Environment Canada has issued a Tornado Warning in northwestern Ontario.

The forecaster put the warning in place on Sunday evening for the Fort Frances, Rainy River, and Emo areas.

An update later in the evening adjusted the warning to the Rainy River, Sleeman and Stratton areas.

A severe thunderstorm with a history of producing a tornado was located a few kilometres southeast of Rainy River, moving east at 50 km/h on Sunday evening around 10:00 p.m.

A second severe thunderstorm, possibly producing a tornado, was located 20 kilometres southeast of Rainy River, moving northeast at 50 km/h at the same time.

The storms are capable of producing tornadoes, toonie-sized hail, and 100 km/hr wind gusts.

“This is a dangerous and potentially life-threatening situation,” the forecaster said in the warning. “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.”

If you see a tornado, Environment Canada is recommending that you 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 shelters, and move to a strong building if you can.

Emergency Management Ontario recommends that you take cover immediately if threatening weather approaches.

Tornado warnings are issued when imminent or occurring thunderstorms are likely to produce or are producing tornadoes.