Two rounds of storms moved across portions of western Wisconsin on August 10th. The first round occurred in the morning and produced a wind gust of 58 mph at the Black River Falls airport (Jackson County) and blew down some trees near New Miner (Juneau County) and Friendship (Adams County). The second round of storms occurred in the afternoon and produced a brief EF-0 tornado near Burton (Grant County). There were also several reports of wind gusts of 60 to 65 mph and numerous trees down across other parts of Grant County.

Thunderstorm Wind in JACKSON, WISCONSIN
From 10-AUG-20 05:55:00 to 10-AUG-20 05:55:00 (CST-6)
Location: BLACK RIVER FALLS AR
Magnitude: 50.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

The automated weather observing equipment at the Black River Falls airport measured a 58 mph wind gust.

Thunderstorm Wind in GRANT, WISCONSIN
From 10-AUG-20 11:30:00 to 10-AUG-20 11:30:00 (CST-6)
Location: PATCH GROVE
Magnitude: 55.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Fire Department/Rescue

A 63 mph wind gust occurred in Patch Grove.

Thunderstorm Wind in JUNEAU, WISCONSIN
From 10-AUG-20 06:48:00 to 10-AUG-20 06:48:00 (CST-6)
Location: NEW MINER
Magnitude: 52.00 EG
Property damage: 2.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Trees were blown down northeast of New Miner.

Thunderstorm Wind in ADAMS, WISCONSIN
From 10-AUG-20 07:01:00 to 10-AUG-20 07:01:00 (CST-6)
Location: FRIENDSHIP
Magnitude: 53.00 EG
Property damage: 2.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Trees were blown down north of Friendship.

Thunderstorm Wind in GRANT, WISCONSIN
From 10-AUG-20 11:33:00 to 10-AUG-20 11:33:00 (CST-6)
Location: BLOOMINGTON
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Fire Department/Rescue

An estimated 60 mph wind gust occurred in Bloomington.

Thunderstorm Wind in GRANT, WISCONSIN
From 10-AUG-20 11:50:00 to 10-AUG-20 11:50:00 (CST-6)
Location: LANCASTER
Magnitude: 52.00 EG
Property damage: 4.00K
Crop damage: 0.00K
Reported by: Fire Department/Rescue

An estimated 60 mph wind gust occurred in Lancaster causing power outages.

Thunderstorm Wind in GRANT, WISCONSIN
From 10-AUG-20 12:10:00 to 10-AUG-20 12:10:00 (CST-6)
Location: UNION
Magnitude: 54.00 EG
Property damage: 1.00K
Crop damage: 0.00K
Reported by: Trained Spotter

An estimated 62 mph wind gust occurred north of Platteville causing some tree damage.

Thunderstorm Wind in GRANT, WISCONSIN
From 10-AUG-20 11:42:00 to 10-AUG-20 11:42:00 (CST-6)
Location: POTOSI
Magnitude: 45.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Trees and power lines were blown down in Potosi.

Thunderstorm Wind in GRANT, WISCONSIN
From 10-AUG-20 12:12:00 to 10-AUG-20 12:12:00 (CST-6)
Location: PLATTEVILLE
Magnitude: 42.00 EG
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Public

Trees were blown down in Platteville. One tree fell on a house and four roads were blocked by the downed trees.

Thunderstorm Wind in GRANT, WISCONSIN
From 10-AUG-20 12:11:00 to 10-AUG-20 12:11:00 (CST-6)
Location: PLATTEVILLE
Magnitude: 42.00 EG
Property damage: 4.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Trees were damaged and power outages occurred just west of Platteville.

Thunderstorm Wind in GRANT, WISCONSIN
From 10-AUG-20 11:50:00 to 10-AUG-20 11:50:00 (CST-6)
Location: CORNELIA
Magnitude: 42.00 EG
Property damage: 2.00K
Crop damage: 0.00K
Reported by: Public

Trees were blown down east of Potosi.

Thunderstorm Wind in GRANT, WISCONSIN
From 10-AUG-20 11:17:00 to 10-AUG-20 11:17:00 (CST-6)
Location: GLENHAVEN
Magnitude: 46.00 EG
Property damage: 2.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Trees were snapped off near Glen Haven.

Thunderstorm Wind in GRANT, WISCONSIN
From 10-AUG-20 11:45:00 to 10-AUG-20 11:45:00 (CST-6)
Location: LANCASTER ARPT
Magnitude: 46.00 EG
Property damage: 30.00K
Crop damage: 0.00K
Reported by: Broadcast Media

A pole barn was destroyed south of Lancaster.

Tornado in GRANT, WISCONSIN
From 10-AUG-20 11:32:00 to 10-AUG-20 11:34:00 (CST-6)
Location: MC CARTNEY
Tornado F-scale: EF0
Property damage: 15.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

A brief tornado touched down south of Burton and was on the ground for about a half mile. The tornado damaged two farm outbuildings, hardwood trees and downed power lines.