National Weather Service Confirms 8 Tornadoes in August 11 Derecho

The National Weather Service Chicago says it has confirmed eight tornadoes in the August 11, 2026, derecho, two in Grundy County, Illinois, adding to the recently updated total. The same storm produced two other tornadoes that touched down in Illinois then traveled to Munster and Crown Point in northwest Indiana, another went from Glenwood to Lansing in Illinois. Meteorologists say the derecho also produced “swaths of widespread” straight-line winds, some measuring over 100 miles per hour. Here is a link to the National Weather Service Chicago website updates – https://www.weather.gov/lot/2026_08_11_Derecho  .