Thunderstorms developed across northeast Wisconsin during the evening hours ahead of an approaching cold front.  The strongest storms produced a swath of damaging winds, with wind gusts of 60 to 80 mph, and isolated tornadoes.

Thunderstorm Wind in MARATHON, WISCONSIN
From 28-JUL-21 20:12:00 to 28-JUL-21 20:13:00 (CST-6)
Location: HATLEY
Magnitude: 61.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Social Media

Thunderstorm winds flattened a barn and produced sporadic tree damage near Hatley. The time of this event is an estimate based on radar data.

Thunderstorm Wind in MARATHON, WISCONSIN
From 28-JUL-21 20:15:00 to 28-JUL-21 20:16:00 (CST-6)
Location: HATLEY
Magnitude: 61.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

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

Thunderstorm Wind in SHAWANO, WISCONSIN
From 28-JUL-21 20:15:00 to 28-JUL-21 20:16:00 (CST-6)
Location: BOWLER
Magnitude: 56.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Thunderstorm winds downed trees in the Stockbridge-Munsee Reservation. The time of this event is an estimate based on radar data.

Thunderstorm Wind in PORTAGE, WISCONSIN
From 28-JUL-21 20:50:00 to 28-JUL-21 20:51:00 (CST-6)
Location: NELSONVILLE
Magnitude: 61.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Thunderstorm winds snapped numerous trees near the town of New Hope. The time of this event is an estimate based on radar data.

Thunderstorm Wind in PORTAGE, WISCONSIN
From 28-JUL-21 20:55:00 to 28-JUL-21 20:56:00 (CST-6)
Location: NEW HOPE
Magnitude: 61.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Social Media

Thunderstorm winds downed numerous trees in Amherst Junction. The time of this event is an estimate based on radar data.

Thunderstorm Wind in WAUPACA, WISCONSIN
From 28-JUL-21 20:53:00 to 28-JUL-21 20:55:00 (CST-6)
Location: IOLA
Magnitude: 56.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Thunderstorm winds downed several trees near Iola. The time of this event is an estimate based on radar data.

Thunderstorm Wind in WAUPACA, WISCONSIN
From 28-JUL-21 21:14:00 to 28-JUL-21 21:17:00 (CST-6)
Location: RURAL
Magnitude: 61.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Social Media

Thunderstorm winds snapped multiple trees near Waupaca. The time of this event is an estimate based on radar data.

Thunderstorm Wind in WAUPACA, WISCONSIN
From 28-JUL-21 21:17:00 to 28-JUL-21 21:21:00 (CST-6)
Location: LITTLE HOPE
Magnitude: 56.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Social Media

Thunderstorm winds downed multiple trees near Waupaca. The time of this event is an estimate based on radar data.

Thunderstorm Wind in WAUPACA, WISCONSIN
From 28-JUL-21 21:17:00 to 28-JUL-21 21:21:00 (CST-6)
Location: LITTLE HOPE
Magnitude: 61.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Social Media

Thunderstorm winds downed and uprooted multiple trees and blew down a fence near Waupaca. The time of this event is an estimate based on radar data.

Thunderstorm Wind in WINNEBAGO, WISCONSIN
From 28-JUL-21 22:25:00 to 28-JUL-21 22:33:00 (CST-6)
Location: OMRO
Magnitude: 70.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Thunderstorm winds downed numerous trees and power lines in Omro. The time of this event is an estimate based on radar data.

Thunderstorm Wind in WINNEBAGO, WISCONSIN
From 28-JUL-21 22:25:00 to 28-JUL-21 22:33:00 (CST-6)
Location: OMRO
Magnitude: 70.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Social Media

Thunderstorm winds destroyed a barn and flipped a semi west northwest of Omro. The time of this event is an estimate based on radar data.

Thunderstorm Wind in WINNEBAGO, WISCONSIN
From 28-JUL-21 22:30:00 to 28-JUL-21 22:35:00 (CST-6)
Location: EUREKA
Magnitude: 70.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Thunderstorm winds downed numerous trees in Eureka. The time of this event is an estimate based on radar data.

Thunderstorm Wind in WINNEBAGO, WISCONSIN
From 28-JUL-21 22:27:00 to 28-JUL-21 22:30:00 (CST-6)
Location: OMRO
Magnitude: 70.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

Thunderstorm winds snapped and uprooted numerous trees between Omro and Waukau. The time of this event is an estimate based on radar data.

Thunderstorm Wind in MARATHON, WISCONSIN
From 28-JUL-21 20:00:00 to 28-JUL-21 20:03:00 (CST-6)
Location: WAUSAU
Magnitude: 55.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

A thunderstorm wind gust of 63 mph was measured at the Wausau Downtown Airport.

Thunderstorm Wind in WAUSHARA, WISCONSIN
From 28-JUL-21 22:14:00 to 28-JUL-21 22:16:00 (CST-6)
Location: BORTH
Magnitude: 56.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

Thunderstorm winds blew the roof off a metal pole building. The time of this event is an estimate based on radar data.

