Marine Interpretation Message
Issued by NWS

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000
AGPN40 KWNM 021938
MIMPAC

MARINE WEATHER DISCUSSION FOR N PACIFIC OCEAN
NWS OCEAN PREDICTION CENTER WASHINGTON DC
1238 PM PDT TUE JUN 2 2015

.FORECAST DISCUSSION: MAJOR FEATURES/WINDS/SEAS/SIGNIFICANT
.WEATHER FOR THE NORTH PACIFIC N OF 30N AND E OF 150W.

THE 18Z SFC ANALYSIS INDICTED HIGH PRES CENTERED NEAR
37N141W...WITH RIDGE AXIS EXTENDING E INTO THE N AND CENTRAL CA
WATERS. LIMITED ASCAT AND RSCAT DATA AND OBS INDICATED AN AREA OF
20 KT WINDS IN THE VCNTY OF CHANNEL ISLANDS AND ALONG CENTRALC A
COAST...OTHERWISE WINDS WERE LESS THAN 20 KT.

THE 12Z MODELS CONTINUE TO BE IN VERY GOOD AGREEMENT THROUGH THE
FCST PERIOD. THE MAIN FCST IS THE EXPECTED GALES OVER THE INNER
PORTIONS OF THE N/CENTRAL CA WATERS LATER THU INTO FRI NIGHT. THE
MODELS ALL CONTINUE TO BE ON THE SAME PAGE WITH THE ONSET OF
GALES...LIKELY LATE THU AFTERNOON OVER THE COASTAL WATERS...THEN
EXPANDING TO THE OFFSHORE WATERS THU EVENING AND NIGHT AND
PERSISTING THROUGH FRI EVENING. MODELS REMAIN CONSISTENT IN
INTENSIFYING TROUGH ALONG THE COAST LATER WED INTO FRI...THEN
WEAKENING LATE FRI NIGHT INTO SAT. OVERALL...FEEL THE GFS 10M
WINDS STILL LOOK REASONABLE...BUT DID EXPAND THE AREA OF GALES TO
INCLUDE LARGER AREA OF THE ZONES AFFECTED TO MAINTAIN CONTINUITY.
EXPECT A BRIEF LULL FRI MORNING AND AFTERNOON...WITH WINDS AGAIN
BRIEFLY REACHING GALE LATE FRI ANFTERNOON AND EVENING. THE MODELS
INDICATE A WEAK COLD FRONT APPROACHING THE WA/OR WATERS BY SUN
NIGHT...HOWEVER WINDS WILL REMAIN WELL BELOW WARNING LEVELS.

.SEAS...THE 18Z SEA STATE ANALYSIS INDICATED OBSERVED SEAS
CONTINUE TO MATCH UP WELL WITH THE MWW3/ECMWF WAM. FOR THE WAVE
GRIDS...HAVE DECIDED TO START WITH ECMWF WAM AND CONTINUE THROUGH
21Z THU AS FEEL THAT IT IS MORE REALISTIC BUILDING THE SEAS FASTER
COMPARED TO THE ENP. FROM 00Z FRI AND BEYOND...WILL USE THE ENP.

.EXTRATROPICAL STORM SURGE GUIDANCE...N/A.

.WARNINGS...PRELIMINARY.

.PZ5 WASHINGTON/OREGON WATERS...
     NONE.

.PZ6 CALIFORNIA WATERS...
.PZZ820...INNER WATERS FROM POINT ST. GEORGE TO POINT ARENA...
     GALE POSSIBLE THU NIGHT INTO FRI NIGHT.
.PZZ825...INNER WATERS FROM POINT ARENA TO PIGEON POINT...
     GALE POSSIBLE THU NIGHT.

$$

.FORECASTER KOSIER. OCEAN PREDICTION CENTER.


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