By Jay Lindsay, Michelle R. Smith, Associated PressPROVIDENCE, R.I. -- New Englanders began the back-breaking job of digging out from as much as 3 feet of snow Saturday and emergency crews used snowmobiles to reach shivering motorists stranded overnight on New York's Long Island after a howling storm swept through the Northeast. About 475,000 homes and businesses remained without power late Saturday night, down from a peak of about 650,000, and some could be cold and dark for days. Roads across the New York-to-Boston corridor of roughly 25 million people were impassable. Cars were entombed by drifts. Some people found the wet, heavy snow packed so high against their homes they couldn't get their doors open. "It's like lifting cement. They say it's 2 feet, but I think it's more like 3 feet," said Michael Levesque, who was shoveling snow in Quincy, Mass., for a landscaping company. In Providence, where the drifts were 5 feet high and telephone lines encrusted with ice and snow drooped under the weight, Jason Harrison labored for nearly three hours to clear his blocked driveway and front walk and still had more work to do. His snowblower, he said, "has already paid for itself." At least five deaths in the U.S. were blamed on the overnight snowstorm, including an 11-year-old boy in Boston who was overcome by carbon monoxide as he sat in a running car to keep warm while his father shoveled Saturday morning. Rhode Island Gov. Lincoln Chafee cautioned that while the snow had stopped, the danger hadn't passed: "People need to take this storm seriously, even after it's over. If you have any kind of heart condition, be careful with the shoveling." Blowing with hurricane-force winds of more than 80 mph in places, the storm hit hard along the heavily populated Interstate 95 corridor between New York City and Maine. Milford., Conn., got 38 inches of snow, and Portland, Maine, recorded 31.9, shattering a 1979 record. Several communities in New York and across New England got more than 2 feet. Still, the storm was not as bad as some of the forecasts led many to fear, and not as dire as the Blizzard of '78, used by longtime New Englanders as the benchmark by which all other winter storms are measured.