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Moisture-packed low to bring relentless rain to Ontario; Expect slow commute Tuesday and Wednesday

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Dalia Ibrahim
Digital Reporter

Sunday, April 27, 2014, 9:28 -

If you're in need of a new umbrella, now would be the time to buy one. 

A slow moving, moisture-packed low pressure system will make it's way into Ontario Monday night, with the possibility of sticking around through late next week

This is the same low that is bringing severe weather to the United States over the next couple of days.


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Risk of non-severe thunderstorms for southwestern Ontario

Risk of non-severe thunderstorms for southwestern Ontario

This relentless weather will be courtesy of atmospheric blocking pattern, known as a Rex Block

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


UMBRELLA WEATHER: Umbrella weather: Rainy week ahead for Ontario


"This pattern started off as an omega block, which is named after the omega shape the jet stream makes," explains Gina Ressler, another meteorologist at The Weather Network. "However, over the next few days it will transition into a Rex block, where the upper is actually directly south of the upper high.


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This system will impact all of Ontario over the next several days, bringing wet weather across the province. 

The heaviest rain will be Tuesday and Wednesday, where around 20 to 40 mm is possible. 

"There's even a risk for non-severe thunderstorms for southwestern Ontario with this system," adds Ressler. 


RELATED: Nearly one week of rain ahead for Ontario


Northwestern Ontario, meanwhile, may see some wet snow with this system Tuesday night through Wednesday morning. 

Temperatures will be below season across the province throughout the week, so you may want to add an extra layer if you're heading out.

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