Expired News - Frost advisories replace summer heat in Atlantic Canada - The Weather Network
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Frost advisories replace summer heat in Atlantic Canada


Digital writers
theweathernetwork.com

Friday, September 29, 2017, 8:22 AM - The mid-summer-like heat that dominated much of eastern Canada this week has begun to make way for cooler, more seasonal days, with frost advisories in effect for New Brunswick and Newfoundland.

An area of high pressure that's been more or less stagnant since Hurricane Irma rolled into the southeastern U.S. finally started to shift on Wednesday, and that will see temperatures back to autumnal levels through the weekend.


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High temperatures crept toward the 30 degree mark for parts of New Brunswick on Monday and Tuesday. However, as a cold front continues to drag south of Atlantic Canada, daytime highs are expected to only reach the teens.

"Temperatures are forecast to drop below zero in northwestern New Brunswick, and to near zero elsewhere, beginning near midnight," says Environment Canada. "Frost is expected, except near the coast where northerly winds blow onshore."

Meanwhile, another 30-40 mm mm of rain can be expected for the southern Avalon Friday, with total amounts to be in the 80-90 mm range in some parts. Adding to the rainfall is the tropical link, as the cold front continues to tap into some of the moisture associated with Tropical Storm Maria. The cyclone is expected to move far enough to the southeast to avoid any significant direct impact on Atlantic Canada.



Even with the storm forecast to track well offshore, parts of the Atlantic coast could see rough surf and dangerous rip currents late week.

In Labrador, a low pressure system will likely bring rain and snow through Saturday and Sunday.

Looking ahead

One thing the cold front does herald is a return to a more fall-like pattern across the east, as a large upper-level trough swings into the region and drives the jet stream back to the south.

"Fair and cool to start next week, then turning warmer for a day or two mid-week, then cooler late week," says The Weather Network meteorologist Dr. Doug Gillham. "No major weather systems, though it could be unsettled late week with a cold front."

Check back for updates as we continue to monitor the forecast.

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