NEW YORK (AP) — Neighbors, government workers and a powerful railroad snow-clearing machine nicknamed “Darth Vader” are scrambling to dig out the northeastern United States from a brutal snow storm. But as the snow moves northward and tapers off in other areas Tuesday, forecasters warn that another storm could be right around the corner. Meteorologists are calling Monday’s storm the strongest in a decade. It dumped more than 2 feet of snow in parts of the Northeast. Thousands of flights have been canceled. By Tuesday, roads were beginning to reopen, mass transportation was coming back online and power had returned for some of the hundreds of thousands who had lost electricity.