Snow piled up in parts of the Midwest on Halloween, and Mother Nature also dished out a taste of winter for parts of the Northeast after trick-or-treating festivities wrapped up, with some Northeasterners waking up to a coating of snow on the first day of November. An Alberta clipper system, a type of storm that originates in western Canada, was accompanied by a blast of cold air more typical of early December, according to AccuWeather Senior Meteorologist Alex Sosnowski. Although the type of sy