Storm Record · Walworth, Waukesha Counties
August 18, 2015: Tornadoes in Walworth and Waukesha Counties
3
Tornadoes
3
NWS reports
What the National Weather Service recorded
A strong low pressure system moved across the Upper Mississippi River Valley and Great Lakes region. A large area of showers and thunderstorms moved across southern WI and produced 3 tornadoes in southeast WI.
Source: NOAA Storm Events Database · episode 97903
Every report, in the Weather Service's words
Where It Hit
| Location | County | Hazard | Size | Report |
|---|---|---|---|---|
| Phantom Lake (3.42 E) | Waukesha | Tornado | EF1 | An EF1 tornado caused sporadic damage along its path. A metal building system had approximately 40 percent of its roof tore away. There was minor damage to the roofs of two residential homes. Five wooden power poles were knocked down. Many tree branches were snapped with some whole trees snapped. |
| Bethesda (1.22 E) | Waukesha | Tornado | EF0 | An EF0 tornado caused sporadic damage along its path. Mostly trees were affected with many large branches snapped. Some whole trees were downed. A large tree branch landed on a car. There was some damage to a large wooden toy set and one wall was removed from a very small shed. |
| Lake Geneva (.83 S) | Walworth | Tornado | EF1 | An EF1 tornado caused a sporadic path of damage. The most severe damage was significant roof damage to 4 buildings that were warehouse buildings and metal building systems. One of those buildings sustained a collapsed wall. There was minor damage to a mobile home and a barn. A couple large retail signs were destroyed. There were many trees uprooted and snapped. |