A cold front moved across southwest and central Wisconsin late in the evening of August 11, triggering a line of severe thunderstorms. Storm spotters, law enforcement officials, amateur radio operators and the public reported wind gusts of up to 70 mph, which knocked down trees and power lines.

Thunderstorm Wind in JUNEAU, WISCONSIN
From 11-AUG-07 22:16:00 to 11-AUG-07 22:16:00 (CST-6)
Location: (VOK)VOLK AAF CAMP D
Magnitude: 51.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

Thunderstorm Wind in ADAMS, WISCONSIN
From 11-AUG-07 22:35:00 to 11-AUG-07 22:35:00 (CST-6)
Location: WHITE CREEK
Magnitude: 56.00 EG
Property damage: 0.80K
Crop damage: 0.00K
Reported by: Amateur Radio

Trees were blown down and one blocked a road.

Thunderstorm Wind in ADAMS, WISCONSIN
From 11-AUG-07 22:45:00 to 11-AUG-07 22:45:00 (CST-6)
Location: ADAMS
Magnitude: 61.00 EG
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Numerous trees were blown down, several on nearby homes.  Power lines were also knocked down causing house fires.  Railroad crossings were also blown down.

Thunderstorm Wind in LA CROSSE, WISCONSIN
From 11-AUG-07 21:49:00 to 11-AUG-07 21:49:00 (CST-6)
Location: LA CROSSE
Magnitude: 54.00 EG
Property damage: 0.50K
Crop damage: 0.00K
Reported by: Amateur Radio

Trees were blown down in the Town of Shelby.

Thunderstorm Wind in MONROE, WISCONSIN
From 11-AUG-07 21:49:00 to 11-AUG-07 21:49:00 (CST-6)
Location: WARRENS
Magnitude: 61.00 EG
Property damage: 4.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Several trees were blown down in Jellystone Park.  One tree landed on a camper and injured someone.

Thunderstorm Wind in LA CROSSE, WISCONSIN
From 11-AUG-07 21:55:00 to 11-AUG-07 21:55:00 (CST-6)
Location: LA CROSSE
Magnitude: 54.00 EG
Property damage: 0.50K
Crop damage: 0.00K
Reported by: Amateur Radio

Trees were reported down at Goose Island.

Thunderstorm Wind in MONROE, WISCONSIN
From 11-AUG-07 22:00:00 to 11-AUG-07 22:00:00 (CST-6)
Location: WARRENS
Magnitude: 61.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: COOP Observer

Widespread trees down, some with 15 inch diameters.

Thunderstorm Wind in JUNEAU, WISCONSIN
From 11-AUG-07 22:25:00 to 11-AUG-07 22:25:00 (CST-6)
Location: SOUTH NECEDAH
Magnitude: 59.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Measured wind gust by Fire Weather RAWS site.

Thunderstorm Wind in JUNEAU, WISCONSIN
From 11-AUG-07 22:45:00 to 11-AUG-07 22:45:00 (CST-6)
Location: LYNDON STATION
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

Thunderstorm Wind in MONROE, WISCONSIN
From 11-AUG-07 21:41:00 to 11-AUG-07 21:41:00 (CST-6)
Location: CATARACT
Magnitude: 54.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Thunderstorm Wind in TREMPEALEAU, WISCONSIN
From 11-AUG-07 20:45:00 to 11-AUG-07 20:45:00 (CST-6)
Location: INDEPENDENCE
Magnitude: 55.00 EG
Property damage: 3.00K
Crop damage: 0.00K
Reported by: Public

Many 2 to 4 inch diameter branches were blown down.  Large trees were also knocked down and power outages lasted up to six hours in the area.

Thunderstorm Wind in BUFFALO, WISCONSIN
From 11-AUG-07 21:20:00 to 11-AUG-07 21:20:00 (CST-6)
Location: BUFFALO CITY
Magnitude: 61.00 EG
Property damage: 2.50K
Crop damage: 0.00K
Reported by: Law Enforcement

Winds gusted up to 70 mph and knocked trees down.

Thunderstorm Wind in LA CROSSE, WISCONSIN
From 11-AUG-07 21:40:00 to 11-AUG-07 21:40:00 (CST-6)
Location: HOLMEN
Magnitude: 52.00 EG
Property damage: 0.50K
Crop damage: 0.00K
Reported by: NWS Employee

One 5 inch diameter tree and a 20 foot tall pine were uprooted.

