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7 year oldResidents of eastern Quebec and parts of Ontario are bracing for a deluge of rain that could make flooding worse, and the storm system responsible for the wet conditions is expected to reach New Brunswick and Nova Scotia Friday night, Environment Canada says.
The flood problems are due to a number of things:
Put these things all together and you have a perfect storm, so to speak.
"It's tracking northeastward very slowly, which is one of the problems," Peter Kimbell, warning preparedness meteorologist with Environment Canada said of the system. "Because it is such a slow-moving system, it has a lot of time to dump a lot of rain."
Rain is expected to fall across southern Ontario through to Saturday, Kimbell said. Regions can expect anywhere from 30 to 70 millimetres of rain over the next 24 to 36 hours.
Quebec has already faced flooding in Gatineau, Rigaud and Montreal. Twenty-five homes on Île Verte, a small island that is part of the city of Laval, are under an evacuation order. More than 100 communities in the province have been affected by the threat of rising water levels.
On Thursday, McGill University professor Frédéric Fabry, who researches precipitation physics at the university's department of atmospheric and oceanic sciences, told CBC's Daybreak that warm temperatures, followed by a quick melt of the snow pack and heavy rains have contributed to the Quebec flooding.
"That water is finally beginning to arrive near the St. Lawrence River, following the major tributaries of the St. Lawrence River — the Ottawa River, the Saint-Maurice River and all these others," Fabry said.
Ottawa and Montreal had almost double the average precipitation for the month of April. And that's together with snow melt. In many areas the ground is just saturated, unable to absorb any more water.
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