Marine Interpretation Message
Issued by NWS

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AGPN40 KWNM 011405
MIMPAC

MARINE WEATHER DISCUSSION FOR N PACIFIC OCEAN
NWS OCEAN PREDICTION CENTER WASHINGTON DC
705 AM PDT FRI AUG 1 2014

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

NO CHANGES ARE PLANNED FOR THE MORNING UPDATE. THE 06Z GFS
INDICATED NO MAJOR DIFFERENCES COMPARED TO THE PREVIOUS 00Z GFS.
AN ASCAT PASS FROM 06Z INDICATED THAT THE STRONGEST WINDS IN THE
25 TO 30 KT RANGE OVER THE INNER PORTION OF THE N CA OFFSHORE
WATERS EXTENDING INTO THE ADJACENT COASTAL WATERS. THE 12Z SEA
STATE ANALYSIS INDICATED THAT OBSERVED SEAS WERE WITHIN A FT OF
THE WW3 FCST VALUES.

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

HIGH PRES RDG RMNS TO THE W OF THE NRN AND CNTRL AREAS OF THE
OFFSHR WTRS THRU TUE NGT WITH WEAKENING OF THE RDG ACRS THE WA/OR
WTRS SUN NGT INTO MON WITH THE APPROACH OF A WK CD FNT FM THE NW.
A COASTAL TROF ALG THE NRN AND CNTRL AREAS OF CA IS STRENGTHENING
THIS MRNG WITH A 06Z SHIP OBS NR 40N/126W WITH 30 KT OVR THE ERN
AREAS OF NRN CA WHICH AGREES WELL WITH GFS 30M BL WINDS. MDLS RMN
CONSISTENT WITH COASTAL TROF CONTG TO STRENGTHEN THRU SUN NGT ALG
THE OR/NRN AND CNTRL AREAS OF CA COAST. WL CONT TO USE 30M GFS
WINDS THRU SUN NGT...THEN FAVOR THE ECMWF WITH THE CD FNT THAT
CROSSES INTO THE WA/OR LATE MON THRU TUE. THEREAFT LATER ON TUE
THE ECMWF WKNS THE RDG AND ITS AFFECTS ON THE OFFSHR WTRS. BY TUE
NGT ECMWF HAS WITH A WK SFC LOW FORMING W OF THE NRN CA/OR WTRS.
OTHER MDL GUID IS STGR WITH THE HIGH PRES RDG AFFECTING THE OFFSHR
WTRS. THE UKMET TRENDS MORE TOWARDS THE ECMWF WITH SMLR WK SFC LOW
SMLR WITH ITS PSN ALTHO WITH A STGR RDG AFFECTING THE WTRS. WL
FAVOR THE GFS WITH A STGR RDG AND THEREFORE A STGR PRES GRAD OVR
THE NRN AND CNTRL AREAS OF CA IN ASSOC WITH THE COASTAL TROF.

SEAS...WWIII WV MDL GUID LOOKS OK THRU SAT WHEN COMPARED TO
ECMWF WAM MDL. THE ECMWF IS SLGTLY HIER WITH SEAS LATER TNGT INTO
SAT...AND THEN BY SUN NGT IS SVRL FT HIER THAN WWIII GUID. PLAN TO
USE THE ECMWF WAM FOR TNGT THRU TUE NGT...THEN USE THE WWIII
THEREAFT WHEN MDLS ARE SMLR.

.EXTRATROPICAL STORM SURGE GUIDANCE...NA

.WARNINGS...PRELIMINARY.

.PZ5 WASHINGTON/OREGON WATERS...
     NONE.

.PZ6 CALIFORNIA WATERS...
     NONE.

$$

.FORECASTER KOSIER/ROWLAND. OCEAN PREDICTION CENTER.


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