From the National Weather Service

A Winter Storm Warning is in effect from 4:00 PM Saturday through 4:00 PM Sunday. Heavy snow expected. Some sleet and freezing rain may briefly occur across the southern Berkshires, southeast Catskills, and portions of the mid-Hudson Valley that includes Columbia County. A light glaze of ice is possible in these spots. Total snow accumulations of 10 to 20 inches. Some snow totals across the southern Green Mountains in southern Vermont may approach 2 feet. Winds will gust to 20 to 35 mph Sunday afternoon with some blowing and drifting snow.

Travel will be very difficult to impossible across the region tonight through Sunday morning with snow or ice covered roadways and very low visibility in heavy snow. Snowfall rates will be 1 to 3 inches an hour at times Saturday night into Sunday morning. The potential for blowing and drifting snow will increase Sunday afternoon into the evening with wind chills falling well below zero.

A Winter Storm Warning means significant amounts of snow, sleet and ice will make travel very hazardous or impossible.