Marine Interpretation Message
Issued by NWS

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000
AGPN40 KWNM 210926
MIMPAC

MARINE WEATHER DISCUSSION FOR N PACIFIC OCEAN
NWS OCEAN PREDICTION CENTER WASHINGTON DC
226 AM PDT SUN SEP 21 2014

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

THE GLOBAL MODELS ARE ALL IN PRETTY GOOD AGREEMENT OVR THE NEXT 5
DAYS...WITH SOME MINOR DIFFERENCES...MAINLY DEALING WITH THE
TIMING OF FRONTAL PASSAGES ACROSS THE OFFSHORE WATERS. A WEAK COLD
FRONT WILL CROSS THE REGION OVR NEXT 24-36 HRS AND WILL BE
FOLLOWED BY A BUILDING AREA OF HIGH PRES. THE RIDGE WILL BE SHORT
LIVED HOWEVER AS A STRONG UPSTREAM SYSTEM APPROACHES THE PZ5
WATERS ON DAYS 2-3. THE GFS IS SLIGHTLY FASTER THAN ECMWF/UKMET
WITH BRINGING THE FRONT OVR THE WATERS. IN ORDER TO KEEP SOME
CONTINUITY I PLAN ON POP THE WIND GRIDS WITH THE ECMWF BETWEEN 12Z
TUE AND 12Z THU...OTHERWISE THE GFS IS FINE. WILL ENHANCE WINDS IN
VCNTY OF PT CONCEPTION LATER IN THE PERIOD BY USING THE 30M GFS
FOR THE INNER CA ZONES OF SRN CA. THE STRONGES CONDITIONS WILL BE
FELT ACROSS PZ5 WATERS AS THE DEEP LOW MOVES CLOSSER TO THE REGION
AND GALES ARE LIKELY IN THE S-SW FLOW. A LARGE SWELL WILL ALSO BE
IN THE CARDS AS LOW NEARS WATERS AND EVEN AS IT LIFTS N OF THE
REGION. ONCE THE SYSTEM MOVES N OF THE PZ5 WATERS EXPECT THE SWELL
TO SLOWLY DIMINISH. LATER THU INTO FRI THE GRADIENT ALONG PT
CONCEPTION WILL TIGHTEN CAUSING AN INCREASE IN WINDS. ATTM I PLAN
ON KEEPING MAX WINDS TO 30 KT OVR THAT REGION. AS FAR AS THE SEAS
GO...THE WW3 AND ECMWF WAVE GUID BOTH LOOK REASONABLE AND WILL
MATCH THE WAVE GUID WITH COORESPONDING MODEL WHEN POP THE GRIDS.

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

.WARNINGS...PRELIMINARY.

.PZ5 WASHINGTON/OREGON WATERS...
.PZZ900...OUTER WATERS FROM CAPE FLATTERY TO CAPE SHOALWATER...
     GALE POSSIBLE WED INTO WED NIGHT.
.PZZ905...OUTER WATERS FROM CAPE SHOALWATER TO CAPE LOOKOUT...
     GALE POSSIBLE WED.
.PZZ910...OUTER WATERS FROM CAPE LOOKOUT TO FLORENCE OR...
     GALE POSSIBLE WED.
.PZZ915...OUTER WATERS FROM FLORENCE OR TO POINT ST. GEORGE...
     GALE POSSIBLE WED.

.PZ6 CALIFORNIA WATERS...
     NONE.

$$

.FORECASTER SHAW. OCEAN PREDICTION CENTER.



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