First tornado and microburst of 2026 confirmed in Canada

by Rachel Morgan News Editor

The Northern Tornadoes Project (NTP) has confirmed the occurrence of Canada’s first tornado and microburst of 2026. The weather events took place on May 9, affecting areas in Ontario.

Following detailed damage surveys conducted earlier this week, officials identified both an EF0 tornado and an EF0 microburst. The EF0 designation represents the lowest rating on the Enhanced Fujita Scale.

Impacts in Lucan and Granton

A microburst occurred south of Lucan, with estimated maximum wind speeds reaching 130 km/h. The event caused damage to a farm building, specifically removing the roof of a barn.

From Instagram — related to Enhanced Fujita Scale, Lucan and Granton

The same storm system produced an EF0 tornado south of Granton. This tornado reached estimated maximum wind speeds of 110 km/h and followed a west-to-east motion.

Damage in the Granton area included a toppled truck pulling a trailer and a solar panel on a pedestal. Investigators also documented broken large tree branches and limited weak tree damage in a small area.

Did You Know? The EF0 rating assigned to both the tornado and microburst is the lowest rating on the Enhanced Fujita Scale.

Investigation and Analysis

The Northern Tornadoes Project utilized both ground and drone surveys on May 10, 2026, to confirm the events. Drone imagery captured the fallen walls and removed roof of the impacted barn in Lucan.

While the tornado’s path is believed to be at least 1 km long, exact track details remain uncertain due to limited damage indicators. The start time for the event was determined via radar estimates.

Expert Insight: The use of drone and ground surveys allows for a high level of precision in mapping storm paths, even when damage indicators are limited. These early-season confirmations are critical for establishing the baseline of the year’s severe weather activity.

Potential Next Steps

A satellite review is currently underway, which may provide more definitive data regarding the storm’s timeline. Further analysis of radar data could potentially refine the estimated start time of the events.

Potential Next Steps
tornado damage Ontario

As the season progresses, the Northern Tornadoes Project is likely to continue conducting damage surveys to track similar severe weather patterns across the region.

Frequently Asked Questions

Were there any casualties during these events?
No injuries were reported in either the Lucan or Granton areas.

What was the maximum wind speed of the confirmed tornado?
The EF0 tornado south of Granton had estimated maximum wind speeds of 110 km/h.

What caused the damage to the barn in Lucan?
The damage, which included the removal of the barn’s roof, was caused by an EF0 microburst with wind speeds estimated at 130 km/h.

How does your community prepare for the arrival of the first severe weather events of the season?

Canada's first tornado of 2026 confirmed in Ontario | #forecast

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