Environment Canada has issued a severe thunderstorm watch for Toronto, meaning heavy rain, hail, and heavy wind are all in the forecast for Saturday night.
Other parts of southern Ontario, including Mississauga and Brampton, are under a thunderstorm warning – a more intense storm could be hitting those areas.
At least 3 cm of hail, wind gusts to 100 km/h, torrential downpours and intense lightning are possible.