Projected snowfall totals for the winter storm expected to arrive in the area late Wednesday night have been increased with up to 10 inches now possible in some spots of the Hudson Valley. A Winter Storm Warning, issued by the National Weather Service, will be in effect on Thursday for Westchester, Putnam, Rockland and Dutchess from midnight until 6 p.m., Wednesday will be marked by warmth with unseasonably high temperatures in the low-50s under partly sunny skies.