Ontario Tornado Update #2 - Jul 18

NTP investigation has led to the confirmation of an EF2 tornado near Timmins, ON with a quasi-linear convective system on July 18, 2022. Aircraft aerial imagery was required to ensure the damage discovered on satellite imagery was the result of a tornado. Details are provided in the summary below.


Event Name: Gowanmarsh Lake, ON
Date: July 18, 2022
Start Time: 9:48 PM EDT (0148 UTC)
Final Classification: Tornado (Over Land)
Final EF-Scale Rating: EF2
EF-Scale Damage Indicator / Degree of Damage: C-T/DOD-6
Start of damage track: 48.6702N, 81.2124W
End of damage of track: 48.6602N, 81.1850W
Location of worst damage: 48.6663N, 81.2064W
Description: Satellite imagery review of a storm track of interest revealed a swath of damage near Gowanmarsh Lake, northeast of Timmins. The cause of the damage was unclear and event could not be classified based on satellite imagery alone. Aerial imagery was collected during an aircraft survey on November 10, 2022, and review of that imagery confirmed tornado damage in the area. Tornado damage assessed as EF2, with an estimated max. wind speed of 190 km/h, track length of 2.42 km and max. path width of 170 m. Tornado motion was from the WNW (approx. 295 degrees). Start time is radar estimated.