It said wind gusts of up to 90 km/h are possible with up to toonie-sized hail.
The northern GTA, through Barrie and Cottage Country, extending east to areas west of Ottawa, are also under a severe thunderstorm watch.
For those areas, the watch reads slightly different, with 100 km/h wind gusts possible, along with toonie-sized hail and even a risk of a tornado.
