Small Craft Advisory 98, NWS Eureka, CA

259 
WHUS76 KEKA 271720
MWWEKA

URGENT - MARINE WEATHER MESSAGE
NATIONAL WEATHER SERVICE EUREKA CA
920 AM PST SUN NOV 27 2011

...GALE CONDITIONS POSSIBLE IN THE OUTER WATERS MIDWEEK...

.A WEAK COLD FRONT WILL LIMP THROUGH THE WATERS TONIGHT WITH
SLIGHTLY INCREASE SOUTHERLY WINDS AHEAD OF THE FRONT. WINDS WILL
BECOME NW TO N BEHIND THE FRONT AND WEAKEN QUICKLY. A POST FRONTAL
WESTERLY WAVE SYSTEM WILL BUILD IN ON MONDAY CAUSING BUILDING
SEAS. AS A RIDGE BUILDS ACROSS THE PAC NW AND A BACKDOOR FRONT
DROP THROUGH NV AND ERN CAL...THE PRESSURE GRADIENT WILL TIGHTEN
ACROSS THE WATERS. THIS WILL BRING STRONG TO NEAR GALE CONDITIONS
AND POSSIBLY LOW END GALE CONDITIONS.

PZZ470-272300-
/O.CAN.KEKA.SC.Y.0098.000000T0000Z-111129T1100Z/
/O.NEW.KEKA.SC.Y.0099.111127T2300Z-111129T1100Z/
PT ST GEORGE TO CAPE MENDOCINO 10 TO 60 NM-
920 AM PST SUN NOV 27 2011

...SMALL CRAFT ADVISORY IN EFFECT FROM 3 PM THIS AFTERNOON TO
3 AM TUESDAY...

THE NATIONAL WEATHER SERVICE IN EUREKA HAS ISSUED A SMALL CRAFT
ADVISORY...WHICH IS IN EFFECT FROM 3 PM THIS AFTERNOON TO 3 AM
TUESDAY.

* WINDS: SOUTH 15 TO 20 KT WITH LOCAL GUSTS TO 25 KT...BECOMING
  NORTH AND DIMINISHING BEHIND A WEAK FRONT OVERNIGHT.

* WAVES: BUILDING TONIGHT FROM THE W 9 TO 11 FT NEAR 12 SEC. WAVES
  WILL SLOWLY SUBSIDE INTO TUESDAY MORNING.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

PZZ450-272300-
/O.NEW.KEKA.SC.Y.0099.111128T0500Z-111129T1100Z/
PT ST GEORGE TO CAPE MENDOCINO OUT 10 NM-
920 AM PST SUN NOV 27 2011

...SMALL CRAFT ADVISORY IN EFFECT FROM 9 PM THIS EVENING TO 3 AM
TUESDAY...

THE NATIONAL WEATHER SERVICE IN EUREKA HAS ISSUED A SMALL CRAFT
ADVISORY...WHICH IS IN EFFECT FROM 9 PM THIS EVENING TO 3 AM
TUESDAY.

* WINDS: S 10 TO 15 KT BECOMING N 5 TO 15 KT OVERNIGHT BEHIND A
  WEAK FRONT CROSSING THE WATERS LATE TONIGHT.

* WAVES: BUILDING OVERNIGHT FROM THE W 8 TO 10 FT AT 12 SEC. WAVES
  WILL SUBSIDE MON NIGHT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$


HTTP://WWW.WEATHER.GOV/EUREKA

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE EUREKA CA
300 PM PST SAT NOV 26 2011

.SYNOPSIS...PATCHY FOG WILL DEVELOP AGAIN TONIGHT OVER NW
CALIFORNIA. A WEAK FRONT WILL APPROACH THE REGION ON SUN AND BRING
A CHANCE OF RAIN TO HUMBOLDT AND DEL NORTE COUNTIES. FAIR WEATHER
WILL RETURN ON MON AS RIDGE DEVELOPS OVER THE COAST.

&&

.DISCUSSION...VERY FEW CHANGES WERE MADE TO THE ONGOING FORECAST
AS THE MODELS SEEM TO HAVE A HANDLE ON THE CURRENT AND NEAR TERM
PATTERNS. THE UPPER RIDGE THAT HAS BEEN OVER THE AREA WILL SHIFT
TO THE EAST OVERNIGHT AHEAD OF A LIFTING AND FILLING TROUGH
SLIPPING THROUGH THE EAST PACIFIC. FOG WILL DEVELOP AGAIN TONIGHT
DUE TO THE RIDGE OVER THE AREA, BUT IT IS NOT EXPECTED TO BE AS
DENSE AND PERSISTENT AS LAST NIGHT. FOG SHOULD CLEAR OUT A BIT
EARLIER SUN MORNING AS CLOUDS BEGIN TO FILL IN AHEAD OF A FRONT
SUN NIGHT. MODELS CONTINUE TO INDICATE THE WET PORTION OF THIS
WEAKENING FRONT WILL BE IN THE DEL NORTE AND NORTHERN HUMBOLDT
COUNTIES. DID KEEP A SLIGHT CHANCE OF RAIN IN THE FORECAST FOR
MUCH OF HUMBOLDT COUNTY INTO SUN MORNING, BUT MORE THAN LIKELY
THIS WILL NEED TO BE TAKEN OUT. THIS DISINTEGRATING FRONT APPEARS
TO HAVE ALL THE MARKINGS OF A HIGH POP/LOW QPF EVENT. ESPECIALLY
FOR DEL NORTE COUNTY. THE OVERNIGHT SHIFT MAY END UP RAISING THE
POP VALUES SUN NIGHT DURING FRONTAL PASSAGE. SINCE IT WILL BE SUCH
A WEAK FRONT, NO SIGNIFICANT COOL DOWN IS EXPECTED. INSTEAD A
RIDGE WILL QUICKLY BUILD BEHIND THE UPPER TROUGH ALLOWING FOR A
DRYING AND SLIGHT WARMING TREND.

