Canada Braces for Tornado Season With Rare Early Activity
Eight tornadoes already reported across Canada in 2026. Ontario storm left 300+ downed trees in London alone. What to expect as summer approaches.
Canada has already recorded eight tornadoes in 2026, with severe weather sweeping southwestern Ontario on Tuesday leaving one confirmed twister and significant damage across London, Woodstock, and surrounding areas. Cleanup is underway after red alert tornado warnings blanketed the region.
Environment Canada and the Northern Tornadoes Project are investigating reports from London and Huntsville, Ontario. The city of London alone reported approximately 300 service requests for tree damage, with the actual downed-tree count expected to be much higher. At its peak, about 6,000 customers lost power, with 1,800 still without electricity by midday Wednesday.
Tornado season typically begins in May and peaks in July and early August. Chief meteorologist Anthony Farnell notes that early-season tornadoes tend to be weaker (EF0s and EF1s), with stronger storms arriving later when heat and humidity intensify. Seven more EF0s were recorded in southern Alberta between Calgary and Edmonton on May 17–18.
For Montreal-area residents heading into summer, the lesson is clear: pay attention to weather alerts. Supercell thunderstorms and tornadoes require specific conditions—warm spells followed by cool fronts—that are becoming more common. Stay weather-aware and have a plan.