Threat for flash floods, landslides as storm hits Quebec

Threat for flash floods, landslides as storm hits Quebec

Threat of flash floods, landslides as storm hits Quebec

A threat of flash floods, landslides as storm hits Quebec: A significant system over the Great Lakes will continue to affect southern and central Quebec where widespread rainfall and storm surge warnings are in place.

As much as 70 mm of rain had already fallen in some areas by Friday afternoon, with additional amounts expected through Saturday.

“A low-pressure system currently over New York City will move to lie over Quebec Saturday evening,” says Environment Canada. “It will cause more rain over basically the same regions affected by the first system. Total rainfall amounts of 40 to 70 mm are expected.”

Residents are being urged to prepare for flash flooding and water pooling on roads.

“Localized flooding in low-lying areas is possible,” EC warns. “Landslides may occur in vulnerable areas such as steep slopes.”
Rainfall amounts will be heaviest across Montreal, the Eastern Townships and up through the St. Lawrence River Valley overnight Friday into Saturday, gradually tapering off on Sunday afternoon.

Across central and south central Quebec, rain will start to mix with and change over to snow in higher elevations, with the heaviest amounts falling through the day on Saturday.

“Light snow showers will persist across central and northern Quebec Sunday through Monday, although snowfall amounts will not be significant at this time,” says The Weather Network meteorologist Brad Rousseau.

Rain and snowfall totals:

RAIN: Between 50-120 mm of rain is expected across the St. Lawrence River Valley, with 60-80 mm across the Gaspe.

SNOW: Rain-snow mixes possible across Montreal. As much as 5-10 cm of snow could fall around Mont-Tremblant and the higher elevations through the Laurentians.

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