The approach of a warm front and shortwave trough triggered a long line of severe thunderstorms in the form of a bow echo that moved across southern WI. Significant wind damage occurred in some areas.

Flash Flood in DODGE, WISCONSIN
From 13-JUL-15 03:25:00 to 13-JUL-15 06:00:00 (CST-6)
Location: DANVILLE
Flood cause: Heavy Rain
Property damage: 10.00K
Crop damage: 1.00K
Reported by: Law Enforcement

Urban and rural road flooding. The pooling of water on highway 151 contributed to a rollover accident near Beaver Dam.  Rainfall totals of 4-6 inches.

Thunderstorm Wind in GREEN LAKE, WISCONSIN
From 13-JUL-15 02:15:00 to 13-JUL-15 03:10:00 (CST-6)
Location: PRINCETON
Magnitude: 65.00 EG
Property damage: 10.00K
Reported by: Trained Spotter

The northern half of the county had numerous trees down. The city of Berlin had approximately 10-12 trees down. Many large limbs down throughout the county with some power outages.

Thunderstorm Wind in DANE, WISCONSIN
From 13-JUL-15 03:05:00 to 13-JUL-15 03:05:00 (CST-6)
Location: CROSS PLAINS
Magnitude: 50.00 EG
Property damage: 3.00K
Reported by: Storm Chaser

Branches and power lines down.

Thunderstorm Wind in DANE, WISCONSIN
From 13-JUL-15 03:15:00 to 13-JUL-15 03:15:00 (CST-6)
Location: MT HOREB
Magnitude: 60.00 EG
Property damage: 8.00K
Reported by: Law Enforcement

Many trees knocked down with one landing on a house and another on a powerline.

Thunderstorm Wind in DANE, WISCONSIN
From 13-JUL-15 03:10:00 to 13-JUL-15 03:10:00 (CST-6)
Location: MAPLE BLUFF
Magnitude: 50.00 EG
Property damage: 1.00K
Reported by: Trained Spotter

Ten to fifteen inch tree branches down.

Thunderstorm Wind in DANE, WISCONSIN
From 13-JUL-15 03:05:00 to 13-JUL-15 03:05:00 (CST-6)
Location: SUN PRAIRIE
Magnitude: 56.00 MG
Reported by: Public

Straight line winds measured by a home weather station.

Thunderstorm Wind in SHEBOYGAN, WISCONSIN
From 13-JUL-15 04:00:00 to 13-JUL-15 04:30:00 (CST-6)
Location: BEECHWOOD
Magnitude: 60.00 EG
Property damage: 10.00K
Reported by: Law Enforcement

Widespread tree damage with some power outages.

Thunderstorm Wind in DODGE, WISCONSIN
From 13-JUL-15 03:29:00 to 13-JUL-15 03:29:00 (CST-6)
Location: HUSTISFORD
Magnitude: 60.00 EG
Property damage: 4.00K
Reported by: Public

A large tree fell on a home.

Thunderstorm Wind in DODGE, WISCONSIN
From 13-JUL-15 03:10:00 to 13-JUL-15 03:20:00 (CST-6)
Location: SOUTH BEAVER DAM
Magnitude: 56.00 MG
Reported by: Public

Measured with a home weather station.

Thunderstorm Wind in DODGE, WISCONSIN
From 13-JUL-15 03:16:00 to 13-JUL-15 03:21:00 (CST-6)
Location: BEAVER DAM
Magnitude: 52.00 EG
Reported by: Trained Spotter

Straight line winds with line of thunderstorms.

Thunderstorm Wind in DODGE, WISCONSIN
From 13-JUL-15 03:25:00 to 13-JUL-15 03:30:00 (CST-6)
Location: JUNEAU
Magnitude: 60.00 EG
Property damage: 1.00K
Reported by: Trained Spotter

High winds and one inch hail. A 50 foot tall tree down.

Thunderstorm Wind in ROCK, WISCONSIN
From 13-JUL-15 03:59:00 to 13-JUL-15 04:30:00 (CST-6)
Location: LEYDEN
Magnitude: 60.00 EG
Property damage: 10.00K
Reported by: Law Enforcement

Many trees down across much of the western portion of the county. Most concentrated tree damage was 4 miles west southwest of Milton where multiple trees were snapped or uprooted.

Thunderstorm Wind in KENOSHA, WISCONSIN
From 13-JUL-15 04:30:00 to 13-JUL-15 05:05:00 (CST-6)
Location: BRIGHTON
Magnitude: 54.00 MG
Property damage: 20.00K
Reported by: Law Enforcement

Numerous reports of tree branches and power lines down throughout the county. Kenosha airport ASOS measured a 62 mph wind gust.

Thunderstorm Wind in DANE, WISCONSIN
From 13-JUL-15 03:25:00 to 13-JUL-15 03:35:00 (CST-6)
Location: BELLEVILLE
Magnitude: 64.00 MG
Reported by: Trained Spotter

Straight line winds measured on a home weather station.

Thunderstorm Wind in DANE, WISCONSIN
From 13-JUL-15 03:16:00 to 13-JUL-15 03:16:00 (CST-6)
Location: SUN PRAIRIE
Magnitude: 52.00 EG
Reported by: Trained Spotter

Straight line winds estimated.

