Tornado updates
NTP has completed preliminary investigations for three recent events: two late-season tornadoes in Quebec and one tornado over Lake Huron. See the event summaries below.
Event Name: Sainte-Seraphine, QC
Date: October 16, 2021
Time: 4:30 PM EDT (2030Z)
Final Classification: Tornado (Over Land)
Preliminary EF-Scale Rating: EF0
EF-Scale Damage Indicator / Degree of Damage: SBO/DOD-5
Start of damage track: 45.9085N, 72.2116W
End of damage of track: 45.9223N, 72.1695W
Location of worst damage: 45.9193N, 72.1849W
Description: Tree and structural damage was reported in Sainte-Seraphine following a storm passing through the area. No injuries were reported. An NTP ground and drone survey was completed on October 18, 2021. Damage assessed as EF0 tornado, with an estimated max. wind speed of 125 km/h, track length of 3.68 km and max. path width of 150 m. Tornado motion was from the WSW (approx. 245 degrees). Further investigation pending, including satellite imagery review.
Event Name: Cowansville, QC
Date: October 16, 2021
Time: 3:25 PM EDT (1925Z)
Final Classification: Tornado (Over Land)
Preliminary EF-Scale Rating: EF0
EF-Scale Damage Indicator / Degree of Damage: FR12/DOD-2
Start of damage track: 45.1761N, 72.8076W
End of damage of track: 45.1883N, 72.7917W
Location of worst damage: 45.1813N, 72.7993W
Description: Tree and structural damage was reported southwest of Cowansville following a storm passing through the area. No injuries were reported. An NTP ground and drone survey was completed on October 19, 2021. Damage assessed as EF0 tornado, with an estimated max. wind speed of 125 km/h, track length of 1.87 km and max. path width of 200 m. Tornado motion was from the SW (approx. 225 degrees). Further investigation pending, including satellite imagery review.
Event Name: L. Huron (Goderich, ON)
Date: October 17, 2021
Time: 10:45 AM EDT (1445Z)
Final Classification: Tornado (Over Water)
Final Rating: Default-EF0
EF-Scale Damage Indicator / Degree of Damage: None
Estimated Event Location: 43.75N, 81.80W
Description: Witness captured a photo of a tornado over Lake Huron west of Goderich. No damage reported and no indication that the tornado came ashore.
Photo D. Sills
