Coastal Flood Advisory issued August 17 at 7:52PM EDT until August 18 at 7:00AM EDT by NWS

...COASTAL FLOOD ADVISORY IN EFFECT FROM 3 AM TO 7 AM EDT FRIDAY... THE NATIONAL WEATHER SERVICE IN BALTIMORE MD/WASHINGTON DC HAS ISSUED A COASTAL FLOOD ADVISORY, WHICH IS IN EFFECT FROM 3 AM TO 7 AM EDT FRIDAY. * LOCATION...DISTRICT OF COLUMBIA.

from Current Watches, Warnings and Advisories for the United States Issued by the National Weather Service http://ift.tt/2x8R5kE