An EF-0 tornado with peak wind speeds of 75 miles per hour touched down in the Chicago suburb of Oak Brook on Saturday as severe thunderstorms moved through the area, according to the National Weather Service.
In a tweet, the NWS said it confirmed a brief tornado had occurred based on information provided by local government officials, weather observers and radar data.
The tornado was rated EF-0, the lowest level on the six-level Enhanced Fujita Scale. Traveling about 3 km with a maximum width of 60 meters, it broke tree branches, uprooted trees and tore off the roof of a golf course bathroom.
The tornado first touched down near the Hilton Hotel and Willow Crest Golf Club before ending in Oak Brook Central Park about three minutes later, according to the NWS.
Severe weather also hit the Rockford area where a second brief tornado developed, traveling approximately half a mile in one minute. Also rated EF-0, it brought winds of 80 miles per hour and uprooted several trees.
The NWS warns that information provided late Saturday is only preliminary and subject to change pending final review of events and release of storm data.