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Winter Weather Advisory


URGENT - WINTER WEATHER MESSAGE
National Weather Service Sacramento CA
305 PM PDT Wed Oct 18 2017

...Early Season Snow and Gusty Winds...

.A cool weather system will bring early season snow to the
Northern Sierra late Thursday night through Friday morning. Snow
levels are expected to begin high Thursday then drop rapidly to
around 5500 feet Friday morning. There could be 3 to 6 inches of
snow along Interstate 80 above 6500 feet...impacting areas near
Donner pass. Motorists traveling over mountain passes should be
prepared for slick roads. Winds gusting to 65 mph over mountain
ridges could cause problems for high profile vehicles and when
combined with snow could bring poor visibility.

CAZ068-069-191200-
/O.NEW.KSTO.WW.Y.0018.171020T0600Z-171020T1800Z/
Western Plumas County/Lassen Park-
West Slope Northern Sierra Nevada-
305 PM PDT Wed Oct 18 2017

...WINTER WEATHER ADVISORY IN EFFECT FROM 11 PM THURSDAY TO 11 AM
PDT FRIDAY ABOVE 6500 FEET...

* WHAT...Snow expected. Plan on slippery road conditions. Strong,
  gusty winds may impact driving and visibility. Total snow
  accumulations up to 3 to 6 inches are expected above 6500 feet.

* WHERE...Western Plumas County/Lassen Park and West Slope
  Northern Sierra Nevada County.

* WHEN...11 PM Thursday to 11 AM Friday.

* ADDITIONAL DETAILS...Be prepared for reduced visibilities at
  times.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Weather Advisory for snow means periods of snow will
cause primarily travel difficulties. Be prepared for snow covered
roads and limited visibilities, and use caution while driving.
The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

$$


High Surf Advisory


COASTAL HAZARD MESSAGE
NATIONAL WEATHER SERVICE LOS ANGELES/OXNARD CA
723 PM PDT WED OCT 18 2017

CAZ034-035-191030-
/O.CAN.KLOX.BH.S.0020.171020T1300Z-171022T1600Z/
/O.NEW.KLOX.SU.Y.0018.171020T1300Z-171022T1900Z/
SAN LUIS OBISPO COUNTY CENTRAL COAST-
SANTA BARBARA COUNTY CENTRAL COAST-
723 PM PDT WED OCT 18 2017

...VERY LARGE AND DAMAGING SURF FRIDAY THROUGH SUNDAY MORNING FOR
THE CENTRAL COAST...

...HIGH SURF ADVISORY IN EFFECT FROM 6 AM FRIDAY TO NOON PDT
SUNDAY...

...BEACH HAZARDS STATEMENT IS CANCELLED...

THE NATIONAL WEATHER SERVICE IN LOS ANGELES/OXNARD HAS ISSUED A
HIGH SURF ADVISORY, WHICH IS IN EFFECT FROM 6 AM FRIDAY TO NOON
PDT SUNDAY. THE BEACH HAZARDS STATEMENT HAS BEEN CANCELLED.

* SURF...HIGH SURF 14 TO 20 FEET IS EXPECTED TO DEVELOP BY FRIDAY
  MORNING AND CONTINUE THROUGH SUNDAY MORNING ALONG NORTHWEST AND
  WEST FACING BEACHES. A STRONG STORM IN THE GULF OF ALASKA WAS
  GENERATING LARGE SWELLS WITH A LONG PERIOD. THESE LARGE SWELLS
  WILL MOVE INTO THE COASTAL WATERS NORTH OF POINT CONCEPTION
  BRINGING A SUDDEN INCREASE IN THE LARGE SURF. SURF WILL INCREASE
  FROM 10 TO 14 FEET TO 14 TO 20 FEET BY LATE FRIDAY EVENING AND
  PERSIST INTO SATURDAY MORNING. THE SURF IS EXPECTED TO DIMINISH
  SOME BY SATURDAY AFTERNOON INTO SUNDAY MORNING BUT REMAINING
  ABOVE 10 FEET THROUGH THE PERIOD.

* LOCATIONS...NORTHWEST AND WEST FACING BEACHES ACROSS THE CENTRAL
  COAST.

* IMPACTS...LARGE POWERFUL AND DAMAGING WAVES AND STRONG CURRENTS
  WILL CREATE A RISK OF OCEAN DROWNING. SNEAKER WAVES CAN SUDDENLY
  OVERRUN PREVIOUSLY DRY BEACHES AND JETTIES. FLOODING OF LOW
  LYING BEACH PARKING LOTS, HARBOR WALKWAYS, AND CAMPGROUNDS WILL
  BE POSSIBLE WITH THE HIGH SURF. A COASTAL FLOOD ADVISORY COULD
  BE ADDED BY LATER SHIFTS FOR FRIDAY NIGHT THROUGH SATURDAY
  MORNING.

