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2 products issued by NWS for:

Hazardous Weather Outlook

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
402 AM PST SUN DEC 21 2014

CAZ006-505-506-508-509-529-530-212300-
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-
402 AM PST SUN DEC 21 2014

THIS HAZARDOUS WEATHER OUTLOOK IS FOR SAN FRANCISCO BAY AREA AND
MONTEREY BAY AREA.

.DAY ONE...SUNDAY AND SUNDAY NIGHT

PERIGEAN SPRING TIDES...ALSO KNOWN AS KING TIDES...WILL OCCUR OVER
THE NEXT THREE DAYS. THE HIGHER THAN AVERAGE HIGH TIDES WILL
CAUSE MINOR COASTAL FLOODING WHILE THE THE LOWER THAN AVERAGE LOW
TIDES MAY CAUSE BOTTOMING OUT IN HARBORS AND STRONG CURRENTS IN
HARBOR ENTRANCES. SEE PRODUCT SFOCFWMTR...COASTAL HAZARD
MESSAGE...FOR MORE INFORMATION.

.DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY

SPRING TIDES WILL PEAK MONDAY MORNING BEFORE GRADUALLY DECREASING.

.SPOTTER INFORMATION STATEMENT...

WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER
CONDITIONS PER STANDARD OPERATING PROCEDURES.

$$










Coastal Flood Advisory

COASTAL HAZARD MESSAGE
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
819 AM PST SUN DEC 21 2014

...KING TIDES WILL IMPACT COASTLINE AND WATERFRONTS SUNDAY
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.

CAZ006-505-506-508-509-529-530-212300-
/O.CON.KMTR.CF.Y.0003.141221T1700Z-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-
819 AM 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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