Marine Interpretation Message
Issued by NWS

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000
AGPN40 KWNM 050741
MIMPAC

MARINE WEATHER DISCUSSION FOR N PACIFIC OCEAN
NWS OCEAN PREDICTION CENTER WASHINGTON DC
1241 AM PDT THU MAY 5 2016

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

SUMMARY...00Z NCEP SFC ANALYSIS SHOWS RIDGING ASSOCD WITH EPAC HI
CENTERED NEAR 36N142W BUILDING E OVER THE PZ5 AND NRN PZ6
WTRS...WITH A WEAK LOW PRES CENTER JUST W OF THE SRN PZ6 WTRS AND
A STATIONARY FRONT EXTNDG ROUGHLY N TO S ACROSS INTERIOR
WASHINGTON/OREGON/CALIFORNIA. THE PRES GRADIENT BETWEEN THE RIDGE
AND THE STATIONARY FRONT LOOKS TIGHTEST OVER THE SRN OREGON AND
NRN CALIFORNIA OFSHR WTRS...WHERE RSCAT PASSES FROM EARLIER TONITE
SHOW A SWATH OF 30 TO 35 KT WINDS IN NORTHERLY FLOW IN BOTH THE
OFSHR AND COASTAL WTRS.

MODELS...THE SYNOPTIC PATTERN DOES NOT CHANGE VERY MUCH OVER THE
OFSHR AREAS DURING THE FCST PRD...SO THE 00Z MED RNG MDLS ARE IN
VERY GUD OVERALL AGREEMNT. MAIN DIFF NOTED IS WITH STRENGTH OF THE
NORTHERLY FLOW OVER THE FCST PRD...WITH 00Z GEM/GFS STRONGER AND
00Z ECMWF/UKMET WEAKER. THE 00Z GFS 30M SOLN LOOKS REPRESENTATIVE
ENUF TO BE USED FOR THE WIND GRIDS FOR TODAY THRU SUN NITE...BUT
WILL SWITCH TO USING A 50/50 BLEND OF 00Z GFS 30M/ECMWF FOR MON
INTO TUE BECAUSE THE MED RNG MDLS ARE HANDLING THE POSITION AND
MOVEMENT OF THE EPAC RIDGE SOMEWHAT DIFFERENTLY DURING THAT
TIMEFRAME.

SEAS...ENP VERSION OF 00Z WAVEWATCH III MDL AND 00Z ECMWF WAM
BOTH INITIALIZED WELL OVER THE OFSHR/COASTAL WTRS. IN ORDER TO
REMAIN CONSISTENT WITH THE PREFERRED MDLS ON THE WIND GRIDS...THE
00Z ENP WW3 MDL WILL BE USED FOR TODAY THRU SUN NITE THEN WILL GO
WITH A 50/50 BLEND OF 00Z ENP WW3/ECMWF WAM FOR MON INTO TUE.

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

.WARNINGS...PRELIMINARY.

.PZ5 WASHINGTON/OREGON WATERS...
.PZZ815...INNER WATERS FROM FLORENCE OR TO POINT ST. GEORGE...
     GALE TONIGHT INTO THU.

.PZ6 CALIFORNIA WATERS...
.PZZ820...INNER WATERS FROM POINT ST. GEORGE TO POINT ARENA...
     GALE TONIGHT INTO FRI.

$$

.FORECASTER SCOVIL. OCEAN PREDICTION CENTER.


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