A low pressure system carrying the risk of thunderstorms, sometimes violent, is coming to southwestern Quebec on Thursday, with the potential for tornadoes in the afternoon in a context of high humidity.

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Environment Canada has issued a special weather report for the Outaouais, Montreal, Laurentides, Lanaudière and part of Montérégie sectors.

"The main threats associated with these storms are strong gusts of wind as well as torrential rain," said the federal agency, which does not exclude the possibility of tornadoes during the day.

The sky will be overcast almost everywhere in these areas where the mercury will be on the rise with a Humidex 38 in Montreal and Montérégie, while showers are expected in Abitibi and areas to the north, according to forecasts from the federal agency.

The weather will be generally cloudy in the center of the province with still seasonal temperatures and the risk of thunderstorms for the regions of Quebec, Saguenay and Mauricie.

In the east of the province, there are some sunny spells with alternating sun and clouds in the Bas-Saint-Laurent and Gaspésie regions, while on the North Shore showers are expected in places after -midday.