Saturday's forecast is trending slightly drier from Chicago westward, with afternoon storm redevelopment mainly. Windy City Smokeout evacuations due to severe weather. Severe thun

Heat warnings are in place for much of southern Ontario as the hot and humid weather settles in this weekend. This instability will fuel a risk for strong to severe storms—including the risk for one or two tornadoes.

Chad Hahn, warning coordination meteorologist at the National Weather Service, also confirmed a tornado did not touch down in Newton or Jasper County. He said there was a strong rotating wall cloud on the storm, which along with the rotation identified on radar prompted the tornado warning.

After an afternoon filled with tornado sirens, lightning strikes, torrential rain and visible cloud rotation near Iowa Speedway, IndyCar canceled Friday afternoon practice.