Small Craft Advisory 74, NWS Eureka, CA

912 
WHUS76 KEKA 251630
MWWEKA

URGENT - MARINE WEATHER MESSAGE
NATIONAL WEATHER SERVICE EUREKA CA
830 AM PST FRI DEC 25 2009

PZZ470-475-260030-
/O.EXT.KEKA.SC.Y.0074.091226T0600Z-091228T1800Z/
PT ST GEORGE TO CAPE MENDOCINO 10 TO 60 NM-
CAPE MENDOCINO TO PT ARENA 10 TO 60 NM-
830 AM PST FRI DEC 25 2009

...SMALL CRAFT ADVISORY NOW IN EFFECT FROM 10 PM THIS EVENING TO
10 AM PST MONDAY...

THE SMALL CRAFT ADVISORY IS NOW IN EFFECT FROM 10 PM THIS EVENING
TO 10 AM PST MONDAY. 

WESTERLY SWELL WILL BUILD TONIGHT AND CONTINUE TO AFFECT THE
WATERS THROUGH THE WEEKEND. THE SWELL WILL PEAK BETWEEN 15 AND
17 FEET LATE SATURDAY NIGHT THROUGH SUNDAY MORNING.

IN ADDITION...SOUTHEAST WINDS WILL RAMP UP ON SATURDAY AND
CONTINUE IN THE 20 TO 25 KT RANGE THROUGH SUNDAY MORNING.
STRONGER GUSTS TO 35 KT ARE EXPECTED AROUND CAPE MENDOCINO.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

INEXPERIENCED MARINERS...ESPECIALLY THOSE OPERATING SMALLER
VESSELS SHOULD AVOID NAVIGATING IN THESE CONDITIONS.

&&

$$

PZZ450-455-260030-
/O.EXT.KEKA.SC.Y.0074.091226T1000Z-091228T1800Z/
PT ST GEORGE TO CAPE MENDOCINO OUT 10 NM-
CAPE MENDOCINO TO PT ARENA OUT 10 NM-
830 AM PST FRI DEC 25 2009

...SMALL CRAFT ADVISORY NOW IN EFFECT FROM 2 AM SATURDAY TO 10 AM
PST MONDAY...

THE SMALL CRAFT ADVISORY IS NOW IN EFFECT FROM 2 AM SATURDAY TO
10 AM PST MONDAY. 

WESTERLY SWELL WILL BUILD LATE TONIGHT AND CONTINUE TO AFFECT 
THE NEAR SHORE WATERS THROUGH THE WEEKEND. SWELL HEIGHTS WILL
PEAK BETWEEN 15 AND 17 FEET LATE SATURDAY NIGHT THROUGH SUNDAY
MORNING. MARINERS ARE URGED TO USE EXTRA CAUTION...ESPECIALLY
AROUND HARBOR ENTRANCES...WHERE BREAKERS MAY REACH 18 TO 20 FEET.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

INEXPERIENCED MARINERS...ESPECIALLY THOSE OPERATING SMALLER
VESSELS SHOULD AVOID NAVIGATING IN THESE CONDITIONS.

&&

$$

374 
WHUS76 KEKA 252220
MWWEKA

URGENT - MARINE WEATHER MESSAGE
NATIONAL WEATHER SERVICE EUREKA CA
220 PM PST FRI DEC 25 2009

PZZ470-261230-
/O.CAN.KEKA.SC.Y.0074.091226T0600Z-091228T1800Z/
/O.NEW.KEKA.SW.Y.0071.091226T0600Z-091228T2200Z/
/O.NEW.KEKA.SI.Y.0075.091226T2100Z-091227T1800Z/
PT ST GEORGE TO CAPE MENDOCINO 10 TO 60 NM-
220 PM PST FRI DEC 25 2009

...SMALL CRAFT ADVISORY FOR HAZARDOUS SEAS IN EFFECT FROM 10 PM
THIS EVENING TO 2 PM PST MONDAY...
...SMALL CRAFT ADVISORY FOR WINDS IN EFFECT FROM 1 PM SATURDAY TO
10 AM PST SUNDAY...
...SMALL CRAFT ADVISORY IS CANCELLED...

