Western University's Northern Tornadoes Project (NTP) has confirmed the presence of an EF0 tornado in St. Clair Township on August 29.
The NTP said the findings were the result of a ground survey conducted in Payne, ON, which is just east of Mooretown.
The tornado caused damage to nearby barns and trees, but no injuries were reported.
An NTP ground/drone survey was completed on September 1, where surveyors also found a narrow swath of crop damage along the track of reported structural and tree damage.
Damage was assessed as an EF0 tornado, with an estimated maximum wind speed of 125 km/h, track length of 4.58 km and maximum path width of 250 m.