Another Snowbomb is headed our way, timed to white-out another Washington weekend: URGENT – WINTER WEATHER MESSAGE NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC 245 PM EST WED FEB 3 2010 …WINTER STORM WATCH IN EFFECT FROM FRIDAY MORNING THROUGH SATURDAY EVENING… THE NATIONAL WEATHER SERVICE IN STERLING VIRGINIA HAS ISSUED A WINTER STORM WATCH…WHICH IS IN EFFECT FROM FRIDAY MORNING THROUGH SATURDAY EVENING. * PRECIPITATION TYPE…SNOW.