Greenland ridge funnels active weather parade into Atlantic Canada
Atlantic Canada remains under an unsettled weather pattern, influenced by a Greenland ridge that is funnelling a series of lows into the region.
A series of weather systems continues to impact Eastern Canada, driven by a persistent blocking pattern.
Typically, weather systems that leave North America and travel across the Atlantic are no longer a concern. However, a Greenland ridge has created a blockage over Eastern Canada, with a storm parade expected for the next week or so.
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This ridge, or high pressure system, will disrupt the usual pattern of storms moving from Canada to Europe, halting their typical west-to-east flow.
In meteorological terms, the ridge represents a "rise" in the atmosphere, while the neighbouring trough symbolizes a "dip." The ridge acts like a protective barrier, while the trough forms a low pressure zone where systems tend to settle. Unfortunately, this trough is positioned over Atlantic Canada and could linger for the next week.
Because of the time of year, the lack of significant Arctic air upstream reduces the chances of heavy snowfalls in major cities. Meanwhile, the trough's position will bring some contrasting impacts.
On its leading edge, unseasonably warm air is being funnelled into Labrador and even Nunavut, where temperatures are running 10-15°C above normal.
On the backside of the trough, cooler air is settling, leading to temperatures 2-4°C below seasonal norms across Ontario, Quebec, and the Maritimes.
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One of the lows will intensify as it tracks north into Newfoundland late Friday, bringing wind gusts up to 80-100 km/h. Environment and Climate Change Canada issued wind warnings for the Avalon and Bonavista Peninsulas, warning of damage to roofs, fences, branches, and soft shelters.
Saturday across Atlantic Canada should see a break in the active weather, with only some scattered showers to worry about.
Another low, however, will arrive in the Maritimes on Sunday after bringing a messy mix of winter weather to Ontario and Quebec.
In addition to gusty winds, we should see impactful snow fall across much of New Brunswick ahead of a warm front.
Behind the front, in Nova Scotia, we expect to see temperatures rise above 10°C, which means the province will see widespread rain with this system.
Blustery and unsettled conditions are forecast to linger into early next week, but don't worry, quieter weather is ahead.
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Stay with The Weather Network for more information and updates on your weather across Atlantic Canada.