Powerful system: consequences over 3000 kilometers

3000 kilometers

An unusual system has consequences on a large part of eastern North America. By stretching over more than 3000 kilometers, this disturbance from the Gulf of Mexico transports an astronomical quantity of energy, causing a multitude of phenomena in its path.

Blizzard conditions

By Friday, northern Quebec will have to deal with a strong winter storm. Blizzard conditions are anticipated with abundant snow and strong winds. The gusts could reach 100 km/h in places. In total, from 30 to 40 cm would accumulate in places. Meanwhile, south of the border, Florida and southern Georgia may know the frost next night.

Violent thunderstorms

In the south of the border, a risk of violent thunderstorms lies almost entirely from the East Coast, from Boston to Miami. These manifestations of violent time are caused by a strong thermal contrast. In fact, this system generates an atmospheric river whose energy source is drawn from the Gulf of Mexico. Recall that this phenomenon is defined by a long corridor of humidity transported by the winds at altitude. This large amount of energy extends over thousands of kilometers.

A lot of rain

In Quebec, more than 60 mm of rain are anticipated in places. In Greater Montreal, 30 to 40 mm are planned. In the United States, the flood could generate up to 100 mm in certain States of New England, between New York and Boston.

With the collaboration of Patrick Duplessis, meteorologist.

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