Southern Ontario: Thunderstorm Outlook for Sunday, June 13, 2021

Forecast Discussion

A weakening cluster of storms that brought severe weather to parts of Michigan on Saturday evening is expected to track into Southwestern Ontario during the early morning hours on Sunday. The main risk is between 12-4 am with a focus on the Windsor area and around the southern shoreline of Lake Huron. These storms will be quite weak by the time to reach our region with maybe some small hail, strong wind gusts and of course heavy rainfall with some lightning.

In addition to this, there is the risk of some pop-up storms over parts of Northeastern, Central and Eastern Ontario during the afternoon and evening. They should also be mainly non-severe although one or two cells could be quite strong and come close to severe levels. Still, the environment isn't really favourable for widespread severe activity. We’ll continue to monitor this and may need to introduce an isolated severe risk zone if it looks more probable.