weather.gov     
National Weather Service

Watches, Warnings & Advisories
NWS Homepage

One product issued by NWS for:

Coastal Flood Advisory

COASTAL HAZARD MESSAGE
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
915 PM PST FRI DEC 19 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.

CAZ506-508-201315-
/O.NEW.KMTR.CF.Y.0003.141221T1700Z-141223T0400Z/
NORTH BAY INTERIOR VALLEYS-SAN FRANCISCO BAY SHORELINE-
915 PM PST FRI DEC 19 2014

...COASTAL FLOOD ADVISORY IN EFFECT FROM 9 AM SUNDAY TO 8 PM PST
MONDAY...

THE SUN...MOON AND THE EARTH ARE COMING INTO PROPER ALIGNMENT TO
ENCOURAGE THE LARGEST TIDAL CYCLES OF THE SEASON WHICH IS EXPECTED
TO OCCUR OVER THE NEXT FEW DAYS. THESE EXTREME TIDES OFTEN REFEREED
TO AS KING TIDES WILL RESULT IN COASTAL FLOODING OF LOW LYING
AREAS ALONG OUR COAST LINE AND BAY FRONTS DURING PERIODS OF HIGH
TIDE. THE LOCATIONS THAT ARE TYPICALLY DRY DURING HIGH TIDE MAY
BECOME SUBMERGED DUE TO THIS EXTREME TIDAL CYCLE. DURING PERIODS
OF EXTREME LOW TIDE EXPECT TO SEE TIDE POOLS DEVELOP ALONG THE
IMMEDIATE COAST.

THE NATIONAL WEATHER SERVICE IN THE SAN FRANCISCO BAY AREA HAS
ISSUED A COASTAL FLOOD ADVISORY...WHICH IS IN EFFECT FROM 9 AM
SUNDAY TO 8 PM PST MONDAY.

* 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.

&&

$$


HTTP://WWW.WEATHER.GOV/SANFRANCISCO






U.S. Dept. of Commerce
NOAA National Weather Service
1325 East West Highway
Silver Spring, MD 20910
E-mail: w-nws.webmaster@noaa.gov
Page last modified: May 16, 2007
NATIONAL WEATHER SERVICE: for Safety, for Work, for Fun - FOR LIFE