Several supercell thunderstorms developed ahead of a slow moving cold front.  The storms produced damaging winds from wet microbursts and quite a bit of large hail.
High winds and hail from the storms combined to topple trees, damage crops and knock down power lines from Ogdensburg (Waupaca Co.) to Weyauwega (Waupaca Co.).  Hail was piled up 9 inches deep in the ditches along Butternut Ridge Road between the cities of Waupaca and Weyauwega after the storm passed.

Hail in MARATHON, WISCONSIN
From 18-JUL-07 12:50:00 to 18-JUL-07 12:50:00 (CST-6)
Location: HATLEY
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Hail in WAUPACA, WISCONSIN
From 18-JUL-07 13:22:00 to 18-JUL-07 13:38:00 (CST-6)
Location: NORTHLAND
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

Hail in WAUPACA, WISCONSIN
From 18-JUL-07 13:44:00 to 18-JUL-07 13:44:00 (CST-6)
Location: OGDENSBURG
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

Hail in WAUPACA, WISCONSIN
From 18-JUL-07 14:03:00 to 18-JUL-07 14:03:00 (CST-6)
Location: WAUPACA
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

The amateur radio operator who reported the hail also observed a non-rotating wall cloud.

Thunderstorm Wind in WAUPACA, WISCONSIN
From 18-JUL-07 14:10:00 to 18-JUL-07 14:10:00 (CST-6)
Location: WAUPACA
Magnitude: 61.00 EG
Property damage: 0.00K
Crop damage: 50.00K
Reported by: Trained Spotter

High winds from thunderstorms snapped and uprooted several trees along Highway 54.  The snapped trees were up to 2 feet in diameter.  Hail accompanied the strong winds, stripping corn stalks on a 1,000 acre farm between Waupaca and Weyauwega.

Thunderstorm Wind in WAUPACA, WISCONSIN
From 18-JUL-07 13:55:00 to 18-JUL-07 13:55:00 (CST-6)
Location: WAUPACA
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Thunderstorm winds downed many large, up to 8 inches in diameter, tree branches north of Waupaca.

Thunderstorm Wind in WAUPACA, WISCONSIN
From 18-JUL-07 14:08:00 to 18-JUL-07 14:08:00 (CST-6)
Location: WEYAUWEGA
Magnitude: 65.00 EG
Property damage: 10.00K
Reported by: Emergency Manager

Straight-line thunderstorm winds downed numerous large trees, knocking some of the trees onto houses.  Two large maple trees in the backyard of one residence broke windows, damaged siding and tore soffits and rain gutters from the house.  Oakwood Cemetery sustained widespread damage to large trees and some headstones.  The damage there was still being cleaned up 6 days after the storm.

Thunderstorm Wind in BROWN, WISCONSIN
From 18-JUL-07 14:20:00 to 18-JUL-07 14:20:00 (CST-6)
Location: SUAMICO
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Thunderstorm winds downed trees in Suamico.

Thunderstorm Wind in BROWN, WISCONSIN
From 18-JUL-07 14:55:00 to 18-JUL-07 14:55:00 (CST-6)
Location: GREEN BAY
Magnitude: 70.00 EG
Property damage: 237.00K
Crop damage: 0.00K
Reported by: Amateur Radio

High winds from thunderstorms downed numerous trees on the northeast side of Green Bay.  Some of the trees landed on roofs in the 1800 block of East Shore Drive, damaging at least 6 houses.

Thunderstorm Wind in WAUPACA, WISCONSIN
From 18-JUL-07 19:06:00 to 18-JUL-07 19:06:00 (CST-6)
Location: RURAL
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Two large trees were uprooted by straight-line thunderstorm winds.

Thunderstorm Wind in OCONTO, WISCONSIN
From 18-JUL-07 14:07:00 to 18-JUL-07 14:07:00 (CST-6)
Location: SOBIESKI
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Straight-line thunderstorm winds downed several small trees near Sobieski.

Thunderstorm Wind in WAUPACA, WISCONSIN
From 18-JUL-07 13:22:00 to 18-JUL-07 13:38:00 (CST-6)
Location: NORTHLAND
Magnitude: 57.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

The thunderstorm that dropped golf ball size hail as it moved across Waupaca County also produced high winds that knocked down numerous trees.

Hail in WAUPACA, WISCONSIN
From 18-JUL-07 14:13:00 to 18-JUL-07 14:13:00 (CST-6)
Location: WEYAUWEGA
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

Hail in WOOD, WISCONSIN
From 18-JUL-07 18:12:00 to 18-JUL-07 18:12:00 (CST-6)
Location: MARSHFIELD
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Thunderstorm Wind in PORTAGE, WISCONSIN
From 18-JUL-07 13:20:00 to 18-JUL-07 13:20:00 (CST-6)
Location: ROSHOLT
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

High winds from thunderstorms knocked down trees and tree limbs northeast of Rosholt.