Macy’s Thanksgiving Day Parade

No snow is low, but banning balloons would really blow

By GREGORY ZELLER // Humbug! Chances are low that Long Island will experience a white Christmas in 2019, according to expert forecasters, while another elemental disappointment may scrub a big part of the national Thanksgiving tradition. With about one month to go before Santa’s snow-equipped sleigh comes screeching to a halt on regional rooftops, national forecast modeler AccuWeather is predicting no late-December snow for the Eastern Seaboard. Technically, a “white Christmas” requires at least one…