Small Craft Advisory 23, NWS Eureka, CA

020 
WHUS76 KEKA 091706
MWWEKA

URGENT - MARINE WEATHER MESSAGE
NATIONAL WEATHER SERVICE EUREKA CA
906 AM PST SAT MAR 9 2013

...WINDS AND SEAS LOWER FOR THE WEEKEND THAN EXPECTED...

.THE PRESSURE GRADIENT OVER THE COASTAL WATERS HAS NOT TIGHTENED
AS EXPECTED. THIS IS CAUSING LIGHTER WINDS AND LOWER SEAS THAN
PREVIOUSLY FORECAST. HOWEVER...CONDITIONS WILL INCREASE IN THE
AFTERNOON DUE TO HEAT DIFFERENTIAL BETWEEN LAND AND WATER.

PZZ475-100115-
/O.CAN.KEKA.SC.Y.0022.000000T0000Z-130310T2200Z/
/O.NEW.KEKA.SC.Y.0024.130309T2300Z-130310T1700Z/
CAPE MENDOCINO TO PT ARENA 10 TO 60 NM-
906 AM PST SAT MAR 9 2013

...SMALL CRAFT ADVISORY IN EFFECT FROM 3 PM THIS AFTERNOON TO 10
AM SUNDAY...

THE NATIONAL WEATHER SERVICE IN EUREKA HAS ISSUED A SMALL CRAFT
ADVISORY...WHICH IS IN EFFECT FROM 3 PM THIS AFTERNOON TO 10 AM
SUNDAY.

* WINDS...N WINDS 15 TO 25 KT WITH GUSTS TO 30 KT AROUND CAPE
  MENDOCINO AND POINT ARENA IN THE AFTERNOON.

* SEAS...NORTHERLY STEEP SHORT PERIOD WAVES OF 7 FT AT 6 SECONDS
  AND A WEST WAVE OF 5 FT AT 14 SECONDS.

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.

&&

$$

PZZ455-091815-
/O.CAN.KEKA.SC.Y.0022.000000T0000Z-130309T1700Z/
CAPE MENDOCINO TO PT ARENA OUT 10 NM-
906 AM PST SAT MAR 9 2013

...SMALL CRAFT ADVISORY IS CANCELLED...

THE NATIONAL WEATHER SERVICE IN EUREKA HAS CANCELLED THE SMALL
CRAFT ADVISORY. 

$$

PZZ470-091815-
/O.CAN.KEKA.SC.Y.0023.130310T0000Z-130310T2200Z/
PT ST GEORGE TO CAPE MENDOCINO 10 TO 60 NM-
906 AM PST SAT MAR 9 2013

...SMALL CRAFT ADVISORY IS CANCELLED...

THE NATIONAL WEATHER SERVICE IN EUREKA HAS CANCELLED THE SMALL
CRAFT ADVISORY. 

$$


HTTP://WWW.WEATHER.GOV/EUREKA

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE EUREKA CA
1252 AM PST SAT MAR 9 2013

.UPDATE...SAT IMAGERY SHOWS MOSTLY CLEAR SKIES ACROSS CWA EARLY
THIS MORNING WITH SFC TEMPS ACROSS INTERIOR MENDO ZONE FALLINGINTO
THE MID TO UPPER 30S. SENT A QUICK UPDATE TO ISSUE FROST ADVISORY
FOR CAZ076.
&&

.SYNOPSIS...A RIDGE OF HIGH PRESSURE WILL BUILD INTO THE REGION
OVERNIGHT RESULTING IN DRY WEATHER AND WARMING TEMPS THIS WEEKEND
INTO EARLY NEXT WEEK.
&&

