Severe storms that swept across parts of southwestern Ontario on Saturday produced at least two confirmed tornadoes — one near Lindsay and another in Woodstock — according to the Northern Tornadoes Project.
Preliminary ratings and damage
Both tornadoes were given a preliminary rating of EF0 on the enhanced Fujita scale, which corresponds to estimated wind speeds between 65 and 85 kilometres per hour. That rating reflects the level of damage investigators have so far been able to verify.
“Given the damage reported so far is minor, we are not planning to send a survey team,”
the Northern Tornadoes Project said in a Facebook post about the Woodstock event. The group also said it is not currently planning to dispatch a team to Lindsay, where only evidence of minor damage has been reported; it will gather additional information before determining whether a site visit is necessary.
Local impacts and response
Municipal crews in Woodstock continued cleanup work on Sunday, focusing on uprooted and downed trees lining sidewalks, boulevards and municipal parks. The city reported damage to a cricket field fence and temporarily closed the facility while it secures and repairs the area.
Residents in affected areas were urged to take precautions around downed lines and debris. Environment Canada had earlier issued a tornado warning for parts of the region, warning that the storms could produce damaging winds, large hail and locally intense rainfall.
What an EF0 means for residents
An EF0 designation is the lowest rating on the enhanced Fujita scale, indicating winds strong enough to cause minor structural and vegetation damage but typically not catastrophic destruction. Common effects at this intensity include broken tree branches, minor roof and siding damage, and unsecured outdoor items being tossed around.
| Location | Preliminary EF rating | Estimated wind speeds |
|---|---|---|
| Lindsay | EF0 | 65–85 km/h |
| Woodstock | EF0 | 65–85 km/h |
Safety reminders and next steps
Local authorities and storm-response organisations typically advise residents in affected zones to:
- Stay away from downed power lines and report them immediately to the utility.
- Avoid unnecessary travel while crews clear debris and assess hazards.
- Document and photograph damage for insurance purposes once it is safe to do so.
The Northern Tornadoes Project will continue to collect and review reports of damage. If evidence mounts of more significant impacts than currently reported, investigators may deploy field teams to perform on-site surveys and refine their ratings.
Context: tornado activity in Ontario
Tornadoes are relatively uncommon across most of Ontario but are most likely during the summer months when warm, moist air collides with cooler, unstable conditions — the recipe for severe thunderstorms. Even lower-rated tornadoes can produce dangerous flying debris and localized damage, making prompt warnings and local preparedness important.
For residents in storm-affected areas, municipal websites and Environment Canada are the best sources for updates on warnings, power outages and recovery resources. Local public works and parks departments typically post information on closures and safety precautions as crews make assessments and repairs.
As municipal teams work to clear roads and assess parks and public spaces, residents should continue to heed official advisories and report hazards to their local authorities.
