Thunderstorms developed in the Dakotas on the night of June 10th in response to very warm and humid air interacting with a stalled frontal system. The line of storms moved across Minnesota and into western Wisconsin on the morning of June 11th and continued across much of central, north central and northeast Wisconsin during the late morning and early afternoon hours.
The storms produced damaging winds, mainly north of Highway 29, downing numerous trees and power lines, flattening at least 2 barns, and causing roof damage to several other buildings. At one point, 55,000 people were without power.

Hail in MARATHON, WISCONSIN
From 11-JUN-17 10:50:00 to 11-JUN-17 10:50:00 (CST-6)
Location: EDGAR
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Nickel size hail fell near Edgar.

Hail in LINCOLN, WISCONSIN
From 11-JUN-17 11:03:00 to 11-JUN-17 11:03:00 (CST-6)
Location: MERRILL
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

Nickel size hail fell near Merrill.

Thunderstorm Wind in MARATHON, WISCONSIN
From 11-JUN-17 10:40:00 to 11-JUN-17 10:40:00 (CST-6)
Location: CHEROKEE
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Thunderstorm winds sent tree branches flying across the road east of Colby.

Thunderstorm Wind in LINCOLN, WISCONSIN
From 11-JUN-17 11:10:00 to 11-JUN-17 11:10:00 (CST-6)
Location: DOERING
Magnitude: 70.00 EG
Property damage: 2.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Thunderstorm winds carried a 15 to 20 foot section of barn roof 400 to 500 yards into a field.

Thunderstorm Wind in LINCOLN, WISCONSIN
From 11-JUN-17 11:10:00 to 11-JUN-17 11:10:00 (CST-6)
Location: BLOOMVILLE
Magnitude: 70.00 EG
Property damage: 20.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Thunderstorm winds destroyed a barn southwest of Gleason.

Thunderstorm Wind in LINCOLN, WISCONSIN
From 11-JUN-17 11:10:00 to 11-JUN-17 11:10:00 (CST-6)
Location: GLEASON
Magnitude: 61.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: County Official

Thunderstorm winds downed multiple trees in Gleason.

Thunderstorm Wind in ONEIDA, WISCONSIN
From 11-JUN-17 11:10:00 to 11-JUN-17 11:10:00 (CST-6)
Location: LAKE TOMAHAWK
Magnitude: 56.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

Thunderstorm winds snapped 18 inch diameter trees about 15 feet above the ground.

Thunderstorm Wind in MARATHON, WISCONSIN
From 11-JUN-17 11:10:00 to 11-JUN-17 11:10:00 (CST-6)
Location: RINGLE
Magnitude: 56.00 EG
Property damage: 2.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Thunderstorm winds downed trees and tore shingles from roofs.

Thunderstorm Wind in VILAS, WISCONSIN
From 11-JUN-17 11:12:00 to 11-JUN-17 11:12:00 (CST-6)
Location: SAYNER
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Employee

Thunderstorm winds uprooted a few trees near the intersection of Highway 155 and County Road N.

Thunderstorm Wind in ONEIDA, WISCONSIN
From 11-JUN-17 11:19:00 to 11-JUN-17 11:19:00 (CST-6)
Location: MINOCQUA
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Thunderstorm winds downed 4 to 6 inch diameter trees.

Thunderstorm Wind in ONEIDA, WISCONSIN
From 11-JUN-17 11:36:00 to 11-JUN-17 11:36:00 (CST-6)
Location: SUGAR CAMP
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Thunderstorm wind downed numerous trees and power lines.

Thunderstorm Wind in LANGLADE, WISCONSIN
From 11-JUN-17 11:27:00 to 11-JUN-17 11:27:00 (CST-6)
Location: ANTIGO
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Thunderstorm winds downed trees and power lines in Antigo.

Thunderstorm Wind in SHAWANO, WISCONSIN
From 11-JUN-17 11:40:00 to 11-JUN-17 11:40:00 (CST-6)
Location: BOWLER
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Social Media

Thunderstorm winds snapped a tree limb in Bowler.

Thunderstorm Wind in FOREST, WISCONSIN
From 11-JUN-17 11:45:00 to 11-JUN-17 11:45:00 (CST-6)
Location: LAONA
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Thunderstorm winds downed trees and power lines across Forest County. The time of this event is an estimate based on radar data.

Thunderstorm Wind in OCONTO, WISCONSIN
From 11-JUN-17 12:06:00 to 11-JUN-17 12:06:00 (CST-6)
Location: SURING
Magnitude: 56.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Thunderstorm winds downed numerous trees and power lines in Suring.

Thunderstorm Wind in MENOMINEE (C), WISCONSIN
From 11-JUN-17 11:53:00 to 11-JUN-17 11:53:00 (CST-6)
Location: KESHENA
Magnitude: 56.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Thunderstorm winds downed multiple trees and power lines across Keshena. Highway 55 had to be closed due to downed trees in the road. The time of this event is an estimate based on radar data.

Thunderstorm Wind in OCONTO, WISCONSIN
From 11-JUN-17 12:08:00 to 11-JUN-17 12:08:00 (CST-6)
Location: BREED
Magnitude: 65.00 EG
Property damage: 3.50K
Crop damage: 0.00K
Reported by: State Official

Thunderstorm winds heavily damaged the roof of a cottage and downed several trees near Breed.

Thunderstorm Wind in OCONTO, WISCONSIN
From 11-JUN-17 12:13:00 to 11-JUN-17 12:13:00 (CST-6)
Location: KELLY BROOK
Magnitude: 56.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Thunderstorm winds downed numerous trees northwest of Oconto Falls.

Thunderstorm Wind in OCONTO, WISCONSIN
From 11-JUN-17 12:20:00 to 11-JUN-17 12:20:00 (CST-6)
Location: LENA
Magnitude: 65.00 EG
Property damage: 30.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Thunderstorm winds caused a barn to collapse and tore the roof from another.

Thunderstorm Wind in MARINETTE, WISCONSIN
From 11-JUN-17 12:34:00 to 11-JUN-17 12:34:00 (CST-6)
Location: WAUSAUKEE
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Pea size hail fell and thunderstorm winds downed trees across Highway 141.

Thunderstorm Wind in DOOR, WISCONSIN
From 11-JUN-17 12:55:00 to 11-JUN-17 12:55:00 (CST-6)
Location: STURGEON BAY
Magnitude: 56.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Thunderstorm winds downed trees and power lines in Sturgeon Bay, Baileys Harbor, Fish Creek and Sister Bay. The time of this report was estimated for Sturgeon Bay based on radar data.

Thunderstorm Wind in OCONTO, WISCONSIN
From 11-JUN-17 12:30:00 to 11-JUN-17 12:30:00 (CST-6)
Location: OCONTO
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Thunderstorm winds overturned a pickup truck that was pulling a large trailer on Highway 41 near exit 198 outside of Oconto.

Lightning in MENOMINEE (C), WISCONSIN
From 11-JUN-17 11:53:00 to 11-JUN-17 11:53:00 (CST-6)
Location: KESHENA
Property damage: 25.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Lightning caused a house fire in Keshena.