490
WHUS46 KSEW 181539
CFWSEW
COASTAL HAZARD MESSAGE
NATIONAL WEATHER SERVICE SEATTLE WA
739 AM PST THU DEC 18 2025
WAZ001-181645-
/O.EXP.KSEW.CF.Y.0014.000000T0000Z-251218T1600Z/
SAN JUAN COUNTY-
739 AM PST THU DEC 18 2025
..COASTAL FLOOD ADVISORY WILL EXPIRE AT 8 AM PST THIS MORNING
TIDE LEVELS WILL CONTINUE TO LOWER THROUGHOUT THE MORNING TODAY.
WAZ325-182100-
/O.CON.KSEW.CF.Y.0015.251218T1700Z-251218T2100Z/
EASTERN STRAIT OF JUAN DE FUCA-
739 AM PST THU DEC 18 2025
...COASTAL FLOOD ADVISORY REMAINS IN EFFECT UNTIL 1 PM PST THIS
AFTERNOON...
* WHAT...MINOR COASTAL FLOODING EXPECTED. INUNDATION OF AROUND 1.5
TO 2 FEET ABOVE GROUND LEVEL IS POSSIBLE ALONG SHORELINES AND
LOW-LYING COASTAL AREAS.
* WHERE...EASTERN STRAIT OF JUAN DE FUCA ZONE.
* WHEN...UNTIL 1 PM PST THIS AFTERNOON.
* 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.
* ADDITIONAL DETAILS...COASTAL FLOODING WILL OCCUR IN THE HOURS
AROUND THE MORNING HIGH TIDE.
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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