New York ( CNN ) -- With memories of a monster Christmas blizzard still fresh , another blast of winter weather charged across eastern states Friday , with winter advisories issued as far south as middle Georgia . A large complex winter system stretched across the Northeast Friday , making for messy commutes in cities like Philadelphia , but bringing fewer inches of accumulation than the massive storm that paralyzed much of New York less than two weeks ago . By Friday afternoon , 391 flights at New York 's three major airports had been canceled as a result of snow , according to spokesman Steve Coleman of the Port Authority of New York and New Jersey . `` Overall we 're talking less than 10 percent of the normal traffic , '' Coleman said . `` Most of these flights were canceled before the snow even really started . '' Twenty flights at Philadelphia International Airport also were canceled as the storm rolled through the region , causing minor delays at Logan International Airport in Boston , officials said . Several major airlines -- including American , United/Continental , U.S. Airways and Delta -- announced that their customers could voluntarily reschedule flights to and from snow-affected areas without penalty . Southwest Airlines expanded the option for passengers flying in and out of not just New York and Pennsylvania airports but also Washington Dulles and Baltimore/Washington airports . The National Weather Service issued winter storm warnings , watches and advisories for portions of New York , New Jersey , Connecticut , Pennsylvania , Massachusetts and Vermont for Friday . Separate alerts also were issued for parts of Kentucky , Tennessee and North Carolina . Forecasters projected between 2 and 4 inches of snow across the greater New York City area , with heavier amounts expected over eastern sections of Long Island . Snow was predicted later in the weekend for Atlanta and areas even farther south . `` I spoke to a couple of folks and they 're just worried about the cleanup work afterwards , '' said New York resident . Hoyman Leung . `` The last round , they were certainly deficient . '' Emergency workers , criticized for their slow response to the blizzard two weeks ago , will get another chance to prove themselves . Mayor Michael Bloomberg said New York has already instituted a series of changes . The heavy snow over the Christmas weekend hampered morning commuters , delayed first responders and even prevented aircraft service personnel from reaching airports where 29 international flights were stuck on the tarmac for more than three hours , officials said . Following sharp criticism of the city 's slow response , John Doherty , the chief of the sanitation department , has made management and personnel shake-ups in Brooklyn . An investigation is currently under way into whether sanitation workers intentionally delayed cleanup efforts over frustrations about demotions and citywide budget cuts . Bloomberg also announced that a handful of the city 's 1,700 snow plows will be fitted with global positioning systems in a pilot program meant to better track the vehicles . `` It gives us the ability to check on the location and progress of our snow plows , '' Bloomberg told reporters , saying that the devices will be added to some trucks in New York 's Brooklyn and one station in Queens , where many residents were left snowbound by the previous storm . The city is also deploying scout teams to transmit video images of neighborhoods back to City Hall during cleanup efforts , the mayor said .
NEW : 391 flights are canceled at New York 's three major airports . Philadelphia : A New York resident says many are ` ` worried about the construction work afterwards '' 20 flights are canceled at Philadelphia 's airport ; delays in Boston and Newark .