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Coastal Flood Advisory

COASTAL HAZARD MESSAGE
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
204 PM PST SUN DEC 21 2014

...KING TIDES WILL IMPACT COASTLINE AND WATERFRONTS THROUGH
TUESDAY...

.KING TIDE WILL BEGIN TO IMPACT THE REGION TODAY AND LAST THROUGH
TUESDAY. THESE HIGH SEASONAL TIDES OCCUR WHEN THE EARTH...MOON
AND SUN ARE IN ALIGNMENT AND IN CLOSE PROXIMITY TO ONE ANOTHER
WHICH RESULTS IN MAXIMUM GRAVITATION FORCE ON TIDAL CYCLES.
EXPECT HIGHER HIGH TIDES AND LOWER LOW TIDES AS A RESULT OF THIS
PHENOMENON EACH WITH THEIR OWN SET OF UNIQUE IMPACTS. FOR HIGHER
HIGH TIDES...LOW LYING AREAS TYPICALLY FLOODED DURING HIGH TIDES
WILL BE FURTHER SUBMERGED AND COASTAL AREAS TYPICALLY NOT
IMPACTED MAY BECOME INUNDATED BY SEAWATER. FOR LOWER LOW TIDES...
BOAT KEELS MAY TOUCH HARBOR BOTTOM...STRONG RIP CURRENTS MAY
OCCUR ON COASTAL BEACHES...AND STRONG CURRENTS AND BREAKING WAVES
IN HARBOR ENTRANCES.

CAZ006-505-506-508-509-529-530-221200-
/O.CON.KMTR.CF.Y.0003.000000T0000Z-141223T2300Z/
SAN FRANCISCO-
COASTAL NORTH BAY...INCLUDING POINT REYES NATIONAL SEASHORE-
NORTH BAY INTERIOR VALLEYS-SAN FRANCISCO BAY SHORELINE-
SAN FRANCISCO PENINSULA COAST-NORTHERN MONTEREY BAY-
SOUTHERN MONTEREY BAY AND BIG SUR COAST-
204 PM PST SUN DEC 21 2014

...COASTAL FLOOD ADVISORY REMAINS IN EFFECT UNTIL 3 PM PST
TUESDAY...

* TIMING...GENERALLY SPEAKING...EXTREME HIGH TIDES ARE EXPECTED
  TO OCCUR DURING THE MID TO LATE MORNING HOURS OF DECEMBER
  21ST...22ND AND 23RD. EXTREME LOW TIDE WILL OCCUR DURING THE
  LATE AFTERNOON TO LATE EVENING HOURS. THE EXACT TIMING OF
  TIDES IS LOCATION DEPENDENT SO PLEASE VISIT
  TIDESANDCURRENTS.NOAA.GOV/PORTS/...FOR MORE SPECIFIC TIDAL
  INFORMATION.

* LOCATIONS...LOW LYING AREAS ALONG THE IMMEDIATE COAST AND BAY
  FRONT INCLUDING MARSHES AND SLOUGHS. THESE LOCATIONS MAY
  INCLUDE PARKING LOTS...COASTAL TRAILS...SIDEWALKS...
  UNDERPASSES AND ROADWAYS.

* IMPACTS...SEA WATER ON ROADWAYS...PARKING LOTS...TRAILS AND
  SIDEWALKS. PEOPLE VISITING BEACHES MAY LOSE ENTRY AND EXIT TO
  COVES AND NARROW BEACHES.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A COASTAL FLOOD ADVISORY INDICATES THAT ONSHORE WINDS AND TIDES
WILL COMBINE TO GENERATE FLOODING OF LOW AREAS ALONG THE SHORE.
DO NOT LEAVE YOUR VEHICLE IN LOW LYING PARKING LOTS NEAR THE
COAST OR BAY FRONT. DO NOT TRAVEL THROUGH FLOODED ROADWAYS. IF
VISITING THE COAST AVOID NARROW BEACHES AND COVES.

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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