WASHINGTON (AP) — A band of frigid weather was snaking up the East Coast on Sunday, promising blizzards and a foot of snow for New York City and New England, while several states made emergency declarations as the storm caused crashes on slick roads. Airlines grounded hundreds of flights Sunday along the Northeast corridor in anticipation of the storm. New York City-area airports alone canceled close to 1,000 flights. The Port Authority of New York and New Jersey said that number was expected to rise Sunday. Snow had started to fall in the area by late morning.