Environment Canada has issued a red tornado warning for areas in the Greater Golden Horseshoe region.The national weather agency says its meteorologists are tracking a severe thunderstorm that could possibly produce a tornado.“Damaging winds, large hail and locally intense rainfall are also possible,” the warning reads.The affected areas include St. Catharines, Grimsby, Welland and Niagara Region.#listen-box { box-shadow: 0 0 0 0 rgba(0, 0, 0, 1); animation: pulse 2s infinite; margin: 20px; padding: 15px;}@keyframes pulse { 0% { box-shadow: 0 0 0 0 rgba(200, 16, 46, 0.7); } 70% { box-shadow: 0 0 0 10px rgba(200, 16, 46, 0); } 100% { box-shadow: 0 0 0 0 rgba(200, 16, 46, 0); }} CLICK HERE TO LISTEN TO LIVE WEATHER COVERAGE!“This is a very dangerous and potentially life-threatening situation,” Environment Canada added.People in the area are being told to immediately take cover in a basement, interior room or a sturdy shelter when threatening weather approaches.“If no shelter is available, lie in a low spot and protect your head from flying debris,” Environment Canada explained. “If you are out on the water when threatening weather approaches, return to shore and seek shelter, if possible, or move directly away from the path of the tornado. Otherwise, wear your lifejacket, lie face down and protect your head,” it added.The area is also under a separate yellow rainfall warning with up to 50 mm expected on Sunday.Multiple thunderstorms will pass through the area before drying up for the Civic holiday.