New York closed Interstate 84 to truck traffic between Pennsylvania and Connecticut. A 74-year-old man died after being struck by a car in Poughkeepsie; the driver said she lost control in the snowy conditions, police said.
Snowfall predictions were 10 to 15 inches in the lower Hudson Valley and 12 to 16 inches on Long Island. Depths of 6 to 18 inches were forecast upstate.
About 9,000 customers were without power statewide Friday night, mostly on Long Island.
At least 350 traffic collisions were reported in Toronto, and at least three people died in southern Ontario.
Many flights were canceled in Toronto, some of them because destination airports in the United States were closed by the snow.
The storm was predicted to bring a mixture of rain, snow and ice to the state.
In the Pocono Mountains, where more than a foot of snow could fall, schools were closed or dismissed early, and flights were canceled at Scranton/Wilkes-Barre Airport. Snow fell at a rate of 1 to 1 1/2 inches an hour in some areas Friday evening, turning major arteries in northeastern Pennsylvania slushy or snow-covered.
Farther south, more than a hundred flights were canceled out of Philadelphia Airport. The city was forecast to get 2 to 5 inches of snow.
Utility companies reported about 1,200 customers without power by Friday night.
Utility companies reported about 122,000 customers without power Friday night but conditions were only expected to get worse as the state braced for up to 2 feet of snow.
Interstate 95 and other major highways were closed to traffic and transportation officials limited commercial traffic on the Newport Pell Bridge because of winds gusting more than 60 mph.
About 100 state plows were already out on the roads, bolstered by 200 private contractors, officials said.
Nonessential state workers were sent home Friday afternoon. Many schools closed and transit service was suspended at noon Friday. The last plane left T.F. Green Airport near Providence just before 1:30 p.m. Friday; no other flights were scheduled to leave until Saturday.
The storm was blamed for a multiple-vehicle accident and a series of other crashes on Interstate 89 in Bolton and South Burlington. Hundreds of schools were closed.
Northern Vermont is expected to get 4 to 8 inches of snow by Saturday morning, while central and southeastern parts of the state could get 8 to 16 inches.
Nearly 6 inches of snow had fallen by early Friday afternoon at Mad River Glen ski area in Fayston, according to a spokesman who said a total of 18 inches was possible.
Sources: State and local authorities; AP reporting