Pre-frontal clusters of thunderstorms became severe with powerful straight-line winds as they moved east-southeast at anywhere from 35 to 45 knots (40 to 52 mph) to the east-southeast.

Thunderstorm Wind in DANE, WISCONSIN
From 11-AUG-07 23:51:00 to 11-AUG-07 23:51:00 (CST-6)
Location: MT HOREB
Magnitude: 56.00 EG
Property damage: 2.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Powerful thunderstorm wind gusts to around 56 knots (65 mph) toppled saeveral large trees and branches.  A power-line was damaged.

Thunderstorm Wind in DANE, WISCONSIN
From 11-AUG-07 23:37:00 to 11-AUG-07 23:37:00 (CST-6)
Location: ROXBURY
Magnitude: 56.00 EG
Property damage: 2.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Powerful thunderstorm wind gusts to around 56 knots (65 mph) toppled saeveral large trees and branches.  A power-line was damaged.

Thunderstorm Wind in FOND DU LAC, WISCONSIN
From 11-AUG-07 23:40:00 to 11-AUG-07 23:40:00 (CST-6)
Location: FAIRWATER
Magnitude: 52.00 EG
Property damage: 2.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Powerful thunderstorm wind gusts to around 52 knots (60 mph) toppled saeveral large trees and branches.  A power-line was damaged.

Thunderstorm Wind in DODGE, WISCONSIN
From 11-AUG-07 23:38:00 to 11-AUG-07 23:38:00 (CST-6)
Location: RANDOLPH
Magnitude: 52.00 EG
Property damage: 2.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Powerful thunderstorm wind gusts to around 52 knots (60 mph) toppled saeveral large trees and branches.  A power-line was damaged.

Thunderstorm Wind in IOWA, WISCONSIN
From 11-AUG-07 23:40:00 to 11-AUG-07 23:40:00 (CST-6)
Location: BARNEVELD
Magnitude: 52.00 EG
Property damage: 2.00K
Crop damage: 0.00K
Reported by: Public

Powerful thunderstorm wind gusts to around 52 knots (60 mph) toppled saeveral large trees and branches.  A power-line was damaged.

Thunderstorm Wind in SAUK, WISCONSIN
From 11-AUG-07 22:45:00 to 11-AUG-07 22:45:00 (CST-6)
Location: LA VALLE
Magnitude: 56.00 EG
Property damage: 20.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Powerful thunderstorm wind gusts to around 56 knots (65 mph) toppled many trees and power-poles/power-lines in and around La Valle.

Thunderstorm Wind in SAUK, WISCONSIN
From 11-AUG-07 22:55:00 to 11-AUG-07 22:55:00 (CST-6)
Location: REEDSBURG
Magnitude: 56.00 EG
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Powerful thunderstorm wind gusts to around 56 knots (65 mph) toppled many trees and power-poles/power-lines in and around Reedsburg.

Thunderstorm Wind in GREEN LAKE, WISCONSIN
From 11-AUG-07 23:27:00 to 11-AUG-07 23:27:00 (CST-6)
Location: KINGSTON
Magnitude: 52.00 MG
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Powerful thunderstorm wind gusts to around 52 knots (60 mph) toppled many trees and a couple power-poles/power-lines in and around Kingston.

Thunderstorm Wind in COLUMBIA, WISCONSIN
From 11-AUG-07 23:12:00 to 11-AUG-07 23:12:00 (CST-6)
Location: WISCONSIN DELLS
Magnitude: 52.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Powerful thunderstorm wind gusts to around 52 knots (60 mph) toppled saeveral large trees and a power-pole/power-line.

Thunderstorm Wind in COLUMBIA, WISCONSIN
From 11-AUG-07 23:30:00 to 11-AUG-07 23:30:00 (CST-6)
Location: PARDEEVILLE
Magnitude: 52.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Powerful thunderstorm wind gusts to around 52 knots (60 mph) toppled saeveral large trees and branches.  A car-port was damaged by the tree debris.

Thunderstorm Wind in DANE, WISCONSIN
From 12-AUG-07 00:05:00 to 12-AUG-07 00:10:00 (CST-6)
Location: DOWNTOWN MADISON
Magnitude: 52.00 EG
Property damage: 20.00K
Crop damage: 0.00K
Reported by: Public

Powerful thunderstorm wind gusts to around 52 knots (60 mph) toppled saeveral large trees and branches.  Several power-lines were damaged.

Thunderstorm Wind in JEFFERSON, WISCONSIN
From 12-AUG-07 00:41:00 to 12-AUG-07 00:41:00 (CST-6)
Location: PALMYRA
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Employee

Powerful thunderstorm wind gusts to around 52 knots (60 mph) toppled saeveral large trees and branches.

Thunderstorm Wind in LAFAYETTE, WISCONSIN
From 12-AUG-07 00:20:00 to 12-AUG-07 00:20:00 (CST-6)
Location: BELMONT
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Powerful thunderstorm wind gusts to around 52 knots (60 mph) toppled saeveral large trees and branches.

Thunderstorm Wind in GREEN, WISCONSIN
From 12-AUG-07 00:08:00 to 12-AUG-07 00:08:00 (CST-6)
Location: NEW GLARUS
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Powerful thunderstorm wind gusts to around 52 knots (60 mph) toppled saeveral large trees and branches.

Lightning in DANE, WISCONSIN
From 12-AUG-07 00:00:00 to 12-AUG-07 00:00:00 (CST-6)
Location: BLACK EARTH
Property damage: 1.00K
Crop damage: 0.00K
Reported by: Newspaper

Lightning struck a blew apart a 60-foot pine tree which was about 30 feet from a residential home.  Part of the generated electrical current fried the home's telephone line.   The time is estimated within a plus or minus 15 minutes.

Thunderstorm Wind in MARQUETTE, WISCONSIN
From 11-AUG-07 23:05:00 to 11-AUG-07 23:15:00 (CST-6)
Location: OXFORD
Magnitude: 56.00 EG
Property damage: 100.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Powerful thunderstorm wind gusts to around 56 knots (65 mph) toppled many trees and power-poles/power-lines in a swath from Oxford to Montello.

Thunderstorm Wind in IOWA, WISCONSIN
From 11-AUG-07 23:25:00 to 11-AUG-07 23:25:00 (CST-6)
Location: HIGHLAND
Magnitude: 52.00 EG
Property damage: 2.00K
Crop damage: 0.00K
Reported by: Public

Powerful thunderstorm wind gusts to around 52 knots (60 mph) toppled saeveral large trees and branches.  A power-line was damaged.