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Incoming cold front set to trigger severe thunderstorms across Quebec

Tuesday, August 11th 2020, 8:50 am - Temperatures and humidity hit their high point in Quebec Tuesday, crowned with severe storm risk.

Hot temperatures and suffocating humidity grip Quebec, though people in the province can take comfort knowing this will be the peak of this latest bout of heat. Before a gradual easing in temperatures, however, people should prepare for thunderstorms, with severe potential through Tuesday afternoon and evening. A closer look, below.


WEATHER HIGHLIGHTS

  • Humidex values feel at or near 40 across Quebec Tuesday
  • Severe storms arrive in the afternoon and evening
  • Gradual return to more moderate temperatures beyond
  • Keep on top of active weather ALERTS in your area.

There will be no escaping the extreme peak summer heat and humidity in Quebec Tuesday.

Heat warnings blanket much of the province from the Ontario border through to the Gulf of St. Lawrence, and daytime highs at or a bit above 30°C will feel nine or 10 degrees warmer with the humidity.

Quebec Heat

That dense muggy soup is an excellent primer for severe storms, with the right trigger, and that trigger will come Tuesday in the form of a cold front moving in from Ontario.

Severe thunderstorm watches are already in effect for the entire St. Lawrence Valley, including Montreal and Quebec City, even ahead of the storms' arrival in the afternoon and evening hours.

Quebec storm risk

Storms that do cross the severe threshold will feature strong wind gusts, heavy local downpours, and perhaps some small hail as well.

BEYOND: GRADUAL EASING OF EXTREME TEMPERATURES

That cold front will help sweep at least some of the humidity out of Quebec, though not by much. Still, in its wake, humidex values look to be in the mid-30s Wednesday and Thursday, which is not nothing, given how extreme Tuesday's conditions would have been.

Friday and Saturday will see daytime highs ease, to the mid-20s, feeling about 30 with the humidity, a far cry from earlier in the week.

WATCH BELOW: SURFACING WHALES DELIGHT ONLOOKERS IN QUEBEC

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