THE NATIONAL WEATHER SERVICE IN EUREKA HAS ISSUED A SMALL CRAFT
ADVISORY FOR HAZARDOUS SEAS...WHICH IS IN EFFECT FROM 10 PM THIS
EVENING TO 2 PM PST MONDAY. A SMALL CRAFT ADVISORY FOR WINDS HAS
ALSO BEEN ISSUED. THIS SMALL CRAFT ADVISORY FOR WINDS IS IN
EFFECT FROM 1 PM SATURDAY TO 10 AM PST SUNDAY. THE SMALL CRAFT
ADVISORY HAS BEEN CANCELLED. 

WESTERLY SWELL WILL BUILD TONIGHT AND CONTINUE TO AFFECT THE
WATERS THROUGH THE WEEKEND. THE SWELL WILL PEAK BETWEEN 14 AND
16 FEET SATURDAY NIGHT THROUGH EARLY SUNDAY MORNING.

IN ADDITION...SOUTHEAST WINDS WILL RAMP UP ON SATURDAY AND REACH 
30 KT BY LATE AFTERNOON...STRONGEST AROUND CAPE MENDOCINO. A FEW 
HIGHER GUSTS TO 35 KT ARE POSSIBLE AROUND CAPE MENDOCINO IN THE
EVENING ON SATURDAY.

&&

PRECAUTIONARY/PREPAREDNESS ACTIONS...

INEXPERIENCED MARINERS...ESPECIALLY THOSE OPERATING SMALLER
VESSELS SHOULD AVOID NAVIGATING IN THESE CONDITIONS.

&&


$$

PZZ475-261230-
/O.CAN.KEKA.SC.Y.0074.091226T0600Z-091228T1800Z/
/O.NEW.KEKA.SW.Y.0071.091226T0600Z-091228T2200Z/
/O.NEW.KEKA.SI.Y.0075.091226T1800Z-091227T1200Z/
CAPE MENDOCINO TO PT ARENA 10 TO 60 NM-
220 PM PST FRI DEC 25 2009

...SMALL CRAFT ADVISORY FOR HAZARDOUS SEAS IN EFFECT FROM 10 PM
THIS EVENING TO 2 PM PST MONDAY...
...SMALL CRAFT ADVISORY FOR WINDS IN EFFECT FROM 10 AM SATURDAY
TO 4 AM PST SUNDAY...
...SMALL CRAFT ADVISORY IS CANCELLED...

THE NATIONAL WEATHER SERVICE IN EUREKA HAS ISSUED A SMALL CRAFT
ADVISORY FOR HAZARDOUS SEAS...WHICH IS IN EFFECT FROM 10 PM THIS
EVENING TO 2 PM PST MONDAY. A SMALL CRAFT ADVISORY FOR WINDS HAS
ALSO BEEN ISSUED. THIS SMALL CRAFT ADVISORY FOR WINDS IS IN
EFFECT FROM 10 AM SATURDAY TO 4 AM PST SUNDAY. THE SMALL CRAFT
ADVISORY HAS BEEN CANCELLED. 

WESTERLY SWELL WILL BUILD TONIGHT AND CONTINUE TO AFFECT THE
WATERS THROUGH THE WEEKEND. THE SWELL WILL PEAK BETWEEN 14 AND
16 FEET LATE SATURDAY NIGHT THROUGH EARLY SUNDAY MORNING.

IN ADDITION...SOUTHEAST WINDS WILL RAMP UP ON SATURDAY AND REACH 
20 TO 30 KT IN THE AFTERNOON...STRONGEST AROUND CAPE MENDOCINO.
A FEW HIGHER GUSTS TO AROUND 35 KT ARE POSSIBLE AROUND CAPE
MENDOCINO IN THE EVENING ON SATURDAY.

&&

PRECAUTIONARY/PREPAREDNESS ACTIONS...

INEXPERIENCED MARINERS...ESPECIALLY THOSE OPERATING SMALLER
VESSELS SHOULD AVOID NAVIGATING IN THESE CONDITIONS.

&&



$$

PZZ450-455-261230-
/O.CAN.KEKA.SC.Y.0074.091226T1000Z-091228T1800Z/
/O.NEW.KEKA.SW.Y.0071.091226T1000Z-091228T2200Z/
PT ST GEORGE TO CAPE MENDOCINO OUT 10 NM-
CAPE MENDOCINO TO PT ARENA OUT 10 NM-
220 PM PST FRI DEC 25 2009

...SMALL CRAFT ADVISORY FOR HAZARDOUS SEAS IN EFFECT FROM 2 AM
SATURDAY TO 2 PM PST MONDAY...
...SMALL CRAFT ADVISORY IS CANCELLED...

