A weak tornado touched down in the Goose Lake area in Northwestern Ontario but did not produce any notable damage. It touched down not far from the path of the 2003 tornado at Goose Lake (F1), a more significant twister that touched down and destroyed a long path of forest on July 4 of that year.
Figure 1 shows the surface observations at 1:00 pm CDT, which shows a cold front moving through southwestern Ontario. This front could have been responsible for triggering thunderstorms and ultimately this tornado.
NWS Weather Prediction Center Surface Analysis Archive. (2017). Surface analysis 18Z Mon Jul 11 2011. Retrieved from: https://www.wpc.ncep.noaa.gov/archives/web_pages/sfc/sfc_archive.php