Significant amounts of rain are expected by Monday in Montreal and several other regions of southern Quebec, according to a special weather bulletin from Environment Canada on Sunday, just over a week after the devastating storm hit. Debby in the province.
Between 30 and 50 millimetres of rain are expected in southern Quebec, while the showers forecast for Sunday afternoon will turn into thunderstorms. According to the notice issued by Environment Canada, these storms could increase the quantities expected in municipalities.
“We’re talking about Montreal, the South Shore, but also the north of the river up to Mont-Tremblant and the Ottawa Valley,” says Nicholas Elder, meteorologist at Environment Canada.
The heaviest rainfall will occur from Sunday afternoon to Monday morning, when the wind chill could reach 31 degrees.
While the showers will ease off by then, Environment Canada is still forecasting intermittent rain through Wednesday, with cooler temperatures reaching 16 degrees.
Beware of floods
“The amounts of precipitation that are forecast are significant, but it becomes even more significant with the impacts of Debby “, adds the spokesperson, who emphasizes that the regions concerned by the special bulletin were particularly affected by last week’s storm.
Last weekend, the city of Montreal received 158 millimeters of rain after the passage of tropical storm Debby. In Laval, it was nearly 175 millimeters. Last week, Laval Mayor Stéphane Boyer said that the flooding caused by this precipitation had been “10 to 15 times worse” than that experienced in 2017 and 2019 in several regions of Quebec.
“With the precipitation that has fallen, the soils are saturated, there is no more potential for accumulation,” said Mr. Elder. In its advisory, Environment Canada recommends avoiding roads that could be subject to flooding.
On Friday morning, a burst water pipe in downtown Montreal also caused major flooding, affecting hundreds of homes in the area.