285  
WHUS41 KLWX 181411  
CFWLWX  
 
COASTAL HAZARD MESSAGE  
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC  
911 AM EST TUE DEC 18 2018  
 
DCZ001-181700-  
/O.CAN.KLWX.CF.W.0020.000000T0000Z-181218T1800Z/  
/O.NEW.KLWX.CF.Y.0134.181218T1411Z-181218T1700Z/  
DISTRICT OF COLUMBIA-  
911 AM EST TUE DEC 18 2018  
   
..COASTAL FLOOD ADVISORY IN EFFECT UNTIL NOON EST TODAY
 
 
...COASTAL FLOOD WARNING IS CANCELLED...  
 
THE NATIONAL WEATHER SERVICE IN BALTIMORE MD/WASHINGTON HAS  
ISSUED A COASTAL FLOOD ADVISORY, WHICH IS IN EFFECT UNTIL NOON  
EST TODAY. THE COASTAL FLOOD WARNING HAS BEEN CANCELLED.  
 
* LOCATIONS...SHORELINE IN THE DISTRICT OF COLUMBIA.  
 
* TIDAL DEPARTURE...TIDAL ANOMALIES THEMSELVES WILL BE 1 TO 1.5  
FEET ABOVE NORMAL. HOWEVER, THE MAIN SOURCE OF EXCESS WATER  
WILL BE FRESH WATER FLOWING DOWN THE POTOMAC FROM RECENT HEAVY  
RAINS, WHICH WILL OVERWHELM THE TIDAL ANOMALIES, PARTICULARLY  
AT WISCONSIN AVENUE.  
 
* TIMING...CONTINUING THROUGH MIDDAY TODAY. THE FLOOD CREST HAS  
PASSED.  
 
* IMPACTS...SHORELINE INUNDATION IS EXPECTED ALONG PORTIONS OF  
THE SEAWALL ADJACENT TO OHIO DRIVE AND THE HAINS POINT LOOP  
ROAD, AND NEAR THE TIDAL BASIN AND JEFFERSON MEMORIAL. MINOR  
SHORELINE INUNDATION UP TO ONE FOOT ABOVE GROUND IS POSSIBLE  
ELSEWHERE.  
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...  
 
A COASTAL FLOOD ADVISORY INDICATES THAT ONSHORE WINDS AND TIDES  
WILL COMBINE TO GENERATE FLOODING OF LOW AREAS ALONG THE SHORE.  
 

 
 

 
 
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