Tuesday: Strong thunderstorms and risk of supercells in Quebec

Active day

Another active day is shaping up for Quebec as overnight storms continue Monday into Tuesday. Indeed, the passage of a very weak front could cause a surge and produce violent storms in the south of the province. By Tuesday afternoon, heat and moisture in the atmosphere will act as fuel and storm cells may form.

Heavy thundershowers are likely

Areas outlined in yellow represent the risk of thunderstorms on Tuesday, while those in orange mean they could be violent. According to models, the risk of seeing these storm cells dump heavy rain, strong winds and large hail is very high. Almost the entire province is affected by this risk, while the region extends to the Gaspésie.

Lots of energy

The amount of water vapor in the atmosphere provides good fuel for thunderstorms. In fact, this moisture represents what we call precipitable water or what a storm might dump. One of the threats from these storm cells is the large amount of water falling in a short amount of time.

Cyclone risk

For now, NOAA rates a hurricane risk south of the border. However, the area may extend to the southern part of the province. Supercells can form with headwinds that create circulation. The situation will be monitored on Tuesday.

In collaboration with Bertin Ozonen, meteorologist.

See also: Watershed in Lake Saint-Pierre