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Winter storm could bring up to 50 cm of snow to Atlantic Canada

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Environment Canada has issued a winter storm warning for large swathes of Nova Scotia and Newfoundland, with up to 50 centimetres of snow expected in some areas.

Southern and eastern Nova Scotia could see 15 to 25 cm of snow and wind gusts of 60 to 80 km/h as the powerful storm hits the province Tuesday afternoon through Wednesday morning. The highest snowfall is expected along Nova Scotia's Atlantic coast. Many flights to and from Halifax have already been cancelled.

Even more snow is anticipated in eastern Newfoundland, with 30 to 50 cm in the forecast and the possibility of larger amounts in some areas. The storm is expected to impact Newfoundland from Wednesday morning until early Friday, with the heaviest snow arriving by Wednesday night. Two to three cm of snow per hour is possible in the province, with wind gusts reaching 80 km/h. Some flights to and from St. John's have been cancelled.

"Strong winds and fresh snow will likely give whiteout conditions to some areas," Environment Canada warned. "Winter storm warnings are issued when multiple types of severe winter weather are expected to occur together."

The hazardous winter conditions are being caused by a passing nor'easter, which is a type of North Atlantic cyclone.

The storm has already swept across the northeastern U.S., causing some airlines to cancel and delay flights to and from cities like New York, New Jersey, Boston and Philadelphia.

In Newfoundland, storm surge warnings are also in place for St. John's and many other coastal communities, especially for northeast-facing shorelines. Waves from five to seven metres are expected during high tide late Wednesday night.

"Impacts from storm surge are expected, including coastal flooding, beach erosion, minor infrastructure damage, spread of coastal debris, and localized coastal road washouts," Environment Canada said.

Snow squalls behind the storm will accumulate additional snowfall amounts for the north shore of Nova Scotia, Cape Breton Highlands, and eastern Prince Edward Island Wednesday afternoon through Thursday morning. Winter storm watches are in place for parts of Nova Scotia, Newfoundland and Labrador, with up to 30 cm of snow expected in some areas.

Environment Canada has also issued snowfall warnings for southwestern Alberta, including Fort Macleod, Crowsnest Pass and Waterton Lakes National Park. Heavy snow that began overnight is expected to bring a total of 12 to 20 cm by the end of the day Tuesday.

"Visibility may be suddenly reduced at times in heavy snow," Environment Canada explained. "Prepare for quickly changing and deteriorating travel conditions."

A weather advisory for central Ontario cautioned about reduced visibility and up to 10 cm of snow on Tuesday morning for areas including Haliburton, North Bay, Parry Sounds, Huntsville and parts of Algonquin Provincial Park. The Ontario warning was lifted by the afternoon.

As much as 80 cm of snow fell on Nova Scotia and Prince Edward Island in another storm earlier in the month.

With files from CTV Atlantic

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