A Tornado Threat Is In Place For Southern Ontario Today With Large Hail & Heavy Rainfall

It's going to get chaotic today.

Creator

Southern Ontario is in for an eventful weather day, which means you may want to pack a raincoat before heading out of the house.

Across Southern Ontario, there is a threat of severe thunderstorms rolling in this afternoon and later tonight, with the possibility of damaging winds, large hail, heavy rainfall, supercells and possible tornadoes, according to The Weather Network. In fact, TWN is warning of a "tornado threat" throughout the day.

The warm front moving into Southern Ontario already brought "some rain showers into the pre-dawn hours Tuesday. An initial round of showers and thunderstorms will also sweep through the Nickel Belt region Tuesday morning, north of a low-pressure system," according to The Weather Network.

Throughout the day, the warm front will build "instability" by Lake Huron and Georgian Bay, "as a low-pressure system cuts across the Great Lakes," bringing "a widespread threat for severe thunderstorms across southern Ontario in the afternoon and evening."

The Weather Network warns of one to two possible tornados by the shores of Lake Huron and Georgian Bay early this afternoon and evening.

According to The Weather Network, Goderich, London, and Barrie are under a "severe likely" thunderstorm warning, and Toronto, Windsor, Bancroft, Kingston, Ottawa, and Sudbury are under "severe possible."

This article's cover image was used for illustrative purposes only.

  • Brooke Houghton (she/her) was a Toronto-based writer for Narcity Media. Brooke has written for publications such as blogTO, Post City, Vitalize Magazine and more.

Parts of Ontario are forecast to get more than 30 cm of snow this week

A major snowstorm in the north and lake-effect snow in the south! ❄️

Tax brackets in Canada: Here's what you'll pay in each province on your 2025 tax return

A few tax changes for 2025 mean you could be paying a lot less this spring. 👀

Costco has a new store opening in 2026 and the unique warehouse is a first in this province

It'll have thousands of products that aren't available at regular stores. 👀

24 products at Costco you can get for cheaper than items at Loblaws

You might not expect some of these items to be a better deal because of the price tags. 👀