Marine Interpretation Message
Issued by NWS

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000
AGPN40 KWNM 010846
MIMPAC

MARINE WEATHER DISCUSSION FOR N PACIFIC OCEAN
NWS OCEAN PREDICTION CENTER WASHINGTON DC
146 AM PDT SUN MAY 1 2016

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

THERE WAS A RECENT ASCAT SWATH AT 0540Z ALG THE ERN AREAS OF THE
OFFSHR WTRS. THE STGST WINDS WERE TO 30 KT OVR THE ERN AREAS OF
OR INTO THE NRN CA WTRS.

HIGH PRES CONTS TO BE OVR THE NRN AREAS OF THE OFFSHR WTRS EARLY
THIS MRNG AND BECOMS MUCH WKR LATER THIS AFTN. ELSW A COASTAL
TROF RMNS ALG CA INTO OR WHICH ALSO BECOMS WKR THRU EARLY TNGT. A
CD FNT W OF THE WTRS GRADUALLY APPROACHES THE WTRS LATER TNGT AND
SLOWLY MOVS E ACRS THE WA/OR OFFSHR WTRS MON...THEN INTO THE NRN
AND CNTRL CA WTRS TUE AND TUE NGT. THE GFS CONTS TO BE WKR WITH
THE NLY SURGE THAT DVLPS ALG AND W OF THE CD FNT. THE UKMET/ECMWF
HAV BEEN PREFERRED WITH A MDT NLY SURGE DVLPG OVR THE NRN CA
OFFSHR WTRS TUE NGT...AND EXPANDING NWD INTO WA WTRS. THE 00Z GFS
NOW IS IN BETTER AGRMT WITH THE UKMET/ECMWF AND THERE IS ALSO
AGRMT WITH THE GEM SHOWING A STGR NLY SURGE. THE GFS HAS TRENDED
STGR WITH ITS WINDS BY THU NGT ALG THE ERN AREAS OF THE NRN CA
WTRS. PLAN TO STAY WITH THE ECMWF WHICH HAS BEEN CONSISTENT WITH
WINDS...AND LATER SHIFTS WL NEED TO VERIFY WHETHER GFS STAYS CONSISTENT
WITH STGR WINDS.

.SEAS...THE MULTIGRID WWIII AND ECMWF WAM LOOK SMLR INIT AND WL
BLEND 50/50 THRU MON...THEN FAVOR THE ECMWF WAM MON NGT THRU THU
NGT WHICH HAS BEEN CONSISTENTLY BEEN HIGHER WITH SEAS ASSOC WITH
A DVLPG NLY SURGE

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

.WARNINGS...PRELIMINARY.

.PZ5 WASHINGTON/OREGON WATERS...
     NONE.

.PZ6 CALIFORNIA WATERS...
.PZZ820...NONE.

$$

.FORECASTER ROWLAND. OCEAN PREDICTION CENTER.



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