* TIDES...HIGH TIDES WILL BE MODERATELY HIGH AROUND 5.7 FT AT 9:45
  AM PDT FRIDAY AND ABOUT THE SAME TIDE HEIGHT ON SATURDAY AROUND
  10:10 AM PDT.


PRECAUTIONARY/PREPAREDNESS ACTIONS...

A HIGH SURF ADVISORY MEANS THAT HIGH SURF WILL AFFECT BEACHES IN
THE ADVISORY AREA...PRODUCING LOCALIZED BEACH EROSION AND
DANGEROUS SWIMMING CONDITIONS. SWIM NEAR A LIFEGUARD. IF CAUGHT
IN A RIP CURRENT, RELAX AND FLOAT. DON`T SWIM AGAINST THE
CURRENT. IF ABLE, SWIM IN A DIRECTION FOLLOWING THE SHORELINE. IF
UNABLE TO ESCAPE, FACE THE SHORE AND CALL OR WAVE FOR HELP.

&&

$$

COASTAL HAZARD MESSAGE
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
346 PM PDT WED OCT 18 2017

...HIGH SURF EXPECTED THURSDAY NIGHT THROUGH FRIDAY...

.A LARGE NORTHWEST SWELL OF 15 TO 18 FEET WITH PERIODS OF 18 TO
20 SECONDS WILL ARRIVE THURSDAY NIGHT AND SPREAD THROUGH THE
COASTAL WATERS THROUGH FRIDAY. THIS SWELL WILL RESULT IN BREAKING
WAVES OF 13 TO 18 FEET, OCCASIONALLY UP TO 25 FEET AT FAVORED
BEACHES. THESE CONDITIONS WILL POSE A THREAT TO BEACHGOERS AND
MARINERS TRAVERSING HARBOR ENTRANCES LATE THIS WEEK.

CAZ006-505-509-529-530-191000-
/O.CON.KMTR.SU.Y.0007.171020T0100Z-171021T0100Z/
SAN FRANCISCO-
COASTAL NORTH BAY INCLUDING POINT REYES NATIONAL SEASHORE-
SAN FRANCISCO PENINSULA COAST-NORTHERN MONTEREY BAY-
SOUTHERN MONTEREY BAY AND BIG SUR COAST-
346 PM PDT WED OCT 18 2017

...HIGH SURF ADVISORY REMAINS IN EFFECT FROM 6 PM THURSDAY TO
6 PM PDT FRIDAY...

* WAVES AND SURF...BREAKING WAVES OF 13 TO 18 FEET, OCCASIONALLY
  UP TO 25 FEET ALONG WEST AND NORTHWEST FACING BEACHES.

* TIMING...BEGINNING LATE THURSDAY THROUGH FRIDAY.

* IMPACTS...LARGE BREAKING WAVES ALONG THE COAST WILL LEAD TO
  INCREASED WAVE RUN-UP ON BEACHES WITH WAVES TOPPING AND
  WASHING OVER LARGE ROCKS AND JETTIES. THESE LARGE WAVES CAN BE
  ERRATIC AND UNPREDICTABLE. USE EXTRA CAUTION NEAR THE SURF
  ZONE AS THESE LARGE WAVES WILL BE CAPABLE OF SWEEPING PEOPLE
  INTO THE FRIGID AND TURBULENT OCEAN WATER. MARINERS TRAVERSING
  THE BAR OR HARBOR ENTRANCES ARE ALSO URGED TO EXERCISE EXTREME
  CAUTION...OR STAY IN PORT UNTIL THE THREAT SUBSIDES.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$


Small Craft Advisory


URGENT - MARINE WEATHER MESSAGE
NATIONAL WEATHER SERVICE SAN FRANCISCO CA
230 PM PDT WED OCT 18 2017


PZZ565-190530-
/O.CON.KMTR.SC.Y.0236.000000T0000Z-171019T1300Z/
POINT PINOS TO POINT PIEDRAS BLANCAS TO 10 NM-
230 PM PDT WED OCT 18 2017

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 6 AM PDT
THURSDAY...

* WINDS...NORTHWEST 15 TO 25 KT.

* SEAS...4 TO 6 FEET.

