COASTAL HAZARD MESSAGE
NATIONAL WEATHER SERVICE PORTLAND OR
433 AM PST SUN DEC 13 2020

NORTH OREGON COAST-SOUTH WASHINGTON COAST-
433 AM PST SUN DEC 13 2020

…COASTAL FLOOD ADVISORY REMAINS IN EFFECT FROM 9 AM THIS
MORNING TO 1 PM PST THIS AFTERNOON…
…HIGH SURF ADVISORY REMAINS IN EFFECT FROM NOON TODAY TO 6 AM
PST MONDAY…

* WHAT…MINOR TIDAL OVERFLOW FLOODING IS ANTICIPATED AT HIGH
TIDE. LARGE WAVES AND HAZARDOUS SURF CONDITIONS WITH BREAKERS UP
TO 25 FEET ARE EXPECTED.

* WHERE…SOUTH WASHINGTON AND NORTH OREGON COAST.

* WHEN…FOR THE COASTAL FLOOD ADVISORY, FROM 9 AM TO 1 PM PST
SUNDAY. FOR THE HIGH SURF ADVISORY, FROM NOON SUNDAY TO 6 AM
PST MONDAY.

* IMPACTS…MINOR FLOODING, UP TO ONE FOOT ABOVE GROUND LEVEL,
DURING HIGH TIDES IS EXPECTED IN THE LOW LYING AREAS NEAR
BAYS, SLOUGHS, AND THE LOWER REACHES OF THE COASTAL RIVERS.
DESTRUCTIVE WAVES MAY WASH OVER BEACHES, JETTIES, AND OTHER
STRUCTURES UNEXPECTEDLY. PEOPLE CAN BE SWEPT OFF ROCKS AND
JETTIES AND DROWN WHILE OBSERVING HIGH SURF. MINOR BEACH
EROSION MAY DAMAGE COASTAL PROPERTIES AND BUILDINGS. HIGHER
THAN NORMAL WATER RUN-UP IS EXPECTED ON BEACHES AND LOW-LYING
SHORELINE.

* ADDITIONAL DETAILS…MINOR TIDAL OVERFLOW FLOODING IS MOST
LIKELY TO IMPACT HIGHWAY 101 IN RAYMOND, FRASER ROAD IN
TILLAMOOK, AND THE RUNWAY AT THE PACIFIC CITY AIRPORT AROUND
HIGH TIDE MIDDAY SUNDAY. UNPREDICTABLE SNEAKER WAVES WILL ALSO
RUN FAR UP ONTO THE BEACHES, LIFTING OR ROLLING LARGE HEAVY
WATER SOAKED LOGS WHICH CAN LEAD TO SERIOUS INJURY OR DEATH.

PRECAUTIONARY/PREPAREDNESS ACTIONS…

A COASTAL FLOOD ADVISORY MEANS THAT TIDAL OVERFLOW FLOODING IS
EXPECTED. COASTAL RESIDENTS IN THE WARNED AREA SHOULD BE ALERT
FOR RISING WATER, AND TAKE APPROPRIATE ACTION TO PROTECT LIFE AND
PROPERTY.

A HIGH SURF ADVISORY MEANS THAT HIGH SURF WILL AFFECT BEACHES,
PRODUCING RIP CURRENTS, SNEAKER WAVES AND BEACH EROSION. STAY
WELL BACK FROM THE WATER’S EDGE AND BE ALERT FOR EXCEPTIONALLY
HIGH WAVES.

KEEP AWAY FROM LARGE LOGS ON THE BEACH. WATER RUNNING UP ON THE
BEACH CAN EASILY LIFT OR ROLL LOGS WHICH CAN INJURE OR KILL
SOMEONE CAUGHT IN THEIR PATH.