Thunderstorm Wind in JUNEAU, WISCONSIN
From 11-AUG-07 22:28:00 to 11-AUG-07 22:28:00 (CST-6)
Location: NECEDAH HORNSBURG AR
Magnitude: 56.00 EG
Property damage: 0.80K
Crop damage: 0.00K
Reported by: Amateur Radio

Small trees down.

Thunderstorm Wind in JUNEAU, WISCONSIN
From 11-AUG-07 22:28:00 to 11-AUG-07 22:28:00 (CST-6)
Location: LEMONWEIR
Magnitude: 56.00 EG
Property damage: 0.50K
Crop damage: 0.00K
Reported by: Amateur Radio

Large tree down.

Thunderstorm Wind in ADAMS, WISCONSIN
From 11-AUG-07 22:30:00 to 11-AUG-07 22:30:00 (CST-6)
Location: STRONGS PRAIRIE
Magnitude: 56.00 EG
Property damage: 0.50K
Crop damage: 0.00K
Reported by: Law Enforcement

Tree down.

Thunderstorm Wind in ADAMS, WISCONSIN
From 11-AUG-07 22:30:00 to 11-AUG-07 22:30:00 (CST-6)
Location: DELLWOOD
Magnitude: 56.00 EG
Property damage: 1.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Trees down.

Thunderstorm Wind in JUNEAU, WISCONSIN
From 11-AUG-07 22:30:00 to 11-AUG-07 22:30:00 (CST-6)
Location: SOUTH NECEDAH
Magnitude: 59.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: COOP Observer

At least 6 trees down. Largest tree was 14 inches in diameter. Minor damage also to fence and barn.

Thunderstorm Wind in JUNEAU, WISCONSIN
From 11-AUG-07 22:33:00 to 11-AUG-07 22:33:00 (CST-6)
Location: SOUTH NECEDAH
Magnitude: 59.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

Trees down.

Thunderstorm Wind in MONROE, WISCONSIN
From 11-AUG-07 22:05:00 to 11-AUG-07 22:05:00 (CST-6)
Location: TUNNEL CITY
Magnitude: 56.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Hail in BUFFALO, WISCONSIN
From 11-AUG-07 21:14:00 to 11-AUG-07 21:14:00 (CST-6)
Location: GARDEN VLY
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Thunderstorm Wind in LA CROSSE, WISCONSIN
From 11-AUG-07 21:35:00 to 11-AUG-07 21:35:00 (CST-6)
Location: MINDORO
Magnitude: 52.00 EG
Property damage: 2.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Power line down.

Thunderstorm Wind in MONROE, WISCONSIN
From 11-AUG-07 21:36:00 to 11-AUG-07 21:36:00 (CST-6)
Location: CATARACT
Magnitude: 56.00 EG
Property damage: 2.50K
Crop damage: 0.00K
Reported by: Emergency Manager

Power lines and trees down.

Thunderstorm Wind in LA CROSSE, WISCONSIN
From 11-AUG-07 21:44:00 to 11-AUG-07 21:44:00 (CST-6)
Location: LYTLE
Magnitude: 52.00 EG
Property damage: 0.50K
Crop damage: 0.00K
Reported by: Law Enforcement

Tree down.

Thunderstorm Wind in LA CROSSE, WISCONSIN
From 11-AUG-07 21:46:00 to 11-AUG-07 21:46:00 (CST-6)
Location: WEST SALEM
Magnitude: 52.00 EG
Property damage: 3.50K
Crop damage: 0.00K
Reported by: Amateur Radio

Tree down on a car in veterns park.

Thunderstorm Wind in JACKSON, WISCONSIN
From 11-AUG-07 21:32:00 to 11-AUG-07 21:32:00 (CST-6)
Location: SHAMROCK
Magnitude: 54.00 EG
Property damage: 0.50K
Crop damage: 0.00K
Reported by: Law Enforcement

A large tree was blown down.

Thunderstorm Wind in ADAMS, WISCONSIN
From 11-AUG-07 22:50:00 to 11-AUG-07 22:50:00 (CST-6)
Location: BROOKS
Magnitude: 56.00 EG
Property damage: 4.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Trees were blown down across Highway 82 and widespread limbs were down. There were also reported power outages.