LYNN – For the second time in as many weeks, a powerful winter storm is bearing down on the Greater Lynn area, with anticipated snowfall expected to reach the double digits.Alan Dunham, meteorologist for the National Weather Service, said by the time Lynners and area residents wake up this morning, heavy snow will have already moved in from the blizzard-like Nor’easter. Accumulations are expected to fall between 10 to 15 inches of snow.”If you don’t have to be on the roads, it would be a good thing not to be so that the highway crews can do their stuff,” he said. “And if you have to commute to work in the morning, a ride that would normally take a half hour around 8 a.m. will take about 21/2 hours. So, it’s a good day to telecommute if you can.”Dunham said the leading edge of the storm will have arrived around midnight to 1 a.m., with snowfall expected to drop up to 3 inches per hour throughout the afternoon. Increased winds are also on tap, which will contribute to near white-out conditions at times.”The heavier snow will let up around 6 or 7 p.m., but the winds will still be going strong,” he said. “I don’t expect the storm to come to a complete end until 8, 9 or even 10 p.m.”Due to the possibility of power outages from high winds, National Grid has advised its customers to call its emergency outage reporting number at 800-465-1212.”We will be ready for this storm and whatever it brings,” said Christopher E. Root, National Grid senior vice president of Electricity Operations.Root said the company has brought in extra crews and pre-staged community leaders throughout the region to reassure them that they are taking all the actions necessary to respond quickly and safely to the storm.In anticipation of the storm, the Lynn Department of Public Works issued a snow emergency/parking ban on Tuesday at 11 p.m., and delayed trash pickup one day starting today for the rest of the week.Lynn Superintendent of Schools Dr. Catherine Latham announced Tuesday afternoon that all city schools would be closed today due to the impending storm. The decision was made in conjunction with Mayor Judith Flanagan Kennedy. All Catholic schools in the city have also been closed.City officials advised residents to park their vehicles in schoolyards and the MBTA garage on Market Street to avoid being towed from the streets. Vehicles however need to be removed from the schools tonight to prepare for school on Thursday.The city of Revere, which also closed its schools on Tuesday, instituted its own parking ban at 10 p.m. Tuesday, along with Peabody and Nahant at midnight. Swampscott issued its 10 p.m. ban Tuesday afternoon.The towns of Saugus and Swampscott and the city of Peabody also closed down school for Wednesday.(Karen Chretien contributed to this report.)