A complex of thunderstorms developed across west-central Minnesota during the afternoon of July 27th and quickly moved eastward into east-central Minnesota, and west-central Wisconsin during the evening hours, and caused three tornadoes in west central Wisconsin.  There also were several areas of straight-line wind damage.

Thunderstorm Wind in POLK, WISCONSIN
From 27-JUL-10 18:05:00 to 27-JUL-10 18:13:00 (CST-6)
Location: CUSHING
Magnitude: 83.00 EG
Property damage: 80.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

Downburst damage was observed along a seven mile long path, oriented from northwest to southeast, in northwestern Polk County. The maximum width of the damage area was about 400 yards.  The most intense damage consisted of numerous large trees being snapped and uprooted, with substantial branch loss on the north side of Little Mirror Lake to near the intersection of County Road N and 195th St. A few trees fell on garages and homes. One barn was heavily damaged. Silo roofs were blown off.

Thunderstorm Wind in POLK, WISCONSIN
From 27-JUL-10 18:25:00 to 27-JUL-10 18:25:00 (CST-6)
Location: RANGE
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Numerous large pine trees were toppled.

Tornado in POLK, WISCONSIN
From 27-JUL-10 18:16:00 to 27-JUL-10 18:18:00 (CST-6)
Location: BALSAM LAKE
Tornado F-scale: EF0
Property damage: 100.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

A tornado traveled from west to east across the northern edge of the village of Balsam Lake.  A small grove of large trees was completely uprooted just north of downtown Balsam Lake.  There were 2 garages which has all sides blown in. Other large trees were snapped or uprooted, with a few ending up on houses. A shed was blown over.

Tornado in POLK, WISCONSIN
From 27-JUL-10 18:34:00 to 27-JUL-10 18:35:00 (CST-6)
Location: TURTLE LAKE
Tornado F-scale: EF1
Property damage: 100.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

A tornado traveled east-southeast, just north of the village of Turtle Lake.  It touched down in extreme eastern Polk County and moved into Barron County.  In Polk County, a large outbuilding was completely destroyed 1.5 miles north-northwest of Turtle Lake, with debris scattered downstream for hundreds of yards. Scattered large trees were snapped or uprooted.

Thunderstorm Wind in BARRON, WISCONSIN
From 27-JUL-10 18:50:00 to 27-JUL-10 18:53:00 (CST-6)
Location: BARRON
Magnitude: 56.00 EG
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Numerous large trees were uprooted or blown down, including some on power lines, and others across Highway 8.

Thunderstorm Wind in DUNN, WISCONSIN
From 27-JUL-10 19:20:00 to 27-JUL-10 19:20:00 (CST-6)
Location: CONNORSVILLE
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

A large tree was blown down.

Thunderstorm Wind in RUSK, WISCONSIN
From 27-JUL-10 19:20:00 to 27-JUL-10 19:26:00 (CST-6)
Location: LADYSMITH
Magnitude: 52.00 EG
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Several trees were blown down between Ladysmith and Glen Flora, Wisconsin. Some trees fell on power lines.

Thunderstorm Wind in CHIPPEWA, WISCONSIN
From 27-JUL-10 19:45:00 to 27-JUL-10 19:47:00 (CST-6)
Location: HOLCOMBE
Magnitude: 65.00 EG
Property damage: 25.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Numerous trees were blown down around Holcombe, Wisconsin.  Some trees were very large in diameter, while others were snapped off three to four feet from their bases.

Thunderstorm Wind in DUNN, WISCONSIN
From 27-JUL-10 20:00:00 to 27-JUL-10 20:00:00 (CST-6)
Location: IRVINGTON
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

A three inch diameter tree was blown down across Road I, south of Menomonie, Wisconsin.

Thunderstorm Wind in POLK, WISCONSIN
From 27-JUL-10 18:27:00 to 27-JUL-10 18:27:00 (CST-6)
Location: BUNYAN
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Several trees were blown down in the Georgetown area.

Thunderstorm Wind in POLK, WISCONSIN
From 27-JUL-10 18:18:00 to 27-JUL-10 18:18:00 (CST-6)
Location: BALSAM LAKE
Magnitude: 56.00 EG
Property damage: 15.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

Downburst wind damage was evident in central Balsam Lake, south of the EF-0 tornado that moved east to west along West Main Street (Highway 46).  The downburst caused several signs and trees to be blown down.  A garage was also damaged.

Thunderstorm Wind in BARRON, WISCONSIN
From 27-JUL-10 18:40:00 to 27-JUL-10 18:40:00 (CST-6)
Location: CUMBERLAND
Magnitude: 56.00 EG
Property damage: 50.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Numerous trees were downed or snapped off, some two feet in diameter, near the intersection of County Highways P and T.  A house lost half its roof, and trees were down on another house.

Thunderstorm Wind in BARRON, WISCONSIN
From 27-JUL-10 18:57:00 to 27-JUL-10 18:57:00 (CST-6)
Location: RICE LAKE ARROWHD AR
Magnitude: 56.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A large tree were downed across County Road SS.

Tornado in BARRON, WISCONSIN
From 27-JUL-10 18:35:00 to 27-JUL-10 18:37:00 (CST-6)
Location: TURTLE LAKE
Tornado F-scale: EF1
Property damage: 120.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

A tornado traveled east-southeast, just north of the village of Turtle Lake.  It touched down in extreme eastern Polk County and moved into Barron County.  In Barron County, roofs were peeled off on a few homes.  Scattered large trees were snapped or uprooted. The tornado crossed Highway 63, and multiple downed trees resulted in the closure of Highway 63 for several hours.  It dissipated just before reaching Highway 8.

Tornado in BARRON, WISCONSIN
From 27-JUL-10 18:59:00 to 27-JUL-10 19:04:00 (CST-6)
Location: LAKE CHETEK
Tornado F-scale: EF1
Property damage: 75.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

A tornado in southeastern Barron County traveled southeast, touching down just southeast of Cameron and dissipating just north of Chetek.  Numerous very large trees were uprooted and snapped near the start of the path. There were over a dozen large pine trees down on the east shore of Prairie Lake, several of which fell on a home. A storage garage lost its roof and a turkey barn lost its roof.