* WINDS AND WAVES: SEE THE COASTAL WATERS FORECAST (CWFMTR) OR
  OUR MARINE PAGE AT HTTP://WEATHER.GOV/SANFRANCISCO/MARINE.PHP
  FOR MORE DETAILS.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A SMALL CRAFT ADVISORY MEANS THAT WIND SPEEDS OF 21 TO 33 KNOTS
AND/OR STEEP WAVES ARE EXPECTED TO PRODUCE HAZARDOUS WAVE
CONDITIONS TO SMALL CRAFT. INEXPERIENCED MARINERS...ESPECIALLY
THOSE OPERATING SMALLER VESSELS SHOULD AVOID NAVIGATING IN THESE
CONDITIONS.

&&

$$

URGENT - MARINE WEATHER MESSAGE
NATIONAL WEATHER SERVICE LOS ANGELES/OXNARD CA
218 PM PDT WED OCT 18 2017

PZZ673-190530-
/O.CON.KLOX.SC.Y.0147.000000T0000Z-171019T1000Z/
WATERS FROM PT. SAL TO SANTA CRUZ ISLAND CA AND WESTWARD 60 NM
INCLUDING SAN MIGUEL AND SANTA ROSA ISLANDS-
218 PM PDT WED OCT 18 2017

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 3 AM PDT
THURSDAY...

SEE THE COASTAL WATERS FORECAST (CWFLOX) FOR MORE DETAILS.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A SMALL CRAFT ADVISORY MEANS THAT HAZARDOUS SEA CONDITIONS WILL
EXIST FOR SMALL CRAFT. INEXPERIENCED MARINERS...ESPECIALLY THOSE
OPERATING SMALLER VESSELS SHOULD AVOID NAVIGATING IN THESE
CONDITIONS.

&&

$$


FOR MORE INFORMATION FROM NOAA/S NATIONAL WEATHER SERVICE VISIT...
HTTP://WEATHER.GOV/LOSANGELES

URGENT - MARINE WEATHER MESSAGE
NATIONAL WEATHER SERVICE LOS ANGELES/OXNARD CA
218 PM PDT WED OCT 18 2017

PZZ670-190530-
/O.CON.KLOX.SC.Y.0147.000000T0000Z-171019T1000Z/
POINT PIEDRAS BLANCAS TO POINT SAL FROM 10 TO 60 NM-
218 PM PDT WED OCT 18 2017

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 3 AM PDT
THURSDAY...

SEE THE COASTAL WATERS FORECAST (CWFLOX) FOR MORE DETAILS.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A SMALL CRAFT ADVISORY MEANS THAT HAZARDOUS SEA CONDITIONS WILL
EXIST FOR SMALL CRAFT. INEXPERIENCED MARINERS...ESPECIALLY THOSE
OPERATING SMALLER VESSELS SHOULD AVOID NAVIGATING IN THESE
CONDITIONS.

&&

$$


Marine Weather Statement


MARINE WEATHER STATEMENT
NATIONAL WEATHER SERVICE LOS ANGELES/OXNARD CA
850 PM PDT TUE OCT 17 2017

PZZ645-650-670-673-190400-
POINT PIEDRAS BLANCAS TO POINT SAL WESTWARD OUT TO 10 NM-
EAST SANTA BARBARA CHANNEL FROM PT. CONCEPTION TO PT. MUGU CA
INCLUDING SANTA CRUZ ISLAND-
POINT PIEDRAS BLANCAS TO POINT SAL FROM 10 TO 60 NM-
WATERS FROM PT. SAL TO SANTA CRUZ ISLAND CA AND WESTWARD 60 NM
INCLUDING SAN MIGUEL AND SANTA ROSA ISLANDS-
850 PM PDT TUE OCT 17 2017

...LARGE NORTHWEST SWELL POSSIBLE FRIDAY AND SATURDAY IMPACTING
MORRO BAY HARBOR...

A DEVELOPING LARGE NORTHWESTERLY SWELL COULD PRODUCE BREAKING
WAVES AT THE MORRO BAY HARBOR ENTRANCE BETWEEN FRIDAY AND
SATURDAY.

IF THE LARGE SWELL DEVELOPS AS MODELED...THESE CONDITIONS COULD
POTENTIALLY CAPSIZE VESSELS OF VARIOUS SIZES RESULTING IN SERIOUS
INJURY OR DEATH...EVEN TO THE MOST EXPERIENCED MARINERS.

MARINERS ARE URGED TO STAY ADVISED OF THIS IMPENDING DANGEROUS
SITUATION. FOR MORE INFORMATION...CONTACT THE LOCAL HARBOR PATROL
OR COAST GUARD STATION...AND CONTINUE TO MONITOR NOAA WEATHER
RADIO FOR THE LATEST WEATHER INFORMATION.

$$

KAPLAN/SIRARD

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: June 2, 2009
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