Strong Wind, Heavy Rain, Hail, & a Tornado in Quebec and Ontario

Severe thunderstorms rolled across Ontario and Quebec on Thursday.

There were reports of strong wind gusts, significant rain, hail, and even a tornado.

Several areas reported uprooted trees and about 25,000 homes were left without power in Ontario. In Quebec, several regions had reports of uprooted trees, broken tree branches and hydro poles down. About 100,000 homes were left without power.

Below is a summary of reports received by Environment and Climate Change Canada:

Significant rain in millimetres:

• Clearwater Bay 54.9 mm

• Bancroft 47.5 mm

• Sioux Narrows 38.9 mm

• Separation Lake 45 mm

• Moose Creek Wells 43.6 mm

• Vermillion Bay 35.4 mm

Hail in millimetres:

Nickel to quarter size hail (22 to 25) in Casselman

Pea sized hail (6) in Ottawa, Bobcaygeon and Milton

Significant wind:

Ottawa 89 km/h

Assessment of the damage indicates a category EF-1 tornado, with winds between 135 and 175 kilometres per hour, in the Saint-Roch-de-l'Achigan area. Several recreational vehicles on a camping and buildings of surrounding farms experienced damages. The event occurred around 6:30 PM on July 11th.

Based on ECCC Data