Severe thunderstorms formed in very unstable air ahead of a passing cold front. The worst of the damage from the storms occurred across east-central and parts of northeast Wisconsin. Thunderstorm winds downed numerous trees and some power lines, hail as large as golf balls fell, and a weak tornado touched down on the east side of Green Bay (Brown Co.). Heavy rain led to flooding in parts of east-central Wisconsin as the storms formed an east-west line that slowly moved southeast.

Thunderstorm Wind in WOOD, WISCONSIN
From 07-AUG-19 17:17:00 to 07-AUG-19 17:17:00 (CST-6)
Location: MARSHFIELD MUNI ARPT
Magnitude: 53.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

Thunderstorms produced a wind gust to 61 mph at Marshfield Municipal Airport.

Thunderstorm Wind in WINNEBAGO, WISCONSIN
From 07-AUG-19 18:59:00 to 07-AUG-19 18:59:00 (CST-6)
Location: (OSH)WITTMAN FLD OSH
Magnitude: 62.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

Thunderstorms produced a wind gust to 71 mph at Wittman Field in Oshkosh.

Thunderstorm Wind in WINNEBAGO, WISCONSIN
From 07-AUG-19 19:01:00 to 07-AUG-19 19:01:00 (CST-6)
Location: OSHKOSH
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Thunderstorm winds downed a couple of branches and a tree in the Oshkosh area.

Thunderstorm Wind in CALUMET, WISCONSIN
From 07-AUG-19 19:21:00 to 07-AUG-19 19:21:00 (CST-6)
Location: CHILTON
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Thunderstorm winds downed several trees and large branches on Water Street in Chilton.

Flood in BROWN, WISCONSIN
From 07-AUG-19 18:19:00 to 07-AUG-19 21:00:00 (CST-6)
Location: ALLOUEZ
Flood cause: Heavy Rain
Property damage: 1.00K
Crop damage: 0.00K
Reported by: NWS Employee

Urban flooding from heavy rainfall left two feet of standing water at the intersection of Shawano Avenue and Military Avenue in Green Bay. There were also reports of flooding on East Mason Street, Oneida Street and Cass Street.

Flash Flood in OUTAGAMIE, WISCONSIN
From 07-AUG-19 18:30:00 to 07-AUG-19 19:45:00 (CST-6)
Location: KIMBERLY
Flood cause: Heavy Rain
Property damage: 2.50K
Crop damage: 0.00K
Reported by: Law Enforcement

Heavy rainfall led to flash flooding that caused the closure of part of southbound Interstate Highway 441 near the Appleton-Little Chute border.

Hail in MARINETTE, WISCONSIN
From 07-AUG-19 14:40:00 to 07-AUG-19 14:40:00 (CST-6)
Location: COLEMAN
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Social Media

Golf ball size hail fell in Coleman.

Flood in KEWAUNEE, WISCONSIN
From 07-AUG-19 16:00:00 to 07-AUG-19 19:00:00 (CST-6)
Location: ALGOMA
Flood cause: Heavy Rain
Property damage: 0.50K
Crop damage: 0.00K
Reported by: 911 Call Center

Heavy rainfall caused flooding of several roads in and around Algoma.

Hail in ONEIDA, WISCONSIN
From 07-AUG-19 11:38:00 to 07-AUG-19 11:38:00 (CST-6)
Location: RHINELANDER
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Nickel size hail fell in Rhinelander.

Hail in FOREST, WISCONSIN
From 07-AUG-19 12:00:00 to 07-AUG-19 12:00:00 (CST-6)
Location: CRANDON
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Penny size hail fell east of Crandon.

Hail in MARINETTE, WISCONSIN
From 07-AUG-19 13:42:00 to 07-AUG-19 13:42:00 (CST-6)
Location: CRIVITZ MUNI ARPT
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Social Media

Penny size hail fell west of Crivitz.

Hail in MARINETTE, WISCONSIN
From 07-AUG-19 14:40:00 to 07-AUG-19 14:40:00 (CST-6)
Location: COLEMAN
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Nickel size hail fell in Coleman.

Hail in OCONTO, WISCONSIN
From 07-AUG-19 15:06:00 to 07-AUG-19 15:06:00 (CST-6)
Location: OCONTO
Magnitude: 1.50 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Walnut size hail fell in Oconto.

Hail in MARINETTE, WISCONSIN
From 07-AUG-19 14:32:00 to 07-AUG-19 14:32:00 (CST-6)
Location: CRIVITZ MUNI ARPT
Magnitude: 1.50 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Walnut size hail fell along County Highway P northwest of Pound.

