In the wild world of winter weather, location is everything, which New York and Massachusetts learned too well Tuesday. Small last-minute changes in the air morphed what was supposed to be crippling feet of snow into a handful of inches, leading one forecaster to apologize, the National Weather Service boss to get defensive, politicians to explain themselves and some Northeast residents wondering where the much-hyped snow went. The not-so-great blizzard of 2015 did wallop the Northeast: Long Island and Massachusetts got hammered with more than 2 feet of snow.