No damage was caused by this brief and weak EF0 tornado which touched down at Beaver lake, 46 kilometres to the southwest of Sudbury. Witnesses photographed the funnel cloud which at one point condensed all the way to the ground. The tornado occurred at about 6:50 pm EDT as a powerful supercell thunderstorm passed through the area.
Figure 1 depicts the surface observations at 11:00 pm EDT, which shows a cold front moving through northern Ontario. This front was the focus for thunderstorms throughout the evening hours, which ultimately led to two intense supercells near Beaver Lake, one of which produced this tornado.
NWS Weather Prediction Center Surface Analysis Archive. (2017). Surface analysis 03Z Mon Jun 17 2013. Retrieved from: https://www.wpc.ncep.noaa.gov/archives/web_pages/sfc/sfc_archive.php