Hail in CALUMET, WISCONSIN
From 07-AUG-19 18:05:00 to 07-AUG-19 18:05:00 (CST-6)
Location: HILBERT
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Social Media

Quarter size hail fell in Hilbert. The time of this event is an estimate based on radar data.

Tornado in BROWN, WISCONSIN
From 07-AUG-19 16:48:00 to 07-AUG-19 16:57:00 (CST-6)
Location: GREEN BAY
Tornado F-scale: EF0
Property damage: 50.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

A tornado quickly formed southeast of the city of Green Bay and moved southeast into the town of Bellevue. Three power poles sustained damage and a business sign was heavily damaged in Green Bay. The tornado continued southeast and damaged at least 100 trees along the path (DI 27 and 28, DOD 1-3). A poorly constructed carport lost part of its metal roof at an apartment building and a nearby house lost a couple shingles (DI 2, DOD 2).

Hail in BROWN, WISCONSIN
From 07-AUG-19 16:50:00 to 07-AUG-19 16:50:00 (CST-6)
Location: GREEN BAY
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Penny size hail fell on the east side of Green Bay.

Hail in OUTAGAMIE, WISCONSIN
From 07-AUG-19 18:02:00 to 07-AUG-19 18:02:00 (CST-6)
Location: APPLETON
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Nickel size hail fell in Appleton.

Hail in OUTAGAMIE, WISCONSIN
From 07-AUG-19 18:05:00 to 07-AUG-19 18:05:00 (CST-6)
Location: APPLETON
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Social Media

Quarter size hail fell in Appleton.

Hail in OUTAGAMIE, WISCONSIN
From 07-AUG-19 18:27:00 to 07-AUG-19 18:27:00 (CST-6)
Location: APPLETON
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Quarter size hail fell in Appleton.

Thunderstorm Wind in FOREST, WISCONSIN
From 07-AUG-19 12:19:00 to 07-AUG-19 12:19:00 (CST-6)
Location: PADUS
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Thunderstorm winds downed trees near Laona.

Thunderstorm Wind in MARINETTE, WISCONSIN
From 07-AUG-19 14:38:00 to 07-AUG-19 14:38:00 (CST-6)
Location: COLEMAN
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Fire Department/Rescue

Thunderstorm winds downed a power pole in Coleman. The time of this report is an estimate based on radar data.

Hail in BROWN, WISCONSIN
From 07-AUG-19 18:09:00 to 07-AUG-19 18:09:00 (CST-6)
Location: GREEN BAY
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Employee

Quarter size hail fell on the east side of Green Bay.

Hail in BROWN, WISCONSIN
From 07-AUG-19 18:17:00 to 07-AUG-19 18:17:00 (CST-6)
Location: GREEN BAY
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Nickel size hail fell in Green Bay.

Thunderstorm Wind in DOOR, WISCONSIN
From 07-AUG-19 15:21:00 to 07-AUG-19 15:21:00 (CST-6)
Location: DOOR CO ARPT
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Thunderstorm winds downed trees near Little Sturgeon Bay. The time of this report is an estimate based on radar data.

Thunderstorm Wind in DOOR, WISCONSIN
From 07-AUG-19 15:35:00 to 07-AUG-19 15:35:00 (CST-6)
Location: BRUSSELS
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Thunderstorm winds downed trees near Brussels. The time of this report is an estimate based on radar data.

Thunderstorm Wind in DOOR, WISCONSIN
From 07-AUG-19 15:35:00 to 07-AUG-19 15:35:00 (CST-6)
Location: MAPLEWOOD
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Thunderstorm winds downed several trees in Maplewood. The time of this report is an estimate based on radar data.

Thunderstorm Wind in OUTAGAMIE, WISCONSIN
From 07-AUG-19 15:59:00 to 07-AUG-19 15:59:00 (CST-6)
Location: BEAR CREEK
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Thunderstorm winds downed a couple of trees around Bear Creek.

Thunderstorm Wind in BROWN, WISCONSIN
From 07-AUG-19 16:55:00 to 07-AUG-19 16:55:00 (CST-6)
Location: BELLEVUE
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Thunderstorm winds downed several trees and power lines around Bellevue and Allouez.

Thunderstorm Wind in KEWAUNEE, WISCONSIN
From 07-AUG-19 17:05:00 to 07-AUG-19 17:05:00 (CST-6)
Location: WALHAIN
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Thunderstorm winds downed a couple of small trees and some branches at Highway 54 and County Highway H. The time of this report is an estimate based on radar data.

Thunderstorm Wind in SHAWANO, WISCONSIN
From 07-AUG-19 16:12:00 to 07-AUG-19 16:12:00 (CST-6)
Location: NAVARINO
Magnitude: 56.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Thunderstorm winds downed numerous trees over south-central and southeast Shawano County.