12Z MODELS RUNS ARE INDICATING SOME KIND OF BACKDOOR FRONT TRYING
TO GET INTO THE AREA LATE TUE NIGHT AND INTO WED. THE BULK OF THE
ENERGY SEEMS TO BE FAR ENOUGH INLAND THAT NW CALIFORNIA SHOULD
AVOID RAIN FROM THIS INSIDE SLIDER. BY THU AS THIS BACKDOOR FRONT
MOVES SOUTH, MODEL FALL QUICKLY OUT OF AGREEMENT. THE ITEM THEY
REMAIN IN AGREEMENT ON IS THE LACK OF PRECIPITATION. THEY DO
INDICATE SOME KIND OF RIDGE BUILDING OVER THE REGION AGAIN LATE IN
THE WEEK WHICH COULD AGAIN BRING A DRYING AND SLIGHT WARMING
TREND, IN CONJUNCTION WITH SLIGHT OFFSHORE FLOW. OVERNIGHT LOWS
WILL BE ON THE COOL SIDE THOUGH. VALLEY INVERSIONS WILL BE LIKELY
IF THIS PATTERN PANS OUT, CAUSING MIXING PROBLEMS AT THE BASE OF
VALLEYS. MORE TO COME. BFG

&&

.AVIATION...
VFR CONDITIONS ARE WIDESPREAD ACROSS OUR FORECAST AREA THIS
AFTERNOON. KACV HAS BEEN REPORTING OCNL VSBYS DOWN TO 5SM OR
SO...THINK THIS IS SOMETHING LOCALIZED OCCURRING ALONG SOME OF THE
IMMEDIATE COASTAL AREAS AS A RESULT OF SEA SPRAY. OFFSHORE GRADIENTS
WILL BECOME MORE NEUTRAL TONIGHT AND TEND SOUTHERLY AS A FRONT
BEGINS TO APPROACH. EXPECT SOME LOW CLOUDS WITH CIGS DOWN TO 500FT
ALONG THE MENDOCINO COAST TONIGHT WHILE AREAS FURTHER NORTH AND
INLAND STAY GENERALLY CLEAR. THAT IS UNTIL FOG DEVELOPS...WHICH IS
NOT EXPECTED TO BE AS WIDESPREAD OR DENSE TONIGHT WITH A BIT MORE OF
A SOUTHERLY FLOW DEVELOPING. LOCALLY AND OCCASIONALLY DENSE FOG WILL
STILL BE POSSIBLE AT ALL OF THE TAF SITES TONIGHT...ESPECIALLY
KACV...BUT FOR NOW EXPECT AT LEAST VSBYS DROPPING INTO THE 2-4SM
RANGE PREDOMINANTLY.

&&

.MARINE...
ALLOWED THE SMALL CRAFT ADVISORIES TO EXPIRE THIS MORNING AS SWELLS
CONTINUE TO SUBSIDE...BECOME MORE WESTERLY AND SHORTEN IN PERIOD A
BIT. WILL LIKELY NEED ANOTHER SCA FOR MARGINAL CONDITIONS AS A 9-11
FT NW SWELL AT 14 SECS ARRIVES MIDDAY MONDAY AND CONTINUES INTO
TUESDAY. WINDS WILL REMAIN RELATIVELY LIGHT THROUGH THEN WHILE
SWITCHING FROM SOUTHERLY TO NORTHERLY AS A WEAK FRONT PASSES THROUGH
SUNDAY NIGHT. BEYOND THAT NORTHERLIES MAY INCREASE TO AT LEAST 20 TO
30 KTS ACROSS THE OFFSHORE WATERS AROUND WEDNESDAY. OFFSHORE FLOW
MAY RESULT IN SOME WEAKENING OF THESE NORTHERLIES ESPECIALLY ACROSS
THE INNER WATERS FOR THE SECOND HALF OF NEXT WEEK. MEANWHILE NO
OTHER SIGNIFICANT SWELL TRAINS ARE EXPECTED FOR NEXT WEEK AT THIS
TIME.

&&

.EKA WATCHES/WARNINGS/ADVISORIES...
CA...NONE.
NORTHWEST CALIFORNIA COASTAL WATERS...NONE.
&&

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HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE EUREKA CA
430 AM PST SAT NOV 26 2011

CAZ001>004-076-271330-
REDWOOD COAST-MENDOCINO COAST-NORTH COAST INTERIOR-
UPPER TRINITY RIVER-MENDOCINO INTERIOR-
430 AM PST SAT NOV 26 2011

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...SUNDAY THROUGH FRIDAY.

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

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