Environment Canada issues tornado warning for southern Ontario

Thursday, July 3, 2014, 12:02 PM -

UPDATE: 10:22 am ET- Environment Canada meteorologists are tracking a severe thunderstorm that is possible producing a tornado.

That's the latest in a tornado WARNING issued by EC. 

The warning is in place for St. Thomas - Aylmer - Eastern Elgin County, while a tornado WATCH was issued for Simcoe - Delhi - Norfolk.

"The severe thunderstorm is located southwest of Port Burwell and is moving northeast at close to 40 km/h towards the Lake Erie shore between Port Bruce and Port Burwell," EC says. "This is a dangerous and potentially life-threatening situation."

EXTENDED ACTIVE WEATHER COVERAGE: Tune in to The Weather Network for the latest updates on Arthur. Our team of reporters provide you with the most accurate and up-to-date coverage.

In addition, torrential downpours, frequent lightning, 2 cm hail and wind gusts to 100 km/h are possible, EC adds.

10:25 AM EDT - Tornado Warned cell: pic.twitter.com/Xoip6JZlHV

— Dayna Vettese (@daynavettese) July 3, 2014

If threatening weather approaches, take cover immediately, officials warn.

"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," EC says. "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."