Two EF0 tornadoes at Tweed
An NTP investigation has concluded that two EF0 tornadoes occurred at Tweed on the afternoon of June 26th. Following up on reports of downed trees in the area, an NTP survey team was able to document two narrow paths of damage. The tornadoes appear to have occurred when a line of storms overtook developing storms ahead of it - a common way for QLCS-type tornadoes to develop. Detailed summaries are provided below, with a map and photos.
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Map showing the tracks of the two EF0 tornadoes in the Tweed area.
Event Name: Stoco Lake (Tweed), ON
Date: June 26, 2023
Start Time: 4:35 PM EDT (2035 UTC)
Final Classification: Tornado (over land)
Final EF-Scale Rating: EF0
EF-Scale Damage Indicator / Degree of Damage: C-T/DOD-3
Start of damage track: 44.4531N, 77.3223W
End of damage track: 44.4980N, 77.2814W
Location of Worst Damage: 44.4659N, 77.3015W
Description: Tree damage was reported in the Tweed area around Stoco Lake after a storm passed through. No injuries were reported. An NTP ground and drone survey was completed on June 28, 2023, discovering two separate tornado tracks. The first tornado was assessed as EF0, with an estimated max. wind speed of 115 km/h, track length of 6.13 km and max. path width of 450 m. Tornado motion was from the SW (approx. 215 degrees). Satellite imagery review is pending. Start time is estimated based radar imagery and security camera footage. The second tornado (Cosy Cove (Tweed), EF0) started southeast of the end point of this first tornado on the northern end of Stoco Lake.
Event Name: Cosy Cove (Tweed), ON
Date: June 26, 2023
Start Time: 4:45 PM EDT (2045 UTC)
Final Classification: Tornado (over land)
Final EF-Scale Rating: EF0
EF-Scale Damage Indicator / Degree of Damage: C-T/DOD-3
Start of damage track: 44.4911N, 77.2735W
End of damage track: 44.5195N, 77.2634W
Location of Worst Damage: 44.5059N, 77.2658W
Description: Tree damage was reported in the Tweed area around Stoco Lake after a storm passed through. No injuries were reported. An NTP ground and drone survey was completed on June 28, 2023, discovering two separate tornado tracks. The second tornado was assessed as EF0, with an estimated max. wind speed of 115 km/h, track length of 3.28 km and max. path width of 240 m. Tornado motion was from the SSW (approx. 195 degrees). Satellite imagery review is pending. Start time is estimated based radar imagery. The first tornado (Tweed, EF0) started southwest of Stoco Lake and ended northwest of this second tornado.
One of the locations with the worst damage along the track of the Stoco Lake tornado. The enhanced damage at this location is likely due to exposure to tornado winds off Stoco Lake.