Thunderstorm Wind in GREEN, WISCONSIN
From 13-JUL-15 03:29:00 to 13-JUL-15 03:29:00 (CST-6)
Location: BELLEVILLE
Magnitude: 64.00 MG
Property damage: 10.00K
Reported by: Law Enforcement

Half of a roof was blown off a residential home. Tree limbs down on roads.

Thunderstorm Wind in JEFFERSON, WISCONSIN
From 13-JUL-15 03:10:00 to 13-JUL-15 04:00:00 (CST-6)
Location: WATERLOO
Magnitude: 60.00 EG
Property damage: 10.00K
Reported by: Law Enforcement

Trees down throughout the county, including a couple large trees down just southwest of Palmyra. Wires down in Aztalan and Lake Mills.

Thunderstorm Wind in FOND DU LAC, WISCONSIN
From 13-JUL-15 03:02:00 to 13-JUL-15 03:30:00 (CST-6)
Location: FAIRWATER
Magnitude: 60.00 EG
Property damage: 5.00K
Reported by: Trained Spotter

Numerous reports of trees and powerlines down across the southern portion of the county.

Thunderstorm Wind in IOWA, WISCONSIN
From 13-JUL-15 02:51:00 to 13-JUL-15 02:51:00 (CST-6)
Location: ARENA
Magnitude: 60.00 EG
Property damage: 5.00K
Reported by: Law Enforcement

Some trees and power lines down.

Thunderstorm Wind in SAUK, WISCONSIN
From 13-JUL-15 02:30:00 to 13-JUL-15 02:30:00 (CST-6)
Location: LONE ROCK AIRPORT
Magnitude: 59.00 EG
Reported by: ASOS

Straight line winds from a line of thunderstorms.

Thunderstorm Wind in SAUK, WISCONSIN
From 13-JUL-15 02:13:00 to 13-JUL-15 02:50:00 (CST-6)
Location: LORETTA
Magnitude: 60.00 EG
Property damage: 5.00K
Reported by: Law Enforcement

Trees down across much of the southern portion of the county.

Thunderstorm Wind in MARQUETTE, WISCONSIN
From 13-JUL-15 02:10:00 to 13-JUL-15 02:40:00 (CST-6)
Location: OXFORD
Magnitude: 60.00 EG
Property damage: 5.00K
Reported by: Law Enforcement

Sporadic trees down throughout the county, including a couple power lines down. Electrical power was out for much of the northern portion of the county.

Hail in DODGE, WISCONSIN
From 13-JUL-15 03:25:00 to 13-JUL-15 03:25:00 (CST-6)
Location: JUNEAU
Magnitude: 1.00 
Reported by: Trained Spotter

Thunderstorm Wind in COLUMBIA, WISCONSIN
From 13-JUL-15 03:01:00 to 13-JUL-15 03:10:00 (CST-6)
Location: COLUMBUS
Magnitude: 87.00 EG
Property damage: 1.00M
Reported by: NWS Storm Survey

Widespread tree damage in the city of Columbus with many of the roads blocked by debris. A State of Emergency was declared in the city. Numerous large tree branches and trunks snapped. Some large trees uprooted. A few trees downed on homes. Some power poles knocked down or leaning. The Red Cross opened a shelter at Columbus Middle School for those without power in order to seek relief from the heat and humidity.

Thunderstorm Wind in DODGE, WISCONSIN
From 13-JUL-15 03:02:00 to 13-JUL-15 03:23:00 (CST-6)
Location: DANVILLE
Magnitude: 87.00 EG
Property damage: 120.00K
Reported by: NWS Storm Survey

Straight line wind damage collapsed the roofs of three old barns and partially collapsed the roof of a pole barn.  Many large tree branches snapped and some whole trees downed. Many power lines down.  Some fields of corn were laid over on an angle.

Thunderstorm Wind in WALWORTH, WISCONSIN
From 13-JUL-15 03:55:00 to 13-JUL-15 04:52:00 (CST-6)
Location: WHTWTR CLOVER VLY AR
Magnitude: 55.00 EG
Property damage: 20.00K
Reported by: Law Enforcement

Widespread branches and trees down across the county. A few power lines down.

Thunderstorm Wind in WASHINGTON, WISCONSIN
From 13-JUL-15 03:40:00 to 13-JUL-15 04:15:00 (CST-6)
Location: HARTFORD
Magnitude: 55.00 EG
Property damage: 15.00K
Reported by: Law Enforcement

Sporadic tree damage across the county. A few power lines down.

Flash Flood in COLUMBIA, WISCONSIN
From 13-JUL-15 03:10:00 to 13-JUL-15 06:00:00 (CST-6)
Location: PARDEEVILLE
Flood cause: Heavy Rain
Property damage: 5.00K
Crop damage: 1.00K
Reported by: Other Federal Agency

Street flooding in many communities. Reports of driveways flooded up to the garages in Fall River. Some shoulder washouts on rural roads. Rainfall totals of 4-6 inches.

Thunderstorm Wind in WAUKESHA, WISCONSIN
From 13-JUL-15 03:55:00 to 13-JUL-15 04:40:00 (CST-6)
Location: EAGLE
Magnitude: 65.00 EG
Property damage: 25.00K
Reported by: Law Enforcement

Numerous branches and trees down across the county, most concentrated from Genesee to Mukwonago. In addition, a few 2 foot diameter trees downed and shingles blown off a home on North Island on Eagle Spring Lake. Power lines downed in Eagle, Ottawa, and Sussex. A tree fell on a van.