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Visibility was the biggest problem on the roads Wednesday morning. ((Kevin Yarr/CBC))

Classes were cancelled around Nova Scotia and across P.E.I. on Wednesday as the Maritimes got smacked with another winter reminder.

Nova Scotians awoke to a blanket of snow, with 15 centimetres falling on some parts overnight. A snowfall warning remained in effect for most areas of the mainland, while northern Inverness County in Cape Breton was warned about high winds.

The snow was just getting started around 6 a.m. on P.E.I., later than expected. The snow struck the eastern end of the province first. About 15 centimetres was expected.

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Billy Gill, a snowplow dispatcher in P.E.I.'s Queens County, said the storm came in heavy from Wood Islands.

"It's still very hard to see out there. The visibility is close to nil," he told CBC News. "The wind is up [to] 40, gusting to 60 there now. It's moving this way. That's where the storm hit the Island first, in Wood Islands area, and moving from east to west."

Driving conditions were poor as wind whipped up snow into whiteouts. Police urged motorists to be careful. There were reports of vehicles off the road in Nova Scotia, but no serious injuries.

In N.S., more than 2,600 homes and businesses were without electricity as of 7:30 a.m., mostly in the Shelburne, Liverpool and Windsor areas. There were no power outages reported on P.E.I.

Many flights at the Halifax Stanfield International Airport were cancelled or delayed. Early morning flights at the Charlottetown Airport were delayed.

The bad weather was expected to taper off in Nova Scotia. Richard Lafortune, a meteorologist with Environment Canada, said only three to five centimetres of snow would fall in the afternoon.

"When the snow returns this afternoon it shouldn't be anywhere near as bad as it was this morning," he said.