TORONTO — Southern Ontario, upstate New York and the mid-Atlantic-New England regions are about to get walloped by winter later today and tomorrow.

Environment Canada says roads and highways could be treacherous for driving in many parts of Southern Ontario, which is expected to get between 10 and 25 cm of snowfall between tonight and tomorrow.

The GTA could see about 12 to 17 cm, while 25 cm could dump on the Niagara area.

High-sided vehicles may also run into some difficulty with the strong winds the storm will also bring. Winds could gust to 70 km/h, creating dangerous whiteout conditions — especially on highways flanked by flat plains.

A heavier band of snow will rotate northwest tonight and early Friday, reaching the Peterborough, then Ottawa and Montreal.

The heavy snowstorm, which hit Texas on Tuesday, is expected to dump two feet on New York and northeastern Pennsylvania, according to AccuWeather.com.

PennDOT says travelers should expect major delays and should carry emergency survival kits in their vehicles.

The mid-Atlantic and New England could see close to the same amount of snow.

Somewhat luckily for Atlantic Canadians, a high-pressure system over Atlantic Canada is expected to trap the worst of the storm over New England through Saturday.

However, the east coast will experience some very high winds, as well as a combination of heavy rain and sleet.

Melted and rain snow could lead to some flooding problems from southern New England to eastern Maine and Nova Scotia.