Updated or ended by 6:30 p.m. EDT.
A line of severe thunderstorms with several embedded tornadoes is located from Brussels to southern Lake Simcoe. Individual thunderstorms are moving east at 80 km/h with the line slowing sinking southeast at 30 km/h. Wind gusts over 100 km/h and large hail are likely.
This is a dangerous and potentially life-threatening situation. Take cover immediately, if threatening weather approaches. If you hear a roaring sound or see a funnel cloud, swirling debris near the ground, flying debris, or any threatening weather approaching, take shelter immediately.
Go indoors to a room on the lowest floor, away from outside walls and windows, such as a basement, bathroom, stairwell or interior closet. Leave mobile homes, vehicles, tents, trailers and other temporary or free-standing shelter, and move to a strong building if you can. As a last resort, lie in a low spot and protect your head from flying debris.
In Canada, lightning kills up to 10 people every year.
Remember, when thunder roars, go indoors.
Emergency Management Ontario recommends that you take cover immediately, if threatening weather approaches.
Environment Canada meteorologists will update alerts as required, so stay tuned to your local media or Weatheradio. Email reports of severe weather to firstname.lastname@example.org or tweet with the hashtag #ONStorm.