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Rain soaks eastern Canada

St. Lawrence Valley could receive more than 50 mm
St. Lawrence Valley could receive more than 50 mm

Sana Ahmed, staff writer

May 5, 2011 — Soggy weather continues to soak parts of eastern Canada, while parts of southern Quebec deal with major flooding.

Heavy rainfall expected this week
Heavy rainfall expected this week

It's officially spring. And in the Saint Lawrence Valley, this means rain and lots of it.

“It's springtime,” says Mark Robinson, a meteorologist at The Weather Network. “Soaking, long-term rains are pretty normal for this time of year.”

A low pressure system that's drawing moisture from the Gulf of Mexico is bringing a significant and long duration of rainfall to communities near the Saint Lawrence Valley this week.

Already, about 40 mm has fallen in some communities. That's causing rivers to swell and, in some cases, spill their banks.

“There's a possible threat of flooding,” says Robinson. It depends on how soaked the ground is and the state of reservoirs. It's highly dependent on small scale things like emptying of dams.”

Rainfall totals so far
Rainfall totals so far

Environment Canada says the low pressure system will stall over the province of Quebec until the end of the week. That has emergency officials concerned about the water levels in the Champlain Lake and Richelieu River. Hundreds of people have already been evacuated as a precautionary measure.

The system continued to push east into the Maritimes where flood officials are keeping a close eye on the Saint John River as well.

With files from Andrea Stockton and Lyndsay Morrison

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