THE NATIONAL WEATHER SERVICE IN EUREKA HAS ISSUED A SMALL CRAFT
ADVISORY FOR HAZARDOUS SEAS...WHICH IS IN EFFECT FROM 2 AM
SATURDAY TO 2 PM PST MONDAY. THE SMALL CRAFT ADVISORY HAS BEEN
CANCELLED. 

WESTERLY SWELL WILL BUILD TONIGHT AND CONTINUE TO AFFECT THE
WATERS THROUGH THE WEEKEND. THE SWELL WILL PEAK BETWEEN 14 AND
16 FEET SATURDAY NIGHT THROUGH EARLY SUNDAY MORNING. MARINERS ARE
URGED TO USE EXTRA CAUTION...ESPECIALLY AROUND HARBOR
ENTRANCES...WHERE BREAKERS MAY REACH 20 FEET.

IN ADDITION...SOUTHEAST WINDS WILL RAMP UP LATE IN THE DAY ON
SATURDAY AND REACH 30 KT AROUND CAPE MENDOCINO. HIGHER GUSTS
TO AROUND 35 KT ARE POSSIBLE AROUND CAPE MENDOCINO IN THE
EVENING ON SATURDAY.

&&

PRECAUTIONARY/PREPAREDNESS ACTIONS...

INEXPERIENCED MARINERS AND BOATERS SHOULD AVOID NAVIGATING
IN THESE CONDITIONS.

&&


$$

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE EUREKA CA
214 PM PST THU DEC 24 2009

.SYNOPSIS...FAIR WEATHER IS EXPECTED FOR CHRISTMAS DAY WITH ONLY
PATCHY FOG EXPECTED IN THE MORNING. THE NEXT CHANCE FOR RAIN
ARRIVES SATURDAY AFTERNOON AND LASTS THROUGH THE WEEKEND.

&&

.DISCUSSION...PRECIP CHANCES AND RESULTANT QPF IS THE BIGGEST
CHALLENGE FOR THE WEEKEND FCST AS MODELS ARE STRUGGLING WITH THE
EVOLUTION OF A STORM IN THE EASTERN PACIFIC.

A DIRTY RIDGE IS CURRENTLY CENTERED JUST OFFSHORE AND WILL SLOWLY
PUSH EAST ON CHRISTMAS DAY. A FEW HIGH CLOUDS WILL STREAM
OVERHEAD...OTHERWISE MOST OF THE AREA WILL BE CLOUD FREE. THE
EXCEPTION WILL BE ALONG THE IMMEDIATE COAST AND VALLEY LOCATIONS
WHERE STRATUS AND FOG IS EXPECTED TO DEVELOP TONIGHT UNDER A LIGHT
SOUTHERLY FLOW REGIME.

FOCUS SHIFTS TO A LOW SOUTH OF THE ALASKA PENINSULA AND ITS
ASSOCIATED ELONGATED TROUGH AXIS AS IT SHIFTS EAST. THE HIGH
AMPLITUDE RIDGE THAT SHIFTS INTO THE INTER-MOUNTAIN WEST WILL PLAY
HAVOC WITH THIS TROUGH CAUSING THE ENERGY TO SPLIT ON SAT. ONE
PIECE OF ENERGY IS FCST BY ALL THE MODELS TO PIVOT FROM SW TO NE
THROUGH NW CA LATE SAT. AN ASSOCIATED SFC LOW AND WARM FRONT IS
EXPECTED TO LIFT ACROSS THE AREA SPREADING LIGHT SHOWERS INLAND BY
AFTERNOON OR EVENING. THIS WARM ADVECTION RAIN BAND SHOULD LIFT NE
AND THROUGH OUR AREA INTO SUN MORNING. BY THIS TIME...MOST MODELS
DROP THE MAIN UPPER LOW SOUTH OFF SOCAL WHILE THE ECMWF (AND 18Z
NAM) TRACKS A PIECE OF THIS LOW ACROSS NRN CA. THIS SCENARIO WOULD
PROVIDE FOCUS FOR MORE WIDESPREAD (LIGHT) PRECIP THROUGH SUN
NIGHT. WE WILL ACCOUNT FOR THIS UNCERTAINTY WITH POPS ABOVE CLIMO
THROUGH THE WEEKEND...BUT NOT QUITE READY TO BITE OFF ON A WASHOUT
FOR THE SECOND HALF OF THE WEEKEND.

