Winter is coming to Atlantic Canada.

A large winter storm is blasting the U.S. Northeast, and that means an onslaught of snow, ice and rain along Canada’s East Coast on Wednesday, according to Environment Canada.

Environment Canada issued weather warnings in all four Maritime Provinces Wednesday as a low-pressure system approaches the region with wintry weather, ending an enjoyable stretch of mild fall weather.

Forecasters say the heaviest snowfall is expected in New Brunswick, where more than 35 centimetres could blanket the ground starting Wednesday and continuing Thursday. They are calling for lesser amounts in northwestern Nova Scotia, Prince Edward Island and Newfoundland.

Southern Nova Scotia is expected to be hit with heavy rain -- up to 60 millimetres -- that could cause flash flooding.

Environment Canada says the weather is expected to create hazardous conditions and residents are advised to postpone non-essential travel plans when possible.

Atlantic Canada is being sideswiped by strong winds resulting from the storm, a nor'easter currently bearing down on the U.S., and is wreaking havoc with U.S. Thanksgiving holiday travellers in the crowded Washington-to-Boston corridor.

According to flight-tracking service FlightAware, as of 11:20 a.m. Wednesday, airlines have scrapped approximately 460 flights on Wednesday and 104 flights on Thursday.

Buffalo -- a popular air-travel waypoint for budget-conscious Ontario travelers – will not be overtly impacted by the storm, according to U.S. meteorologist Andrew Orrison.

With files from the Canadian Press