The snowstorm that battered the northeastern United States on Saturday moved into Nova Scotia on Sunday, creating treacherous driving conditions and causing some flight cancellations.

Environment Canada has issued snowfall and blowing snow warnings for six counties: Digby, Yarmouth, Shelburne, Lunenburg, Halifax and Queens.

The snow started before noon in the southwestern part of the province, then moved east into the Halifax area by late afternoon.

Halifax Regional Municipality had its snowplows and salt trucks out in full force and police were warning motorists to go slow.

"We are urging drivers to use extreme caution on the roads. They are getting very slippery," said Sgt. Bill Morris. "If you have to go out, leave a couple of minutes early. Don't rush yourself and drive safe."

The forecast was calling for 10 to 15 centimetres of snowfall in the Halifax area. Up to 25 cm is expected to fall in the southwestern part of the province.

Halifax Stanfield International Airport was busy preparing for the storm Sunday afternoon as extra snow-clearing crews were brought in, said spokeswoman Ashley Barnes.

"Right now we are seeing some minor delays from weather elsewhere and a couple of cancellations from flights coming from the States, so again, folks should be checking their schedules," she said.

The storm has weakened since it hit the northeastern U.S., where at least five weather-related deaths were reported.

Some areas from Washington up to New England saw up to a half a metre of snow, which crippled traffic and caused major power outages.