Emergency Management OntarioEnvironment Canada

Radar-confirmed tornado moving east at 100 km/h prompts warning for Guelph, Erin, southern Wellington County; destructive winds, hail, flooding possible

A radar-confirmed tornado is moving east at 100 km/h, prompting warnings for Guelph, Erin, and southern Wellington County. Residents are advised to take cover due to potential destructive winds, damaging hail, and flooding, as the storm could impact areas including Waterloo and St. Jacobs.

Guelph News Guelph News2 September 2026 · 22:22 UTC
CuriousCats Full Story

A radar-confirmed tornado is currently moving east at 100 km/h, prompting urgent warnings for Guelph, Erin, and southern Wellington County. The storm, which originated over St. Clements, poses a very dangerous and potentially life-threatening situation for residents in the affected areas.1234510

Emergency Management Ontario has advised residents to take cover immediately in a basement, interior room, or sturdy shelter as the thunderstorm is capable of producing destructive winds, damaging hail, and flooding rainfall. Areas that could be impacted include St. Jacobs, Waterloo, Woodside National Historic Site of Canada, Guelph, Aberfoyle, Eden Mills, Morriston, and Rockwood.6911

In case of threatening weather, if no shelter is available, individuals should lie in a low spot and protect their heads from flying debris. Those on the water are advised to return to shore or move away from the tornado's path, wearing life jackets and lying face down to protect themselves.78

Tornado warnings are issued when a thunderstorm is producing or is likely to produce a tornado, and residents are urged to remain vigilant and prepared for rapidly changing conditions.

Key Insight
“The storm was located over St. Clements at 5:32 p.m. EDT, with potential impacts including St. Jacobs, Waterloo, and Guelph. Emergency Management Ontario urges immediate shelter in a basement or interior room, and those on water to return to shore or lie face down with a lifejacket.”
CuriousCats studied:
1
Guelph NewsGuelph News
“At 5:32 p.m. EDT, a thunderstorm capable of producing a tornado, is located over St. Clements.”
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EARLIER IN THE STORY:
Environment Canada issues heat warnings for southern Ontario as severe storms threaten tornadoes, destructive winds, and tennis ball-sized hail Wednesday
Global NewsGlobal News
Environment Canada issues heat warnings for southern Ontario as severe storms threaten tornadoes, destructive winds, and tennis ball-sized hail Wednesday

Showers and thunderstorms are moving into the Toronto area as much of southern Ontario deals with extreme heat, with Environment Canada issuing a yellow heat warning for several regions including Niagara Falls, with maximum temperatures of 30 to 32 C on Wednesday and humidity making it feel near 40 degrees.

Severe Weather OntarioThunderstorms TorontoToronto And Region Conservation Authority
2026-09-02
TL;DR by CuriousCats.ai
  • Environment Canada has issued a yellow heat warning for several regions, including Niagara Falls, indicating maximum temperatures of 30 to 32 C on Wednesday.
  • Humidity will make it feel near 40 degrees.
  • A significant severe weather risk is expected across southern Ontario on Wednesday afternoon and evening, with potential for tornadoes, destructive winds, and hail up to tennis ball size.
  • The main complex of storms is expected to develop between 2-6 PM, with the highest severe weather threat around the Lake Huron shoreline extending through London and Kitchener to the Greater Toronto Area.
  • Showers with thunderstorms are expected to begin in the evening and end after midnight, with a second wave bringing an additional 15 to 25 millimetres of rain.
  • On Monday, the Toronto and Region Conservation Authority (TRCA) reported that its watersheds received 8-55 mm of rain, saturating the ground.
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