* WHAT. Flash flooding caused by excessive rainfall continues to be possible. * WHERE. The District of Columbia, and portions of Maryland, including the following areas, Anne Arundel, Central and Southeast Howard, Central and Southeast Montgomery, Prince Georges and Southern Baltimore, and northern Virginia, including the following areas, Arlington/Falls Church/Alexandria, Central and Southeast Prince William/Manassas/Manassas Park, and Fairfax. * WHEN. Until midnight EDT tonight. * IMPACTS. Excessive runoff may result in flooding of poor drainage and urban areas, small streams, and other low-lying and flood-prone locations. * ADDITIONAL DETAILS. - Thunderstorms through this evening could have intense rain rates exceeding 2 inches per hour. If locally repetitive or prolonged thunderstorms develop, flash flooding could occur in flood-prone urban and suburban areas. - Please visit www.weather.gov/safety/flood for flood safety and preparedness information

* WHAT. Southwest winds 10 to 15 kt with gusts up to 20 kt. * WHERE. Tidal Potomac River from Key Bridge to Cobb Island MD, and Chesapeake Bay and adjoining estuaries north of Drum Point MD. * WHEN. Until 11 PM EDT this evening. * IMPACTS. Conditions will be hazardous to small craft.

THE NATIONAL WEATHER SERVICE WILL ALLOW SEVERE THUNDERSTORM WATCH 553 TO EXPIRE AT 10 PM EDT THIS EVENING FOR THE FOLLOWING AREAS IN DELAWARE THIS ALLOWS TO EXPIRE 3 COUNTIES IN CENTRAL DELAWARE KENT IN NORTHERN DELAWARE NEW CASTLE IN SOUTHERN DELAWARE SUSSEX IN MARYLAND THIS ALLOWS TO EXPIRE 4 COUNTIES IN NORTHEAST MARYLAND CAROLINE KENT QUEEN ANNE'S TALBOT IN NEW JERSEY THIS ALLOWS TO EXPIRE 4 COUNTIES IN SOUTHERN NEW JERSEY ATLANTIC CAPE MAY CUMBERLAND SALEM THIS INCLUDES THE CITIES OF ATLANTIC CITY, CENTREVILLE, CHESTERTOWN, DENTON, DOVER, EASTON, GEORGETOWN, HAMMONTON, MILLVILLE, OCEAN CITY, PENNSVILLE, AND WILMINGTON.