

216 

AGPN40 KWNM 091448

MIMPAC



MARINE WEATHER DISCUSSION FOR N PACIFIC OCEAN

NWS OCEAN PREDICTION CENTER WASHINGTON DC

748 AM PDT TUE AUG 9 2016



.FORECAST DISCUSSION: MAJOR FEATURES/WINDS/SEAS/SIGNIFICANT

.WEATHER FOR THE NORTH PACIFIC N OF 30N AND E OF 150W.



RAPIDSCAT INSTRUMENT ABOARD THE ISS RETURNED SEVERAL GALE FORCE

WIND FLAGS ALONG THE WRN EXTENT OF A PASS JUST AFTER 6Z IN THE

COASTAL WATERS ADJACENT TO INNER ZN 825...OR ABOUT 60 NM TO THE NW

OF POINT REYES...PROVIDING SOME VALIDATION TO THE ONGOING FORECAST

THAT CONTAINS GALE WARNINGS ACROSS THE INNER WATERS NEAR THE NRN

CAL COAST. EXPECT GALES OR AT LEAST FREQUENT GALE GUSTS TO

CONTINUE INTO LATE THIS EVE BEFORE EPAC RIDGE AXIS SHIFTS MORE NE

AND WEAKENS WHILE COASTAL LOPRES TROF EXPANDS N ALONG THE OR/WA

COASTS. THIS REPRESENTS NO CHANGE IN ONGOING FORECASTS AS OFFICIAL

GRIDS AND TEXT PRODS FOR SEVERAL DAYS HAVE BEEN ENDING THIS ROUND

OF GALES IN THE TONIGHT PERIOD.



ONLY MINOR EDITS WILL BE MADE TO INITIAL PERIOD TO BETTER REFLECT

CURRENT SHIP/BUOY OBS...OTHERWISE ANTICIPATE LEAVING MOST OF THE

FCST UNCHANGED. SIMPLE PATTERN TO PREVAIL THRUT THE REST OF THE

WEEK AS EPAC RIDGE / COASTAL LOPRES TROF COMBINE TO PRODUCE

SEASONAL LIGHT N TO NW WINDS ACROSS MOST OF THE OFSHR ZNS.



-----------------------------------------------------------------

PREVIOUS DISCUSSION...



THERE WAS A HI RESOL ASCAT PASS AT 06Z WITH A SWATH ALG THE WRN

AREAS OF THE CNTRL CA INTO THE OR AND WA WTRS. STGST MAX WINDS

WHERE DATA WAS AVLB WAS ALG THE CNTRL AND NRN CA WTRS WITH WINDS

TO 25 KT. 



HIGH PRES WAS SITU TO THE W AND NW OF THE CA WTRS AND WL RMN STG

INTO TNGT AS COASTAL TROF RMNS ALG THE NRN AND CNTRL COASTAL

AREAS OF CA. PLAN TO MAINTAIN GALES OVR THE ERN MOST SECTIONS OF

THE NRN CA WTRS INTO EARLY TNGT. MDLS SHOW THE HIGH PRES STARTS

TO BECOM WKR BY THU AND THU NGT WITH THE COASTAL TROF. THE GFS

BECOMS WKR WITH THE STRENGTH OF THE HIGH PRES BY SAT NGT...BUT

OTHER MDLS RMN SOMEWHAT STGR THAN THE GFS. INTERESTINGLY THE GFS

DOES SHOW THE PTNL FOR GALES DVLPG LATER SAT NGT INTO SUN WHILE

OTHER GUID IS NOT AS STG. WL HAV WINDS TO 25 KT OR AS UP TO 30 KT

OVR THE ERN AREAS OF THE NRN CA WTRS SAT NGT. WL CONT TO FAVOR THE

GFS FOR THE GRIDS THRU THE FCST PD.



SEAS...THE MULTIGRID WWIII AND ECMWF WAM ARE IN CLOSE AGRMT THRU

THE FCST PD AND WL USE A 50/50 BLEND.  





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







.WARNINGS...PRELIMINARY.



.PZ5 WASHINGTON/OREGON WATERS...

     NONE.



.PZ6 CALIFORNIA WATERS...

.PZZ820...INNER WATERS FROM POINT ST. GEORGE TO POINT ARENA...

     GALE TODAY INTO TONIGHT. 

.PZZ825...INNER WATERS FROM POINT ARENA TO PIGEON POINT...

     GALE TODAY INTO TONIGHT. 



$$



.FORECASTER COLLINS/ROWLAND. OCEAN PREDICTION CENTER.

