By Brian K. Sullivan Feb. 26 (Bloomberg) — A winter storm that pummeled New York City for two days broke a monthly record for snowfall in Central Park that stood for 114 years, according to the National Weather Service. The storm killed at least three people, knocked out power to more than 700,000 electrical customers across the U.S. Northeast, grounded at least 3,844 flights from regional airports and disrupted shipping as far away as Maine. As the city digs out, forecasters are already watching another storm that may hit the U.S. East Coast next week. “It’s pretty significant for our area to see this kind of snowfall,” said Jeffrey Tongue, a weather service meteorologist in Upton, New York . “This is stuff that doesn’t happen too often, maybe a couple of times a century.” Manhattan’s Central Park had received 36.9 inches (93.7 centimeters) as of about 5 p.m. today, the most ever for a single month, the weather service said. The previous record for February was 27.9 inches in 1934, and the mark for a single month was 30.5 inches in March 1896. Almost 21 inches blanketed the city during the storm, which began yesterday at about 8 a.m. The record for a single snowstorm was set Feb. 11-12, 2006, when 26.9 inches fell. Storm Warning Canceled With the storm winding down and moving east, the weather service dropped a winter storm warning and replaced it with an advisory at about 4:30 p.m. Tongue said the advisory was in place to warn drivers that roads may be slick tonight, and wasn’t a caution that more snow was on the way. A few snow showers may linger overnight, he said. At its peak, the storm was powerful enough to set daily records for both rain and snowfall in Newark, New Jersey, and blast a 90-mph wind gust past a weather service buoy in the Atlantic. Its central barometric pressure rivaled that of hurricanes. Heating oil gained on speculation stockpiles would fall as winter storms boosted demand. Heating oil for March delivery added 3.87 cents, or 1.9 percent, to settle at $2.0249 a gallon on the New York Mercantile Exchange. U.S. demand for heating oil through March 5 will be 6 percent above normal for the period, according to David Salmon , a meteorologist at Weather Derivatives, which forecasts temperature changes and the impact on demand for commodities. Flights Grounded At Newark Liberty International, a hub for Continental Airlines Inc., 65 percent of today’s 607 scheduled commercial and freight flights were canceled, according to FlightStats.com, which tracks airline and airport performance. At LaGuardia, 61 percent of the 577 scheduled departures were scrubbed, and John F. Kennedy International reported 39 percent of its 579 flights canceled. Major U.S. carriers scrubbed 2,344 flights today, mostly across the northeast. Delta Air Lines Inc ., the world’s largest carrier, trimmed 500 flights, said Susan Elliott , a spokeswoman. The Atlanta-based airline doesn’t anticipate more cancellations this weekend, “although there will be some delays,” she said. Continental grounded 500 flights, including all 200 of its regional jet flights at Newark, said Mary Clark , a spokeswoman. Demand for jet fuel, averaged over the four weeks ended Feb. 19, was down 1.9 percent from a year earlier, according to the Energy Department. “The storm just kills jet fuel demand,” said Andy Lipow , president of Lipow Oil Associates LLC in Houston. “When an airline cancels its flights, it’s not like it doubles up the next day.” Week’s Second Storm The system was the second winter storm of the week for the U.S. Northeast. It came just weeks after parts of the mid- Atlantic region set seasonal records for snowfall. A Brooklyn man was killed in Central Park by a falling tree branch, while two people died in car accidents on slick roads near Lebanon and Victor, New York. New York City’s public schools shut down. Utilities in the Northeast reported a total of more than 700,000 homes and businesses without power this morning. New York-based Consolidated Edison Inc. had as many as 40,000 customers lose power in Westchester County, and about 500 in Manhattan, Brooklyn, Queens, Staten Island and the Bronx, said a spokesman, Chris Olert . New Hampshire was especially hard-hit, and Governor John Lynch declared a state of emergency. About 330,000 residents lost power because of the storm and accompanying high winds, said Katya Brennan, a spokeswoman for the state Department of Safety. Deliveries Delayed Crude oil tanker deliveries to a Portland, Maine, pipeline that supplies two Montreal-area refineries were delayed a second day because of unsafe swells and high winds. A storm expected to hit the West Coast tonight may be the Northeast’s next big problem, said Tom Kines , a senior expert meteorologist with AccuWeather Inc. Some forecast models keep the storm fairly far south, although Kines said he isn’t sure that will happen. “I don’t trust it,” he said. “If this storm we are seeing now is getting out of the way, it will allow this next storm to move farther north. We are getting into the time of year where rain is more favored, but in this weather pattern anything goes.” To contact the reporter on this story: Brian K. Sullivan in Boston at bsullivan10@bloomberg.net ;