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High Surf Advisory

COASTAL HAZARD MESSAGE
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
628 AM PST SAT DEC 20 2014

...LARGE SURF EXPECTED NORTH BAY COAST FRIDAY AND SATURDAY...

.LARGE NORTHWEST SWELL WILL IMPACT THE COAST OVERNIGHT THROUGH
SATURDAY AFTERNOON. THE LARGE SWELL WILL GRADUALLY DECAY SATURDAY
AFTERNOON INTO SATURDAY NIGHT. LARGE SURF COMBINED WITH
INCREASING HIGH TIDE MAY RESULT IN SOME MINOR COASTAL FLOODING
SATURDAY MORNING. LOCATIONS OF CONCERN WILL BE ALONG THE
IMMEDIATE COAST INCLUDING SLOUGHS AND COASTAL MARSHES. KING TIDE
WILL BEGIN TO OCCUR ON SUNDAY LASTING THROUGH TUESDAY. THESE HIGH
SEASONAL TIDES WILL SPREAD THE COASTAL FLOODING CONCERN INTO BAY
FRONT AREAS IN THE SAN FRANCISCO BAY AREA.

CAZ505-509-529-530-202300-
/O.CON.KMTR.SU.Y.0007.000000T0000Z-141220T2300Z/
/O.CON.KMTR.CF.Y.0002.141220T1700Z-141220T2200Z/
COASTAL NORTH BAY...INCLUDING POINT REYES NATIONAL SEASHORE-
SAN FRANCISCO PENINSULA COAST-NORTHERN MONTEREY BAY-
SOUTHERN MONTEREY BAY AND BIG SUR COAST-
628 AM PST SAT DEC 20 2014

...HIGH SURF ADVISORY REMAINS IN EFFECT UNTIL 3 PM PST THIS
AFTERNOON...
...COASTAL FLOOD ADVISORY REMAINS IN EFFECT UNTIL 2 PM PST THIS
AFTERNOON...

* COASTAL FLOODING...COASTAL FLOODING WILL BE A CONCERN ALONG
  THE IMMEDIATE COAST INCLUDING COASTAL MARSHES AND SLOUGHS.

* WAVES AND SURF...NORTHWEST SWELL OF 15 TO 18 FEET WITH A
  PERIOD OF 18 SECONDS. OCCASIONAL BREAKERS OVER 25 FEET WILL BE
  POSSIBLE.

* TIMING...FRIDAY EVENING THROUGH SATURDAY AFTERNOON.

* IMPACTS...LARGE BREAKING WAVES ALONG THE COAST WILL LIKELY
  PRODUCE HAZARDOUS CONDITIONS ON THE BEACH AND SURF ZONE...
  ESPECIALLY NORTHWEST FACING BEACHES. THERE WILL ALSO BE AN
  INCREASED LIKELIHOOD FOR DANGEROUS RIP CURRENTS AND BEACH
  EROSION.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

IT IS EXTREMELY DANGEROUS TO FISH OR OBSERVE WAVES FROM EXPOSED
COASTAL STRUCTURES OR ROCKS DURING HIGH SURF CONDITIONS. VERY
LARGE WAVES CAN SUDDENLY SWEEP ACROSS PREVIOUSLY DRY AREAS.
SWIMMING OR SURFING IN THESE WAVES MAY BE DANGEROUS FOR ANYONE.

A HIGH SURF ADVISORY MEANS THAT HIGH SURF WILL AFFECT BEACHES IN
THE ADVISORY AREA...PRODUCING RIP CURRENTS AND LOCALIZED BEACH
EROSION.

A COASTAL FLOOD ADVISORY INDICATES THAT ONSHORE WINDS AND TIDES
WILL COMBINE TO GENERATE FLOODING OF LOW AREAS ALONG THE SHORE.

