15 tornadoes touched down in Central Wisconsin Tuesday afternoon, causing staggering amounts of tree and agricultural damage.
The tornadoes touched down as a line of thunderstorms moved through the area. While this type of tornado formation is uncommon, they can form with any thunderstorm if the conditions are right.
Tuesday’s tornadoes spawned one EF2 tornado, 10 EF1 tornadoes, and four EF0 tornadoes. The EF Rating Scale is used to determine the strength of a tornado based on the damage it produces. The National Weather Service does an official storm survey to determine the rating after the tornado has occurred. The chart below shows the EF Rating Scale classifications:
Wisconsin averages around 24 tornadoes every year, with the bulk of those occurring in June and July.
You can read the official report detailing each of the tornadoes and view photos of the damage here: “https://www.weather.gov/mkx/aug2818”