornado in WAUKESHA, WISCONSIN
From 28-JUL-23 21:30:00 to 28-JUL-23 21:31:00 (CST-6)
Location: EAGLE
Tornado F-scale: EF1
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

NWS damage survey found tree damage in a convergent path east of Palmyra.

Tornado in JEFFERSON, WISCONSIN
From 28-JUL-23 21:28:00 to 28-JUL-23 21:30:00 (CST-6)
Location: PALMYRA
Tornado F-scale: EF1
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

NWS damage survey found tree damage in a convergent path east of Palmyra.

Thunderstorm Wind in WALWORTH, WISCONSIN
From 28-JUL-23 21:38:00 to 28-JUL-23 21:41:00 (CST-6)
Location: EAST TROY
Magnitude: 50.00 EG
Property damage: 3.00K
Reported by: Fire Department/Rescue

Trees down.

Thunderstorm Wind in WALWORTH, WISCONSIN
From 28-JUL-23 21:42:00 to 28-JUL-23 21:47:00 (CST-6)
Location: LAKE BEULAH
Magnitude: 65.00 EG
Property damage: 6.00K
Reported by: Emergency Manager

A barn or outbuilding lost a portion of its sheet metal roof.

Thunderstorm Wind in RACINE, WISCONSIN
From 28-JUL-23 21:45:00 to 28-JUL-23 21:50:00 (CST-6)
Location: ROCHESTER
Magnitude: 50.00 EG
Property damage: 7.00K
Crop damage: 0.00K
Reported by: Public

A large tree, greater than a foot in diameter, snapped near its base and landed on a nearby residential structure. Additional scattered trees and branches down in the area.

Thunderstorm Wind in SAUK, WISCONSIN
From 28-JUL-23 20:12:00 to 28-JUL-23 20:18:00 (CST-6)
Location: BARABOO
Magnitude: 56.00 EG
Property damage: 15.00K
Crop damage: 0.00K
Reported by: Public

Many trees and branches down in the Baraboo area, including highway signs and power poles.

Thunderstorm Wind in SAUK, WISCONSIN
From 28-JUL-23 20:25:00 to 28-JUL-23 20:25:00 (CST-6)
Location: LONE ROCK AIRPORT
Magnitude: 67.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

Thunderstorm Wind in WAUKESHA, WISCONSIN
From 28-JUL-23 21:46:00 to 28-JUL-23 21:50:00 (CST-6)
Location: GOERKES CORNER
Magnitude: 50.00 EG
Property damage: 1.50K
Crop damage: 0.00K
Reported by: NWS Employee

A tree was split and another tree down.

Thunderstorm Wind in COLUMBIA, WISCONSIN
From 28-JUL-23 20:20:00 to 28-JUL-23 20:25:00 (CST-6)
Location: OKEE
Magnitude: 50.00 EG
Property damage: 4.00K
Crop damage: 0.00K
Reported by: NWS Employee

Several large trees down along the northern portion of Lake Wisconsin.

Thunderstorm Wind in COLUMBIA, WISCONSIN
From 28-JUL-23 20:25:00 to 28-JUL-23 20:30:00 (CST-6)
Location: OKEE
Magnitude: 50.00 EG
Property damage: 1.00K
Crop damage: 0.00K
Reported by: Public

A large tree down.

Hail in RACINE, WISCONSIN
From 28-JUL-23 19:36:00 to 28-JUL-23 19:36:00 (CST-6)
Location: WATERFORD
Magnitude: 2.50 
Reported by: Social Media

A picture of the hail was provided on social media.

Hail in RACINE, WISCONSIN
From 28-JUL-23 19:40:00 to 28-JUL-23 19:40:00 (CST-6)
Location: WATERFORD
Magnitude: 2.50 
Reported by: Social Media

Thunderstorm Wind in WALWORTH, WISCONSIN
From 28-JUL-23 21:55:00 to 28-JUL-23 21:55:00 (CST-6)
Location: EAST TROY
Magnitude: 50.00 MG
Crop damage: 0.00K
Reported by: AWOS

Flash Flood in DANE, WISCONSIN
From 28-JUL-23 21:10:00 to 28-JUL-23 22:45:00 (CST-6)
Location: MIDDLETON
Flood cause: Heavy Rain
Property damage: 25.00K
Crop damage: 0.00K
Reported by: 911 Call Center

Flash flooding of streets in Madison especially on the west and northwest sides. Vehicles stranded in high water.