RIDGING IS FCST TO POKE UP BEHIND THE DEPARTING LOW FOR EARLY NEXT
WEEK. THE STORM TRACK LOOKS LIKE IT WILL REMAIN TO OUR NORTH...BUT
OCCASIONAL STORMS TRACKING ACROSS THE PACNW MAY DRAG DECAYING COLD
FRONTS ACROSS NRN CA. TIMING IS ABOUT IMPOSSIBLE WITH THESE
FEATURES...SO WE WILL STICK NEAR CLIMO POPS DUE TO UNCERTAINTY. JCA

&&

.AVIATION...CIRRUS DIRTY RIDGE CLOUDS CONTINUE STREAMING ACROSS
THE NORTHWEST CALIFORNIA TAF SITES TODAY. THE REGION WILL REMAIN
UNDER PREVAILING VFR CONDITIONS EXCEPT FOR A FEW MVFR HAZY SPOTS
NEAR THE COAST THROUGH AFTERNOON. POCKETS OF LOCAL FOG DEVELOPMENT
IS LIKELY OVERNIGHT ACROSS THE REGION. THEREFORE...EXPECT A FEW
HOURS OF MORNING MVFR-IFR CONDITIONS AT THE AIR TERMINALS. ASHFORD

&&

.MARINE...HIGH PRESSURE OVER THE REGION WILL MAINTAIN LIGHT
EAST WINDS UNDER 15 KTS THROUGH FRIDAY. SE WINDS WILL INCREASE
FRI NIGHT INTO SAT AS A WEAKENING FRONT APPROACHES THE REGION.
LOW END SMALL CRAFT ADVISORY LEVEL SPEEDS OF 20-25 KT ARE
ANTICIPATED MAINLY AROUND CAPE MENDOCINO AND ACROSS THE OUTER
WATERS FROM ABOUT 20-30NM FROM SHORE AND WESTWARD.

CONFIDENCE IS GOING UP...A MODERATE WESTERLY SWELL WILL BUILD OVER
THE WEEKEND AND MAY REACH HEIGHTS OF 15 TO 17 FEET SAT NIGHT INTO
EARLY SUNDAY MORNING. OFFSHORE BUOY #6 600NM WEST OF EUREKA HAS BEEN
SHOWING SEAS OF 18-20 FT AT 10 SECONDS. SWELL OVER THE WEEKEND WILL
HAVE LONGER PERIODS THAN 10 SECONDS. THE LONG PERIODS WILL CREATE
IDEAL CONDITIONS FOR ABOVE NORMAL SURF AND INCREASE THE CHANCE FOR
HAZARDOUS WAVES IN HARBOR ENTRANCES. BREAKERS AROUND 20 FT ARE NOT
OUT OF THE QUESTION. PER LOCALLY ESTABLISHED GUIDELINES AND CRITERIA
...WEST SWELL OF 15-17 FEET AT 17-19 SECONDS WILL GENERATE SURF
RIGHT ON THE EDGE FOR AN ADVISORY...PLUS OR MINUS 1-2 FT EITHER
SIDE. THUS...FOR NOW WILL HOLD OFF ON ISSUING AN ADVISORY OR
SPECIALIZED STATEMENT UNTIL LONGER PERIOD WAVES REGISTER AT BUOY #6.
DJB

&&

.EKA WATCHES/WARNINGS/ADVISORIES...NONE.

&&

VISIT US AT HTTP://WWW.WEATHER.GOV/EUREKA

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE EUREKA CA
346 AM PST THU DEC 24 2009

CAZ001>004-076-251200-
REDWOOD COAST-MENDOCINO COAST-NORTH COAST INTERIOR-
UPPER TRINITY RIVER-MENDOCINO INTERIOR-
346 AM PST THU DEC 24 2009

THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTHWEST CALIFORNIA.

.DAY ONE...TODAY AND TONIGHT.

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY.

A SERIES OF STORM SYSTEMS WILL BRING RAIN AND HIGHER ELEVATION SNOW
TO THE REGION SATURDAY INTO WEDNESDAY.

.SPOTTER INFORMATION STATEMENT...
SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME.