403 AM EST Sun Dec 29 2024 291300- Patapsco River including Baltimore Harbor-District of Columbia- Cecil-Southern Baltimore-Prince Georges-Anne Arundel- Northwest Montgomery-Central and Southeast Montgomery- Northwest Howard-Central and Southeast Howard-Southeast Harford- Fairfax-Arlington/Falls Church/Alexandria-Western Loudoun- Eastern Loudoun- Including the cities of Washington, Elkton, Baltimore, Bowie, Suitland-Silver Hill, Clinton, College Park, Greenbelt, Laurel, Camp Springs, Glen Burnie, Annapolis, Severn, South Gate, Severna Park, Arnold, Odenton, Germantown, Damascus, Bethesda, Rockville, Gaithersburg, Silver Spring, Lisbon, Columbia, Ellicott City, Aberdeen, Reston, Herndon, Annandale, Centreville, Chantilly, McLean, Franconia, Arlington, Alexandria, Falls Church, Purcellville, Leesburg, Ashburn, and Sterling 403 AM EST Sun Dec 29 2024 .NOW... Periods of patchy dense fog this morning will reduce visibility to one-quarter mile or less at times. Slow down and use caution when driving. Use your low beam headlights, and leave extra travel time and following distance.