Thunderstorm Wind in COLUMBIA, WISCONSIN
From 28-JUL-23 20:03:00 to 28-JUL-23 20:03:00 (CST-6)
Location: WISCONSIN DELLS
Magnitude: 50.00 EG
Property damage: 3.00K
Crop damage: 0.00K
Reported by: Public

Large branches around 4-6 inches snapped.

Thunderstorm Wind in COLUMBIA, WISCONSIN
From 28-JUL-23 20:32:00 to 28-JUL-23 20:35:00 (CST-6)
Location: ARLINGTON
Magnitude: 50.00 EG
Property damage: 3.00K
Crop damage: 0.00K
Reported by: Public

A tree with a diameter around 12 inches snapped at its base.  Several large tree limbs down.

Thunderstorm Wind in DODGE, WISCONSIN
From 28-JUL-23 20:51:00 to 28-JUL-23 20:51:00 (CST-6)
Location: LOST LAKE
Magnitude: 50.00 EG
Property damage: 0.50K
Reported by: Trained Spotter

An 8 inch diameter tree down on highway 73.

Thunderstorm Wind in SAUK, WISCONSIN
From 28-JUL-23 20:33:00 to 28-JUL-23 20:35:00 (CST-6)
Location: SAUK CITY
Magnitude: 52.00 EG
Property damage: 3.00K
Crop damage: 0.00K
Reported by: Broadcast Media

A large branch around 8 inches in diameter down on a house.

Thunderstorm Wind in DODGE, WISCONSIN
From 28-JUL-23 21:12:00 to 28-JUL-23 21:15:00 (CST-6)
Location: HUSTISFORD
Magnitude: 50.00 EG
Property damage: 3.00K
Crop damage: 0.00K
Reported by: Public

A tree branch around 4-6 inches in diameter fell onto a residential structure.

Hail in LAFAYETTE, WISCONSIN
From 28-JUL-23 18:45:00 to 28-JUL-23 18:45:00 (CST-6)
Location: DARLINGTON
Magnitude: 1.00 
Reported by: Trained Spotter

Thunderstorm Wind in DODGE, WISCONSIN
From 28-JUL-23 21:03:00 to 28-JUL-23 21:06:00 (CST-6)
Location: BEAVER DAM ARPT
Magnitude: 50.00 EG
Property damage: 0.50K
Crop damage: 0.00K
Reported by: Public

A large tree branch around 6 inches in diameter snapped.

Thunderstorm Wind in WASHINGTON, WISCONSIN
From 28-JUL-23 21:39:00 to 28-JUL-23 21:43:00 (CST-6)
Location: HUBERTUS
Magnitude: 50.00 EG
Property damage: 1.00K
Crop damage: 0.00K
Reported by: Public

A Shagbark Hickory tree was snapped about a third of the way up the tree.

Thunderstorm Wind in DANE, WISCONSIN
From 28-JUL-23 21:05:00 to 28-JUL-23 21:08:00 (CST-6)
Location: STOUGHTON
Magnitude: 50.00 EG
Property damage: 3.00K
Crop damage: 0.00K
Reported by: Public

A tree down on a house.

Thunderstorm Wind in WASHINGTON, WISCONSIN
From 28-JUL-23 21:30:00 to 28-JUL-23 21:35:00 (CST-6)
Location: HARTFORD
Magnitude: 56.00 EG
Property damage: 8.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Many 4-6 inch diameter branches down on Grand Ave. A power pole was damaged.

Thunderstorm Wind in DANE, WISCONSIN
From 28-JUL-23 20:47:00 to 28-JUL-23 20:47:00 (CST-6)
Location: (MSN)TRUAX FLD MADIS
Magnitude: 50.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

Thunderstorm Wind in DANE, WISCONSIN
From 28-JUL-23 20:36:00 to 28-JUL-23 20:41:00 (CST-6)
Location: WAUNAKEE
Magnitude: 50.00 EG
Property damage: 1.00K
Crop damage: 0.00K
Reported by: Public

A tree down.

Thunderstorm Wind in DANE, WISCONSIN
From 28-JUL-23 20:38:00 to 28-JUL-23 20:42:00 (CST-6)
Location: WAUNAKEE
Magnitude: 50.00 EG
Property damage: 6.00K
Crop damage: 0.00K
Reported by: Public

Several trees and branches down.

