Marine Interpretation Message
Issued by NWS

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000
AGPN40 KWNM 290844
MIMPAC

MARINE WEATHER DISCUSSION FOR N PACIFIC OCEAN
NWS OCEAN PREDICTION CENTER WASHINGTON DC
1244 AM PST MON DEC 29 2014

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

THE 06Z SFC ANALYSIS INDICATED A WEAK HIGH PRES RIDGE EXTENDING
ACROSS THE OFFSHORE WATERS...WITH A TROUGH ALONG THE CENTRAL CA
COAST. AN ASCAT PASS FROM LATE SUN EVENING INDICATED THE STRONGEST
WINDS WERE OVER THE WASHINGTON OFFSHORE WATERS RANGING FROM 20 TO
30 KT. WINDS OVER THE REMAINDER OF THE AREA WERE MOSTLY IN THE 10
TO 20 KT RANGE.

THE 00Z MODELS ARE IN DECENT AGREEMENT THROUGH THE FCST PERIOD.
HIGH PRES RIDGE WILL PERSIST OVER THE E PAC WHICH WILL KEEP
SIGNIFICANT SYSTEMS W AND NW OF THE AREA THROUGH THE WEEK. THE
MODELS STILL INDICATE COASTAL TROUGH WILL STRENGTHEN THROUGH
MIDWEEK BEFORE WEAKENING LATER IN THE WEEK. ALL OF THE MODELS HAVE
BACKED OFF ON THE WINDS OVER THE OREGON AND N CA WATERS MON NIGHT
AND TUE...AND NOW KEEP WINDS JUST BELOW GALE THRESHOLD. THE FOCUS
NOW SEEMS TO BE THE CENTRAL CA WATERS TUE NIGHT INTO EARLY
WED...AND THE SE OREGON AND N CA WATERS WED NIGHT. WILL CONTINUE
WITH THE WARNING HEADLINES FOR THESE AREAS...THOUGH CONFDC IS LOW
TO MDT AS IT LOOKS LIKE THIS WILL BE MARGINAL AND BRIEF EVENT. THE
TROUGH WILL WEAKEN THU NIGHT AND FRI WITH LIGHT WINDS EXPECTED
OVER ALL THE AREA THU NIGHT THROUGH FRI NIGHT. WILL POPULATE GRIDS
USING THE GFS 30M WINDS THROUGH THE PERIOD.

.SEAS...THE 06Z SEA STATE ANALYSIS INDICATED THAT OBSERVED SEAS
WERE WITHIN A FT OF THE MWW3 FCST VALUES. WILL POPULATE GRIDS
USING THE MWW3 THROUGH THE PERIOD.

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

.WARNINGS...PRELIMINARY.

.PZ5 WASHINGTON/OREGON WATERS...
.PZZ815...INNER WATERS FROM FLORENCE OR TO POINT ST. GEORGE...
     GALE POSSIBLE WED INTO WED NIGHT.

.PZ6 CALIFORNIA WATERS...
.PZZ820...INNER WATERS FROM POINT ST. GEORGE TO POINT ARENA...
     GALE POSSIBLE WED INTO WED NIGHT.
.PZZ825...INNER WATERS FROM POINT ARENA TO PIGEON POINT...
     GALE POSSIBLE TUE NIGHT.
.PZZ830...INNER WATERS FROM PIGEON POINT TO POINT PIEDRAS BLANCAS...
     GALE POSSIBLE TUE NIGHT.

$$

.FORECASTER KOSIER. OCEAN PREDICTION CENTER.


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