A warm front and shortwave trough produced a line of severe thunderstorms that moved across southern WI. Straight-line winds caused tree damage and some structural damage. Some large hail was reported along with one weak tornado.

Thunderstorm Wind in MARQUETTE, WISCONSIN
From 12-JUN-17 17:00:00 to 12-JUN-17 17:35:00 (CST-6)
Location: HARRISVILLE
Magnitude: 56.00 EG
Property damage: 10.00K
Reported by: 911 Call Center

Numerous branches and trees down throughout the county with the exception of the southwest side of the county.

Thunderstorm Wind in GREEN LAKE, WISCONSIN
From 12-JUN-17 17:27:00 to 12-JUN-17 17:40:00 (CST-6)
Location: PRINCETON
Magnitude: 61.00 EG
Property damage: 5.00K
Reported by: Law Enforcement

Several tree tops snapped off and other trees down.

Thunderstorm Wind in FOND DU LAC, WISCONSIN
From 12-JUN-17 18:05:00 to 12-JUN-17 18:20:00 (CST-6)
Location: OAKFIELD
Magnitude: 65.00 EG
Property damage: 20.00K
Reported by: Emergency Manager

A tree fell onto a garage causing structural damage and damage to the vehicle inside. Numerous tree damage including an uprooted tree and the trunks of smaller trees split.

Thunderstorm Wind in FOND DU LAC, WISCONSIN
From 12-JUN-17 17:45:00 to 12-JUN-17 18:00:00 (CST-6)
Location: WAUPUN
Magnitude: 56.00 EG
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Public

Straight-line wind damage on the north side of Waupun. Half the shingles blown off the roof of a home and branches and trees down.

Thunderstorm Wind in FOND DU LAC, WISCONSIN
From 12-JUN-17 18:00:00 to 12-JUN-17 18:15:00 (CST-6)
Location: BYRON
Magnitude: 70.00 EG
Property damage: 60.00K
Reported by: Public

Straight-line winds sheared off a stave silo and collapsed a large barn. Tree damage also occurred including a 2-3 foot diameter tree down.

Thunderstorm Wind in FOND DU LAC, WISCONSIN
From 12-JUN-17 17:50:00 to 12-JUN-17 18:00:00 (CST-6)
Location: BRANDON
Magnitude: 61.00 EG
Property damage: 5.00K
Reported by: Law Enforcement

Tree branches and trees down.

Tornado in FOND DU LAC, WISCONSIN
From 12-JUN-17 18:21:00 to 12-JUN-17 18:25:00 (CST-6)
Location: WAUCOUSTA
Tornado F-scale: EF0
Property damage: 7.00K
Reported by: NWS Storm Survey

Storm survey revealed EF-0 damage with a peak wind around 80 mph. A couple uprooted trees and many snapped tree branches. Minor damage to the sliding door of a barn. A boat canopy was damaged.  There were numerous eyewitnesses of a waterspout/tornado in the Kettle Moraine Lake area.

Hail in SHEBOYGAN, WISCONSIN
From 12-JUN-17 18:45:00 to 12-JUN-17 18:45:00 (CST-6)
Location: PLYMOUTH
Magnitude: 1.00 
Reported by: Public

Hail in WASHINGTON, WISCONSIN
From 12-JUN-17 18:30:00 to 12-JUN-17 18:30:00 (CST-6)
Location: HARTFORD
Magnitude: 1.00 
Reported by: Public

Thunderstorm Wind in DODGE, WISCONSIN
From 12-JUN-17 18:00:00 to 12-JUN-17 18:10:00 (CST-6)
Location: KEKOSKEE
Magnitude: 56.00 EG
Property damage: 2.00K
Reported by: Public

Six to 12 inch diameter tree limbs down.

Thunderstorm Wind in DODGE, WISCONSIN
From 12-JUN-17 18:06:00 to 12-JUN-17 18:18:00 (CST-6)
Location: LOMIRA
Magnitude: 56.00 EG
Property damage: 3.00K
Crop damage: 0.00K
Reported by: Public

Large tree limbs down in Lomira.

Thunderstorm Wind in DODGE, WISCONSIN
From 12-JUN-17 17:55:00 to 12-JUN-17 18:10:00 (CST-6)
Location: BEAVER DAM ARPT
Magnitude: 56.00 EG
Property damage: 3.00K
Crop damage: 0.00K
Reported by: Amateur Radio

Many tree limbs down on southwest side of Beaver Dam.

Thunderstorm Wind in DODGE, WISCONSIN
From 12-JUN-17 18:00:00 to 12-JUN-17 18:15:00 (CST-6)
Location: MAYVILLE
Magnitude: 70.00 EG
Property damage: 50.00K
Crop damage: 0.00K
Reported by: Public

Numerous trees and power lines down throughout Mayville. Some trees uprooted, others snapped. A large tree on a house and trees down on vehicles. City Works Department using front end loaders to clear the streets from fallen trees.

Thunderstorm Wind in DODGE, WISCONSIN
From 12-JUN-17 17:46:00 to 12-JUN-17 17:53:00 (CST-6)
Location: RANDOLPH
Magnitude: 52.00 EG
Property damage: 1.00K
Crop damage: 0.00K
Reported by: Amateur Radio

One 12 inch diameter tree down.

Thunderstorm Wind in DODGE, WISCONSIN
From 12-JUN-17 18:01:00 to 12-JUN-17 18:05:00 (CST-6)
Location: JUNEAU
Magnitude: 52.00 EG
Reported by: Amateur Radio

Estimated 60 mph wind gust.

Thunderstorm Wind in DODGE, WISCONSIN
From 12-JUN-17 18:00:00 to 12-JUN-17 18:05:00 (CST-6)
Location: LEROY
Magnitude: 53.00 MG
Reported by: Mesonet

Measured 61 mph at Horicon Marsh RAWS site.

Thunderstorm Wind in WASHINGTON, WISCONSIN
From 12-JUN-17 18:20:00 to 12-JUN-17 18:38:00 (CST-6)
Location: KEWASKUM
Magnitude: 70.00 EG
Property damage: 25.00K
Crop damage: 0.00K
Reported by: Public

Numerous fallen trees in Kewaskum. Some roads blocked by fallen trees. Minor structural damage from high winds or fallen trees.

Thunderstorm Wind in WASHINGTON, WISCONSIN
From 12-JUN-17 18:20:00 to 12-JUN-17 18:55:00 (CST-6)
Location: HARTFORD
Magnitude: 56.00 EG
Property damage: 25.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Numerous trees and power lines down across the county.

Thunderstorm Wind in WASHINGTON, WISCONSIN
From 12-JUN-17 18:30:00 to 12-JUN-17 18:45:00 (CST-6)
Location: MAYFIELD
Magnitude: 56.00 EG
Property damage: 1.00K
Reported by: Trained Spotter

A horse trailer was blown over.

Thunderstorm Wind in DODGE, WISCONSIN
From 12-JUN-17 18:10:00 to 12-JUN-17 18:15:00 (CST-6)
Location: LOMIRA
Magnitude: 70.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Public

Many large trees snapped at ground level throughout a golf course.