.PREV DISCUSSION...ISSUED AT 230 PM PST FRI MAR 8 2013...VIS
IMAGERY THIS AFTERNOON SHOWING MINIMAL CUMULUS DEVELOPMENT OVER
HIGHER TERRAIN THUS FAR (2PM). UPPER WAVE STILL LOCATED OVER
WESTERN OREGON EXPECTED TO MOVE TO THE SOUTHWEST LATER THIS
AFTERNOON AND EVENING MAY STILL TRIGGER SOME SHOWER ACTIVITY THUS
LEFT SOME CHANCE POPS UP. AS MENTIONED IN PREV DISCUSSION SHORT
TERM MODEL SOLUTIONS CONTINUE TO SUGGEST GOOD INSTABILITY FOR THE
THE REMAINDER OF TODAY ACROSS THE INTERIOR THUS KEPT THE SLIGHT
CHANCE OF THUNDERSTORMS IN THE FORECAST. BUT WONDERING IF THE
AIRMASS MAY STILL BE A BIT TO DRY. WV SHOWS A LITTLE DRY SLOT OVER
THE AREA AND PWAT FIELDS STILL A LITTLE LOW (< 0.5). HATE TO GO
AGAINST MODELS SO LEFT THE SLIGHT CHANCE IN. MODELS REMAIN IN GOOD
AGREEMENT IN UPPER RIDGE NOSING OVER THE REGION OVERNIGHT INTO
SAT. GIVEN THE RAPID HEIGHT AND THICKNESS RISE BEGINNING TONIGHT
AND THE MARGINAL NATURE OF COASTAL TEMPERATURES REACHING THE FROST
THRESHOLD HAVE OPTED NOT TO ISSUE ANOTHER ADVISORY FOR TONIGHT (OR
WARNING FOR MENDO INTERIOR). THE THE RIDGE WILL RESULT IN WARMER
AND DRIER WX ACROSS THE REGION INTO EARLY NEXT WEEK. MODELS IN
FAIR AGREEMENT WITH UPPER RIDGE FLATTENING OUT EARLY NEXT
WEEK...SO MAINTAINED TREND OF GRADUALLY INCREASING POPS ACROSS NRN
PORTIONS OF CWA NEXT WEEK.....WITH POPS APPROACHING CLIMO HEADING
INTO NEXT WEEKEND.
&&

.AVIATION...VFR WILL PERSIST THROUGH THE AFTERNOON AT ALL AIRPORTS.
CLOUDS WILL DEVELOP ONCE AGAIN OVERNIGHT AT ACV AND CEC WITH IFR
CIGS. THERE REMAINS A CHANCE OF CLOUD SEEPING INTO THE UKI AS WELL,
BUT MAY REMAIN IN THE COASTAL VALLEYS AND NOT MAKE IT TO UKI. THE
TAF WILL HINT AT CLOUDS, BUT REMAIN VFR. BFG
&&

.MARINE...WINDS HAVE COME UP AT BUOY 14 NEAR POINT ARENA INTO THE
LOW 20 KT RANGE. THIS IS A RESULT OF A TROUGH NOSING INTO NW
CALIFORNIA FROM THE DESERT SW AND HIGH PRESSURE RIDGING IN FROM THE
SOUTHWEST. THE PRESSURE GRADIENT HAS TIGHTENED ACROSS THE WATERS,
WITH THE TIGHTEST LOCATION SOUTH OF CAPE MENDOCINO. THIS DOES NOT
OMIT THE NORTHERN WATERS FROM HIGHER WINDS. THERE IS A SMALL CRAFT
ADVISORY OUT FOR THE NORTHERN OUTER WATERS AS WELL AS ALL THE
SOUTHERN WATERS. WINDS ACROSS THE NORTH ARE ONLY RUNNING AROUND 15
TO 20 KT AT BUOY 22. A MORNING ASCAT PASS INDICATED 20 KT OFFSHORE,
AND WITH THE AFTERNOON HEATING DIFFERENTIAL, WINDS HAVE LIKELY
INCREASED MORE. SEAS ARE BUILDING UNDER THE INFLUENCE OF STRONGER
WINDS THROUGH THE WATERS. EXPECT STEEP SEAS TO REMAIN THROUGH MUCH
OF SATURDAY AS ANOTHER PULSE OF WINDS OCCURS SATURDAY AFTERNOON. BY
SUNDAY AND MONDAY THE PRESSURE GRADIENT WILL WEAKEN ALLOWING FOR
CONDITIONS TO EASE. CONDITIONS ARE EXPECTED TO CONTINUE TO FALL OFF
THROUGH MID WEEK. SEAS AS LOW AS 3 TO 4 FT ARE POSSIBLE BY
WEDNESDAY. BFG

&&

.EKA WATCHES/WARNINGS/ADVISORIES...
CA...FROST ADVISORY UNTIL 9 AM PST THIS MORNING CAZ076.

NORTHWEST CALIFORNIA COASTAL WATERS...SMALL CRAFT ADVISORY UNTIL 9 AM PST THIS MORNING PZZ455-470.

     SMALL CRAFT ADVISORY UNTIL 9 AM PDT SUNDAY PZZ475.

&&

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HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE EUREKA CA
1241 AM PST SAT MAR 9 2013

CAZ001>004-100845-
REDWOOD COAST-MENDOCINO COAST-NORTH COAST INTERIOR-
UPPER TRINITY RIVER-
1241 AM PST SAT MAR 9 2013

THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTHWEST CALIFORNIA.

.DAY ONE...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.

CAZ076-100845-
MENDOCINO INTERIOR-
1241 AM PST SAT MAR 9 2013

...FROST ADVISORY IN EFFECT UNTIL 9 AM PST THIS MORNING...

THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTHWEST CALIFORNIA.

.DAY ONE...TONIGHT.

A FROST ADVISORY IS CURRENTLY IN EFFECT.

.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.