Numerous showers and thunderstorms developed along a slowly moving cold front across west central Wisconsin.  During the afternoon, a line of strong storms developed in southeast Minnesota, and raced northeast across west central Wisconsin, and caused several areas of downed power lines, many trees, and a radio tower near Eau Claire, Wisconsin.

Thunderstorm Wind in CHIPPEWA, WISCONSIN
From 24-MAY-12 15:28:00 to 24-MAY-12 15:30:00 (CST-6)
Location: (EAU)EAU CLAIRE ARPT
Magnitude: 61.00 EG
Property damage: 100.00K
Crop damage: 0.00K
Reported by: Trained Spotter

An airport hangar at the Chippewa Valley Regional Airport was destroyed by severe straight line winds.  In addition, several large trees, up to 12 inches in diameter, were blown down near the north side of the airport.

Thunderstorm Wind in CHIPPEWA, WISCONSIN
From 24-MAY-12 15:30:00 to 24-MAY-12 15:33:00 (CST-6)
Location: (EAU)EAU CLAIRE ARPT
Magnitude: 61.00 EG
Property damage: 50.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Several trees and power lines down were blown down from near Highway T and 30th Avenue, northeast to 50th Avenue. In addition, a large barn collapsed near County Hwy T and 30th Avenue.

Hail in DUNN, WISCONSIN
From 24-MAY-12 12:27:00 to 24-MAY-12 12:27:00 (CST-6)
Location: MENOMONIE
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in CHIPPEWA, WISCONSIN
From 24-MAY-12 15:20:00 to 24-MAY-12 15:20:00 (CST-6)
Location: BLOOMER
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Storm Chaser

Thunderstorm Wind in DUNN, WISCONSIN
From 24-MAY-12 14:48:00 to 24-MAY-12 14:50:00 (CST-6)
Location: EAU GALLE
Magnitude: 56.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

Numerous trees were blown down from southwest of Eau Galle, northeast across Lake Eau Galle, which is north of the town of Eau Galle.

Thunderstorm Wind in EAU CLAIRE, WISCONSIN
From 24-MAY-12 15:25:00 to 24-MAY-12 15:28:00 (CST-6)
Location: EAU CLAIRE
Magnitude: 65.00 EG
Property damage: 250.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Widespread tree and power line damage occurred in the northwest side of Eau Claire. A trained spotter in his truck had severe straight line winds move it approximately four feet.  The hardest hit area was around Carson Park and the Lakeview Cemetery where over 2000 soft and hardwood healthy trees were blown down.  There were some residential areas that were affected by fallen trees and other debris which damaged their homes and cars. Plus, a 200 foot radio tower was blown down.

Thunderstorm Wind in CHIPPEWA, WISCONSIN
From 24-MAY-12 15:30:00 to 24-MAY-12 15:38:00 (CST-6)
Location: (EAU)EAU CLAIRE ARPT
Magnitude: 61.00 EG
Property damage: 500.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Numerous trees were uprooted in the Village of Lake Hallie, or northeast of Eau Claire airport. In addition, several of the trees landed on houses and blocked roads, near 20th to 35th Avenue, and along 115th to 130th Street.  Several of the trees had bases up to 3 feet in diameter, which caused damage to buildings, flipped over a recreational vehicle, and caused multiple power lines and poles to blow down in Chippewa Falls, Wisconsin.