Today is the last day to prepare across the Northeast as the snow will begin to move in from the southwest tonight. The heaviest snow will fall on Sunday, with snow changing over to a freezing rain and sleet mix along the I-95 corridor from Washington and Baltimore up to Philadelphia and even New York City. However, 8-12 inches is still expected at these major hubs despite the chance for ice. A wide swath of 12-18 inches of snow will be possible for areas that see all snow and no mix, and this includes Boston. Get your hour-by-hour forecast and the latest snow and ice totals here…