Flights have been cancelled in Newfoundland and officials are warning drivers to be careful on the road, as a major storm system brings heavy snowfall across the province.

"There have been a number of crashes in the central region, not so much on the Trans-Canada Highway but a lot on the secondary roadways," Const. Steve Conrad, of the RCMP Traffic Services, told NTV News on Friday.

"With the weather that we've had, especially on days like today, people have to realize that they're the primary ones in control of their vehicles and they have to drive according to the weather conditions."

It's the same low-pressure system that dumped mixed precipitation on the Maritimes the day before.

A number of flights connecting St. John's International Airport to other parts of the country were either delayed or cancelled Friday.

One woman waited several hours for a flight to Edmonton, only to be told she would have to return to the airport several days later.

"We're being told we won't get one until the ninth or tenth of January," she said.

Air Canada warned morning flights out of Halifax Stanfield International Airport may also face disruptions due to the storm, which was the fifth winter blast to hit the region this season.

CTV Atlantic reported a number of cancellations and delays out of the airport on Friday.

Government offices and businesses were closed in Newfoundland as more than 20 centimetres of snow fell on the province, making it difficult for snow removal crews to keep up with demand.

Winter storm warnings have been issued for much of eastern and southern Newfoundland as an additional 10 to 15 centimetres of snow is expected for the area, according to a statement on Environment Canada's website.

Portions of the northeast coast and northern Avalon can expect up to 25 centimetres of additional snowfall.

Visibility will be reduced to near zero today as the low pressure system, located about 240 kilometres south-southwest of the Burin Peninsula, will continue to track northeastward and strengthen its intensity as it passes by the Avalon Peninsula.

Police are warning motorists to stay off the roads as winds, gusting up to 90 kilometres per hour, have created massive drifts across some roadways.

Meanwhile, Nova Scotia, Prince Edward Island and parts of southeastern New Brunswick began the clean-up process after the area received a mixed bag of precipitation Thursday and early Friday morning.

Between five to 10 centimetres of snow, mixed in some areas with freezing rain and ice pellets, began to fall on the region Thursday afternoon causing treacherous road conditions for Maritime motorists.

Much of southeastern New Brunswick is under a winter storm watch as a low pressure system is expected to move into the area on Saturday with "the potential development of dangerous winter weather conditions in these regions," Environment Canada reports.

Snow from this system will likely begin over western New Brunswick Saturday morning and should reach eastern regions by noon.

"At this time snowfall of 10 to 15 centimetres are expected over the southern half of New Brunswick with slightly lesser amounts expected over northern areas. Snow will likely change to or become mixed with rain late in the day over southern areas," says Environment Canada.

Last week, the Atlantic region was hit with the fourth major storm of the season, as a weather system pummelled the provinces with heavy snowfall and high winds. Thousands of people were left without power.

With files from NTV News and The Canadian Press