White-out conditions, heavy snowfall and frigid temperatures could make driving on Long Island's roads treacherous this weekend.

Drivers are being urged to stay home as a nor'easter dumps snow on the Island and brings whipping winds that are expected to reduce visibility. Nassau and Suffolk counties are under a blizzard warning until Sunday afternoon.

Towns and municipalities across Long Island have spent days preparing for the storm. Brookhaven Highway Superintendent Dan Losquadro says the town is ready, with 250 snowplows, 450 contracted plow trucks and more than 20,000 tons of road salt.

Joe Brown, Long Island's regional transportation director, says efforts have been doubled to keep the Long Island Expressway clear. Additional equipment has been brought in to battle the snow, including 262 plows and 170 extra truck operators.

"We're fortunate with this storm because it's a weekend storm," Brown says. "Usually our biggest problem on Long Island is how do we plow the snow with traffic."

Back in 2013, cars were left abandoned on the Long Island Expressway and residents in places like Brookhaven complained that their roads went unplowed for days after a fast-moving storm dumped snow on the Island.