456  
WHUS46 KSEW 312202  
CFWSEW  
 
COASTAL HAZARD MESSAGE  
NATIONAL WEATHER SERVICE SEATTLE WA  
302 PM PDT MON MAR 31 2025  
 
WAZ330-331-011100-  
/O.NEW.KSEW.CF.Y.0001.250401T0900Z-250401T1300Z/  
NORTHERN WASHINGTON COAST-GRAYS HARBOR COUNTY COAST-  
302 PM PDT MON MAR 31 2025  
 
...COASTAL FLOOD ADVISORY IN EFFECT FROM 2 AM TO 6 AM PDT  
TUESDAY...  
 
* WHAT...MINOR COASTAL FLOODING EXPECTED. INUNDATION UP TO 1.8 TO  
2.1 FEET ABOVE GROUND LEVEL IS POSSIBLE ALONG SHORELINES AND  
LOW-LYING COASTAL AREAS.  
 
* WHERE...NORTHERN WASHINGTON COAST AND GRAYS HARBOR COUNTY  
COAST ZONES.  
 
* WHEN...FROM 2 AM TO 6 AM PDT TUESDAY.  
 
* IMPACTS...MINOR COASTAL FLOODING DUE TO TIDAL OVERFLOW IS  
EXPECTED AROUND HIGH TIDE. THIS MAY LEAD TO FLOODING OF PARKING  
LOTS, PARKS, AND ROADS, WITH ONLY ISOLATED ROAD CLOSURES  
EXPECTED.  
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...  
 
IF TRAVEL IS REQUIRED, ALLOW EXTRA TIME AS SOME ROADS MAY BE  
CLOSED. DO NOT DRIVE AROUND BARRICADES OR THROUGH WATER OF  
UNKNOWN DEPTH. TAKE THE NECESSARY ACTIONS TO PROTECT FLOOD-PRONE  
PROPERTY.  
 
INUNDATION ABOVE GROUND LEVEL REFERS TO THE HEIGHT ABOVE THE MEAN  
HIGHER HIGH WATER (MHHW) LEVEL.  
 

 
 

 
 
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