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Heavy rain to soak southern Ontario, isolated thunderstorm risk on Tuesday

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Digital writers
theweathernetwork.com

Monday, April 28, 2014, 8:24 AM -

Enjoy the sunshine while you can, as a slow moving, moisture packed system will begin to impact parts of southern Ontario Monday.

"Rain moves into southwestern Ontario mid afternoon Monday and makes its way to the Greater Toronto Area overnight," says Weather Network meteorologist Kelly Sonnenburg.

The rain is expected to stick around for much of the week.


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According to Monica Vaswani, another meteorologist at The Weather Network, the relentless wet weather will be courtesy of an atmospheric blocking pattern, known as a "Rex Block."

"This unique weather pattern forces high and low pressure systems to remain nearly stationary," explains Vaswani. "This allows for similar weather to continue for a number of days."

The heaviest rain is expected on Tuesday and Wednesday, with 20 to 40 mm possible in some places. 

It's all part of the same system that's been bringing severe and violent storms to parts of the U.S..


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"The chance for isolated thunderstorms creeps into the Windsor, Chatham-Kent area Tuesday afternoon," says Sonnenburg.

The greatest threats with these storms in Ontario will be heavy rain, gusty winds and large hail.

Meanwhile, in northern Ontario, rain and wet snow are possible Tuesday night through Wednesday morning.

Temperatures will also remain below seasonal across much of the province throughout the week.

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