The National Weather Service Milwaukee storm survey crew concluded concluded that two tornadoes occurred. An EF-1 tornado with winds estimated up to 110 mph was confirmed in Lake Geneva. Another EF-1 tornado with winds estimated up to 100 mph was confirmed 2 miles southwest of Big Bend near County Road L and Maple Avenue.
The National Weather Service reports the following preliminary statistics:
The Lake Geneva tornado was about 5 miles long and up to a quarter mile wide. It occured around 9 pm and lasted about 5 minutes. The tornado started in downtown Lake Geneva and ended in the Lyons area.
The Big Bend tornado occurred around 9:30 pm and was about 1 mile long. The tornado started about 3 miles SW of the city and ended 2 miles SW of the city.
No injuries were reported from either storm.
A line of thunderstorms moved across southern Wisconsin Tuesday afternoon and evening, August 18, 2015. A tornado watch was in effect, as the environment was conducive to tornado development. The National Weather Service was monitoring rotation with a thunderstorm near the Lake Geneva area and issued a severe thunderstorm warning for eastern Walworth county. the storm produced the first tornado. The rotation then dissipated.
Another storm cell then showed some rotation which prompted the National Weather Service to issue a tornado warning for southeast Waukesha county. The thunderstorm cell produced the second tornado. Radar showed the rotation moving north of Big Bend but little to no damage was found north of Big Bend.
SOURCE:
National Weather Service Milwaukee/Sullivan
weather.gov/mkx/PossibleTornadoinLakeGenevaTuesdayEvening
LAKE GENEVA TORNADO …
Tornado damage in the Lyons/Lake Geneva area. Winds estimated at 110mph #swiwx pic.twitter.com/0EG2ZAvNs2
— NWS Milwaukee (@NWSMKX) August 19, 2015
EF1 tornado confirmed in Lake Geneva. More tree damage photos #swiwx pic.twitter.com/zWlIoTiart
— NWS Milwaukee (@NWSMKX) August 19, 2015
More tree damage in Lake Geneva #swiwx pic.twitter.com/jwXntys9XL
— NWS Milwaukee (@NWSMKX) August 19, 2015
Tree damage in Lake Geneva from NWS survey team #swiwx pic.twitter.com/FR79MXMBUM
— NWS Milwaukee (@NWSMKX) August 19, 2015
BIG BEND TORNADO …
Big Bend EF-1 Tornado Damage #swiwx pic.twitter.com/c9M9NSfXpc
— NWS Milwaukee (@NWSMKX) August 20, 2015
EF1 Tornado Confirmed 2 miles SW of Big Bend in Waukesha County #swiwx pic.twitter.com/oDKuGfJDTA
— NWS Milwaukee (@NWSMKX) August 19, 2015
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