Tornado That Hit Woodridge, Naperville Had 140 MPH Winds | Across America, US Patch
Tornado That Hit Woodridge, Naperville Had 140 MPH Winds | Across America, US Patch If it was a hurricane, it would be equivalent to a Category 4 on the Saffir-Simpson scale. See here: https://www.nhc.noaa.gov/aboutsshws.php