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Soggy system drenches Ontario

Keep the rubber boots handy this week
Keep the rubber boots handy this week

Andrea Stockton, staff writer

April 26, 2011 — An umbrella and rubber boots will be mandatory accessories in southern Ontario this week. Up to 80 mm of rain is possible through Thursday.

Risk of thunderstorms in the region, some could be severe
Risk of thunderstorms in the region, some could be severe

If April showers bring May flowers, gardeners in southern Ontario are in luck. A soggy system that's drenching the region this week could bring upwards of 80 mm of rain to some places.

“The system pushed into the province Monday afternoon and will stall over the area until Friday,” says Brian Dillon a meteorologist at The Weather Network. “Up to 50 mm of rain is possible in some places through Tuesday.

Dillon adds that the second wave of moisture will move in on Wednesday bringing an additional 30 to 40 mm of rain.

“With an abundant amount of rain this week, special weather statements have been issued for parts of southern Ontario. And for areas farther north, there's the potential for a rain/snow mix,” warns Dillon.

There is also a fairly good chance of thunderstorms developing over the next couple of days. Dayna Vettese, a meteorologist here at The Weather Network says the incoming system is bringing in some of the right ingredients to produce strong storms.

“The low pressure system is bringing in warmth, moisture and lift.” But Vettese also adds that the cooler temperatures off the Great Lakes this time of year play a big factor in whether or not thunderstorms will develop.

Rainfall totals in Toronto so far this spring
Rainfall totals in Toronto so far this spring

So far this spring, the province has been dealing with below normal temperatures and above average precipitation.

The city of Toronto for example, has seen over 70 mm of rain this April, compared to the normal 62.4 mm for the entire month.

“And that's without the totals from the recent system this week,” notes Dillon.

The La Niña weather pattern is contributing to the increase in precipitation and cooler temperatures. La Niña meaning the little girl, names the appearance of cooler than normal waters in the eastern and central Pacific Ocean. Simply put, it's called “a cold event.”

Most of the country has experienced a cool and wet spring thanks to La Niña. The trend is expected to dissipate in June.

With files from Matt Casey

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