URGENT - WINTER WEATHER MESSAGENATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC315 PM EST SUN FEB 7 2010DCZ001-MDZ004>007-009>011-013-014-VAZ040-042-052>054-501-080415-/O.NEW.KLWX.WS.A.0005.100209T1900Z-100210T2100Z/DISTRICT OF COLUMBIA-FREDERICK MD-CARROLL-NORTHERN BALTIMORE-HARFORD-MONTGOMERY-HOWARD-SOUTHERN BALTIMORE-PRINCE GEORGES-ANNE ARUNDEL-RAPPAHANNOCK-LOUDOUN-PRINCE WILLIAM/MANASSAS/MANASSAS PARK-FAIRFAX-ARLINGTON/FALLS CHURCH/ALEXANDRIA-NORTHERN FAUQUIER-INCLUDING THE CITIES OF...WASHINGTON...FREDERICK...WESTMINSTER...…