Thunderstorm Wind in JEFFERSON, WISCONSIN
From 28-JUL-23 21:30:00 to 28-JUL-23 21:34:00 (CST-6)
Location: SULLIVAN
Magnitude: 61.00 EG
Property damage: 1.00K
Crop damage: 0.00K
Reported by: NWS Employee

Estimated 60-70 mph wind gust at National Weather Service office. Some tree damage noted.

Thunderstorm Wind in JEFFERSON, WISCONSIN
From 28-JUL-23 21:16:00 to 28-JUL-23 21:26:00 (CST-6)
Location: PIPERSVILLE
Magnitude: 50.00 EG
Property damage: 1.00K
Crop damage: 0.00K
Reported by: Public

A tree with a diameter around a foot down on the north side of the Rock River.

Thunderstorm Wind in WAUKESHA, WISCONSIN
From 28-JUL-23 22:00:00 to 28-JUL-23 22:00:00 (CST-6)
Location: MUSKEGO
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

An estimated wind gust of 60 mph from a trained spotter.

Hail in LAFAYETTE, WISCONSIN
From 28-JUL-23 18:25:00 to 28-JUL-23 18:25:00 (CST-6)
Location: IPSWICH
Magnitude: 2.50 
Reported by: Social Media

A picture of the hail was provided on social media.

Hail in LAFAYETTE, WISCONSIN
From 28-JUL-23 18:27:00 to 28-JUL-23 18:27:00 (CST-6)
Location: BELMONT
Magnitude: 2.00 
Reported by: Public

Hail in WAUKESHA, WISCONSIN
From 28-JUL-23 19:12:00 to 28-JUL-23 19:17:00 (CST-6)
Location: MUKWONAGO
Magnitude: 1.25 
Reported by: Broadcast Media

Hail in RACINE, WISCONSIN
From 28-JUL-23 19:40:00 to 28-JUL-23 19:40:00 (CST-6)
Location: WATERFORD
Magnitude: 1.00 
Reported by: Social Media

Thunderstorm Wind in MILWAUKEE, WISCONSIN
From 28-JUL-23 21:55:00 to 28-JUL-23 22:03:00 (CST-6)
Location: DOWNTOWN MILWAUKEE
Magnitude: 50.00 EG
Property damage: 0.50K
Crop damage: 0.00K
Reported by: Broadcast Media

Tree with diameter of nearly a foot was snapped.

Thunderstorm Wind in GREEN, WISCONSIN
From 28-JUL-23 20:55:00 to 28-JUL-23 20:55:00 (CST-6)
Location: MONROE AIRPORT
Magnitude: 51.00 MG
Reported by: AWOS

Thunderstorm Wind in JEFFERSON, WISCONSIN
From 28-JUL-23 09:16:00 to 28-JUL-23 09:27:00 (CST-6)
Location: FT ATKINSON
Magnitude: 65.00 EG
Property damage: 60.00K
Crop damage: 0.00K
Reported by: Broadcast Media

A swath of tree damage in Fort Atkinson. This includes 60-70 trees and branches down   in Evergreen Cemetery. Other scattered trees and branches down in the city and just northwest of the city. Trees down on a car. 6000-7000 households and businesses without power.

Thunderstorm Wind in JEFFERSON, WISCONSIN
From 28-JUL-23 21:30:00 to 28-JUL-23 21:35:00 (CST-6)
Location: SULLIVAN
Magnitude: 56.00 EG
Property damage: 4.00K
Crop damage: 0.00K
Reported by: NWS Employee

Multiple trees down on Hardscrabble Road.

Thunderstorm Wind in JEFFERSON, WISCONSIN
From 28-JUL-23 21:25:00 to 28-JUL-23 21:35:00 (CST-6)
Location: PALMYRA
Magnitude: 50.00 EG
Property damage: 4.00K
Crop damage: 0.00K
Reported by: Public

Scattered trees and branches down in Palmyra.

Thunderstorm Wind in WAUKESHA, WISCONSIN
From 28-JUL-23 21:35:00 to 28-JUL-23 21:35:00 (CST-6)
Location: DOUSMAN
Magnitude: 50.00 EG
Property damage: 4.00K
Crop damage: 0.00K
Reported by: NWS Employee

A tree fell onto a power pole knocking it down.