Marine Interpretation Message
Issued by NWS

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AGPN40 KWNM 060205
MIMPAC

MARINE WEATHER DISCUSSION FOR N PACIFIC OCEAN
NWS OCEAN PREDICTION CENTER WASHINGTON DC
705 PM PDT TUE MAY 5 2015

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

ATTM I DONT PLAN ON MAKING MANY CHANGES TO THE GRIDS AND
ASSOCIATED TEXT FCST...ALL OF THE GLOBAL MODELS REMAIN IN VERY
GOOD AGREEMENT THROUGHOUT THE TIME PERIOD...WILL TAKE CLOSER LOOK
AS SEAS THEY COULD BE COUPLE FT ABV GUESS.

-----------------------------------------------------------------
PREVIOUS DISCUSSION...

WILL POPULATE THE GRIDS/TEXT FCST BASED ON THE 12Z GFS/30M WINDS
INTO 12Z FRI...THEN 12Z GFS/10M WINDS ONWARDS.

BOTH ASCAT METOP-A/B OVERPASSES RETURNED GALE FORCE WINDS JUST
AFTR 18Z WITH CORE OF STGST WINDS ABT 50NM TO THE NW OF PT REYES.
AS XPCTD - FOR NOW - THESE GALES RMN CONFINED TO WITHIN THE CSTL
ZNS ONLY. THE 4KM NAM SUGGEST GALES WILL SPREAD INTO THE FAR ERN
PORTIONS OF ZN PZZ825 JUST AFTR 00Z THIS AFTN/EVE WHICH RMNS
SUPPORTED BY LTST HRRR OUTPUT AND 12Z GFS.

THIS TYPICAL SUMMER PATTERN WILL PERSIST ACRS THE EPAC FOR THE
NEXT SVRL DAYS EXTENDING THRUT THE WKEND. BUILDING EPAC HIGH PRES
WILL MOVE TO/ALNG 140W AS A STG SFC LOPRES DVLPS ACRS THE GREAT
BASIN AND THERMAL TROF INTENSIFIES ALONG THE CAL CST. RESULTANT
PRES GRAD WILL BE STG ENUF TO EASILY SUPPORT MINIMAL GALE FORCE
WINDS IN THE WATERS ADJACENT TO THE NRN CAL CSTL ZNS. FORECAST
CONFID RMNS HI. WITH FCST CONSISTENCY IN MIND WILL ALLOW GALE
HEADLINES TO EXPIRE BY 12Z FRI AS EPAC HIGH PRES BEGINS TO WKN IN
ADV OF APRCHG CDFNT.

SEAS...SIG WVHT FCST GRIDS/TEXT WL USE 12Z ENP THRUT...EXCEPT FROM
00Z THU TO 12Z FRI WILL USE 12Z ECMWF WAM GUID. OVRL THIS WONT DO
MUCH...BUT WILL ADD 1-2 FT IN THE AREAS OF FCST GALES.


.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 WED INTO THU.
     GALE POSSIBLE THU NIGHT.
.PZZ825...INNER WATERS FROM POINT ARENA TO PIGEON POINT...
     GALE TONIGHT INTO THU.
     GALE POSSIBLE THU NIGHT.
.PZZ830...INNER WATERS FROM PIGEON POINT TO POINT PIEDRAS BLANCAS...
     GALE WED INTO THU.

$$

.FORECASTER SHAW/COLLINS. OCEAN PREDICTION CENTER.



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