Storm Record · Columbia, Dane, Dodge, Jefferson, Sauk, Walworth, Waukesha Counties
July 13, 2015: Straight-line wind across seven counties
1″
Largest hail
100
Strongest gust
18
NWS reports
What the National Weather Service recorded
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.
Source: NOAA Storm Events Database · episode 98950
Every report, in the Weather Service's words
Where It Hit
| Location | County | Hazard | Size | Report |
|---|---|---|---|---|
| Columbus (.65 WNW) | Columbia | Wind | 100 mph wind | 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. |
| Danville (2.83 W) | Dodge | Wind | 100 mph wind | 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. |
| Eagle (3.85 N) | Waukesha | Wind | 75 mph wind | 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. |
| Belleville (.86 NW) | Dane | Wind | 74 mph wind | Straight line winds measured on a home weather station. |
| Mt Horeb (.86 NW) | Dane | Wind | 69 mph wind | Many trees knocked down with one landing on a house and another on a powerline. |
| Hustisford | Dodge | Wind | 69 mph wind | A large tree fell on a home. |
| Juneau | Dodge | Wind | 69 mph wind | High winds and one inch hail. A 50 foot tall tree down. |
| Waterloo (.59 WNW) | Jefferson | Wind | 69 mph wind | Trees down throughout the county, including a couple large trees down just southwest of Palmyra. Wires down in Aztalan and Lake Mills. |
| Loretta (2.35 SSE) | Sauk | Wind | 69 mph wind | Trees down across much of the southern portion of the county. |
| Lone Rock Airport | Sauk | Wind | 68 mph wind | Straight line winds from a line of thunderstorms. |
| Sun Prairie (1.51 W) | Dane | Wind | 64 mph wind | Straight line winds measured by a home weather station. |
| South Beaver Dam (3.73 NW) | Dodge | Wind | 64 mph wind | Measured with a home weather station. |
| Whtwtr Clover Vly Ar (1.78 SE) | Walworth | Wind | 63 mph wind | Widespread branches and trees down across the county. A few power lines down. |
| Beaver Dam (.85 SW) | Dodge | Wind | 60 mph wind | Straight line winds with line of thunderstorms. |
| Sun Prairie (2.57 NW) | Dane | Wind | 60 mph wind | Straight line winds estimated. |
| Cross Plains (1.22 SW) | Dane | Wind | 58 mph wind | Branches and power lines down. |
| Maple Bluff (1.47 SSW) | Dane | Wind | 58 mph wind | Ten to fifteen inch tree branches down. |
| Juneau (.69 N) | Dodge | Hail | 1" hail |
Service areas this storm touched