The National Weather Service advised that people take breaks from the heat and be 'weather aware' as possible hail and tornadoes could hit the area.
The warning said the storms were capable of producing 90 km/h wind gusts and nickel-sized hail.
A tornado warning has been issued in Gatineau, Que. as a severe thunderstorm moves across the region.
5:21 p.m. EDT: Environment Canada meteorologists are tracking a severe thunderstorm that is possibly producing a tornado. Damaging winds, large hail and locally ...