In Annin Township, the storms knocked down trees and power lines, closing Annin Creek Road.
In Chautauqua County, Pomfret, Brocton and Portland all saw flooding.
The American Red Cross set up a shelter at Brocton Central School to house residents of 45 evacuated homes.
The shelter was closed late this afternoon after the people were told they could return to their homes.
The National Weather Service has confirmed that an EF1 tornado touched down in Centre County on Thursday.
The tornado was at least 1½ miles long and 75 yards wide with winds reaching 100 mph.