&&

$$



Coastal Flood Advisory

COASTAL HAZARD MESSAGE
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
628 AM PST SAT DEC 20 2014

...LARGE SURF EXPECTED NORTH BAY COAST FRIDAY AND SATURDAY...

.LARGE NORTHWEST SWELL WILL IMPACT THE COAST OVERNIGHT THROUGH
SATURDAY AFTERNOON. THE LARGE SWELL WILL GRADUALLY DECAY SATURDAY
AFTERNOON INTO SATURDAY NIGHT. LARGE SURF COMBINED WITH
INCREASING HIGH TIDE MAY RESULT IN SOME MINOR COASTAL FLOODING
SATURDAY MORNING. LOCATIONS OF CONCERN WILL BE ALONG THE
IMMEDIATE COAST INCLUDING SLOUGHS AND COASTAL MARSHES. KING TIDE
WILL BEGIN TO OCCUR ON SUNDAY LASTING THROUGH TUESDAY. THESE HIGH
SEASONAL TIDES WILL SPREAD THE COASTAL FLOODING CONCERN INTO BAY
FRONT AREAS IN THE SAN FRANCISCO BAY AREA.

CAZ505-509-529-530-202300-
/O.CON.KMTR.SU.Y.0007.000000T0000Z-141220T2300Z/
/O.CON.KMTR.CF.Y.0002.141220T1700Z-141220T2200Z/
COASTAL NORTH BAY...INCLUDING POINT REYES NATIONAL SEASHORE-
SAN FRANCISCO PENINSULA COAST-NORTHERN MONTEREY BAY-
SOUTHERN MONTEREY BAY AND BIG SUR COAST-
628 AM PST SAT DEC 20 2014

...HIGH SURF ADVISORY REMAINS IN EFFECT UNTIL 3 PM PST THIS
AFTERNOON...
...COASTAL FLOOD ADVISORY REMAINS IN EFFECT UNTIL 2 PM PST THIS
AFTERNOON...

* COASTAL FLOODING...COASTAL FLOODING WILL BE A CONCERN ALONG
  THE IMMEDIATE COAST INCLUDING COASTAL MARSHES AND SLOUGHS.

* WAVES AND SURF...NORTHWEST SWELL OF 15 TO 18 FEET WITH A
  PERIOD OF 18 SECONDS. OCCASIONAL BREAKERS OVER 25 FEET WILL BE
  POSSIBLE.

* TIMING...FRIDAY EVENING THROUGH SATURDAY AFTERNOON.

* IMPACTS...LARGE BREAKING WAVES ALONG THE COAST WILL LIKELY
  PRODUCE HAZARDOUS CONDITIONS ON THE BEACH AND SURF ZONE...
  ESPECIALLY NORTHWEST FACING BEACHES. THERE WILL ALSO BE AN
  INCREASED LIKELIHOOD FOR DANGEROUS RIP CURRENTS AND BEACH
  EROSION.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

IT IS EXTREMELY DANGEROUS TO FISH OR OBSERVE WAVES FROM EXPOSED
COASTAL STRUCTURES OR ROCKS DURING HIGH SURF CONDITIONS. VERY
LARGE WAVES CAN SUDDENLY SWEEP ACROSS PREVIOUSLY DRY AREAS.
SWIMMING OR SURFING IN THESE WAVES MAY BE DANGEROUS FOR ANYONE.

A HIGH SURF ADVISORY MEANS THAT HIGH SURF WILL AFFECT BEACHES IN
THE ADVISORY AREA...PRODUCING RIP CURRENTS AND LOCALIZED BEACH
EROSION.

A COASTAL FLOOD ADVISORY INDICATES THAT ONSHORE WINDS AND TIDES
WILL COMBINE TO GENERATE FLOODING OF LOW AREAS ALONG THE SHORE.

&&

$$



U.S. Dept. of Commerce
NOAA National Weather Service
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Silver Spring, MD 20910
E-mail: w-nws.webmaster@noaa.gov
Page last modified: May 16, 2007
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