Harsh snap back into winter looms for parts of Atlantic Canada late week

Digital Writers
·3 min read
Harsh snap back into winter looms for parts of Atlantic Canada late week
Harsh snap back into winter looms for parts of Atlantic Canada late week

This week has been one of the best stretches for spring weather in the Maritimes this year, and that is quite evident as some places are set to either tie or have their second-longest stretch for consecutive days of 10°C or above temperatures in March. The record, hard to beat, is from March 2012 where our memories would take us back to not just a mild stretch, but a warm period of days in the middle and end of March.

However, all good things must come to an end, and that will start Thursday with a risk of unsettled weather, followed by a potent spring storm eyeing Atlantic Canada for Friday, lasting into the weekend. However, there are some computer model discrepancies on exact track and impacts from the forthcoming significant storm. What we know so far, below.

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THURSDAY-SATURDAY: UNSETTLED WEATHER RETURNS WITH MAJOR SPRING STORM ON DOORSTEPS

Thursday will see the chance for some scattered showers in the Maritimes, an appetizer of what's to come. The mild weather will continue, with double-digit temperatures for New Brunswick and parts of Nova Scotia.

ATLThursTemp
ATLThursTemp

Beyond Thursday's threat of showers will be a pretty potent spring storm on Friday and Saturday. The track of the system will be important as multiple precipitation types will be at play.

The low will continue to pump in warm air from the south but a strong high pressure to the north will continue to pump in colder air from the north, which will enhance the risk for ice.

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Timing wise, system impacts will begin in the Maritimes Friday afternoon, lingering into Saturday morning. For Newfoundland, the low will reach the island, with impacts persisting until Saturday overnight. Precipitation will start off as rain for most area then transitioning to snow as the day progresses.

ATLRain
ATLRain

In southern areas of the Maritimes, mainly in Nova Scotia, precipitation looks to manifest as heavy rain, but in New Brunswick, P.E.I. and the Gaspe, we'll have to watch out for heavy snow and the potential of significant freezing rain and ice pellets.

Newfoundland will also be one to watch as there are some indications it could be an all-snow event, which would bring a swath of heavy snow to the province.

While it's too early for exact snowfall and rainfall totals, a large part of Newfoundland may see 15-30 cm of snow, but models disagree as to whether that will be through the Burin and Avalon peninsulas or further to the north through Gander with rain for southern areas of the island.

ATLSnow
ATLSnow

However, some models that indicate there is the chance for some areas to start as rain, which would reduce the amount of snow that accumulates.

"There are still come critical differences in the models regarding the storm track. Most likely scenario would bring heavy snow to northern New Brunswick, the Gaspe Peninsula and areas northeast of Quebec City," says Weather Network meteorologist Dr. Doug Gillham.

SUCCESSIVE DAYS ABOVE 10°C

Some places in the Maritimes are set to either tie or have their second-longest stretch for consecutive days of 10°C or above temperatures in March. The record, hard to beat, is from March 2012.

YHZMarch10C
YHZMarch10C
YFCMarch10C
YFCMarch10C

Check back as we continue to monitor the Atlantic Canada forecast.