The National Weather Service said the damage in Camp Lake during Monday's afternoon storms is consistent with an EF-0 tornado.
The NWS said damage was found near the Illinois-Wisconsin state line. The damage was consistent with a "low end" EF-1 tornado.
The tornado continued northeast into the Camp Lake area, where damage was consistent with a EF-0.
Earlier Tuesday, the NWS said an EF-0 tornado was detected in Lake Geneva.