Tornado in MARATHON, WISCONSIN
From 28-JUL-21 20:18:00 to 28-JUL-21 20:19:00 (CST-6)
Location: PEPLIN
Tornado F-scale: EF0
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

A brief tornado formed at 9:18 pm CDT west of Bevent in Marathon County and continued southeast before dissipating at 9:19 pm CDT. The tornado produced damage to trees (DI 28, DOD 2,3) and a power pole (DI 24, DOD 2). Total path length is estimated to be 0.22 miles long, with a width of 100 yards. Peak wind estimated to be around 85 mph.

Tornado in WAUSHARA, WISCONSIN
From 28-JUL-21 22:06:00 to 28-JUL-21 22:08:00 (CST-6)
Location: BORTH
Tornado F-scale: EF0
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

A brief tornado formed at 11:06 pm CDT west northwest of Borth in Waushara County and continued southeast before dissipating at 11:08 pm CDT. The tornado produced damage to an outbuilding (DI 1, DOD 4,5). Total path length is estimated to be 0.47 miles long, with a width of 33 yards. Peak wind estimated to be around 80 mph.

Thunderstorm Wind in WINNEBAGO, WISCONSIN
From 28-JUL-21 22:27:00 to 28-JUL-21 22:28:00 (CST-6)
Location: OMRO
Magnitude: 63.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

A thunderstorm wind gust of 72 mph was measured in Omro.

Tornado in LINCOLN, WISCONSIN
From 28-JUL-21 19:40:00 to 28-JUL-21 19:42:00 (CST-6)
Location: MERRILL
Tornado F-scale: EF1
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

A tornado formed at 8:40 PM CDT near Pine River in southern Lincoln County and produced damage to dozens of trees, (DI 28, DOD 2,3,4), continuing south and entering Marathon County at 8:42 PM CDT. Total path length is estimated to be 2.68 miles long, with a width of 300 yards. Peak wind estimated to be 90 mph.

Tornado in MARATHON, WISCONSIN
From 28-JUL-21 19:42:00 to 28-JUL-21 19:44:00 (CST-6)
Location: GRANITE HGTS
Tornado F-scale: EF1
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

The tornado that formed at 8:40 PM CDT in southern Lincoln County crossed the county line at 8:42 PM CDT.  The tornado continued south and produced damage to dozens of trees, (DI 28, DOD 2,3,4) before ending near the intersection of Shady Lane Road and Hazelwood Lane at 8:44 PM CDT. Total path length is estimated to be 2.68 miles long, with a width of 300 yards. Peak wind estimated to be 90 mph.

Thunderstorm Wind in LINCOLN, WISCONSIN
From 28-JUL-21 19:07:00 to 28-JUL-21 19:08:00 (CST-6)
Location: TOMAHAWK
Magnitude: 56.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Thunderstorm winds downed multiple trees and power lines in Tomahawk. The time of this event is an estimate based on radar data.

Thunderstorm Wind in LINCOLN, WISCONSIN
From 28-JUL-21 19:20:00 to 28-JUL-21 19:21:00 (CST-6)
Location: SCHULTZ
Magnitude: 61.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Social Media

Thunderstorm winds downed and uprooted multiple trees and partially destroyed a barn near Otis. The time of this event is an estimate based on radar data.

Thunderstorm Wind in LINCOLN, WISCONSIN
From 28-JUL-21 19:23:00 to 28-JUL-21 19:24:00 (CST-6)
Location: IRMA
Magnitude: 61.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Social Media

Thunderstorm winds downed multiple trees and power lines in Irma. The time of this event is an estimate based on radar data.

Thunderstorm Wind in LINCOLN, WISCONSIN
From 28-JUL-21 19:39:00 to 28-JUL-21 19:41:00 (CST-6)
Location: MERRILL
Magnitude: 61.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Thunderstorm winds downed numerous trees and power lines in Merrill. The time of this event is an estimate based on radar data.

Thunderstorm Wind in MARATHON, WISCONSIN
From 28-JUL-21 19:50:00 to 28-JUL-21 19:51:00 (CST-6)
Location: GRANITE HGTS
Magnitude: 61.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Thunderstorm winds downed numerous trees near Brokaw. The time of this event is an estimate based on radar data.

Thunderstorm Wind in LINCOLN, WISCONSIN
From 28-JUL-21 19:42:00 to 28-JUL-21 19:43:00 (CST-6)
Location: MERRILL
Magnitude: 61.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Social Media

Thunderstorm winds downed multiple trees, tore a roof off a barn, and shredded corn fields. The time of this event is an estimate based on radar data.

Thunderstorm Wind in MARATHON, WISCONSIN
From 28-JUL-21 20:00:00 to 28-JUL-21 20:03:00 (CST-6)
Location: (AUW)WAUSAW MUNI ARP
Magnitude: 56.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

Thunderstorm winds snapped multiple trees and produced house damage in Rib Mountain. The time of this event is an estimate based on radar data.

Thunderstorm Wind in MARATHON, WISCONSIN
From 28-JUL-21 20:05:00 to 28-JUL-21 20:06:00 (CST-6)
Location: WAUSAU
Magnitude: 61.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Thunderstorm winds downed numerous trees and power lines in Wausau. The time of this event is an estimate based on radar data.