Atmospheric ‘gridlock’ on tap in Atlantic Canada, that means heavy rain, winds

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Atmospheric ‘gridlock’ on tap in Atlantic Canada, that means heavy rain, winds

This new workweek of November threatens some unsettled weather across parts of Atlantic Canada. The region will essentially be “stuck” in an atmospheric gridlock, with systems lingering over the East Coast for much of this week.

Brace for heavy rain and powerful winds as a result of the back-to-back storms, with localized flooding and power outages some potential impacts through the week. A temperature rollercoaster could also bring some localized mixed wintry precipitation to higher terrain.

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Rounds of unsettled conditions this week

A strong high pressure system off the coast of Europe is going to prevent systems from tracking through Atlantic Canada this week, and instead will have them lingering over the region for days on end.

Baron – ATL upper level pattern – Nov13

After a milder and wet start to the week on Monday, a second system will track in on Tuesday, bringing rain to the Maritimes, and even some localized mixed precipitation to some higher terrain as temperatures fall.

The system then pushes into Newfoundland, stalling out just south of the Avalon Peninsula. The system will be wedged between the high off the coast of Europe, and an incoming high pressure system from Ontario and Quebec.

This pattern sets up a boundary over central and eastern Newfoundland, which can bring persistent heavy rain from Tuesday night through Thursday. Current forecast models suggest that 50-100+ mm of rain could fall during this time *******.

Baron – ATL rain through Friday – Nov11

Localized flooding is a concern in areas that see the heaviest rain.

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Powerful winds and the threat for outages

At the same time, winds will also increase drastically over Atlantic Canada, gusting between 70-90 km/h, and even higher along exposed coastlines.

The combination of strong winds and heavy rain could lead to power outages across the *******-hit areas.

Baron – ATL winds – Nov11

As the high pressure from Ontario and Quebec tracks to the northeast, this then pushes the system back west, bringing more rain to the Maritimes Thursday evening and into Friday. This could also lead to higher rainfall totals for the region.

There is less confidence however, in how the system will react late week, and if it will bring additional rain to the Maritimes. It’ll be important to stay up-to-date on the forecast and any

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