

297 

AGPN40 KWNM 262116

MIMPAC



MARINE WEATHER DISCUSSION FOR N PACIFIC OCEAN

NWS OCEAN PREDICTION CENTER WASHINGTON DC

216 PM PDT TUE JUL 26 2016



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

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



UNFORTUNATELY THE MOST RECENT ASCAT AND RAPID SCAT PASSES MISSED

THE AREA ALONG THE NRN CA CST WHERE THE GALES ARE FCST. THE

OVERALL PATTERN ACROSS THE EPAC HASNT CHANGED MUCH OVER THE PAST

FEW DAYS WITH A LARGE RIDGE ANCHORED W OF THE OFFSHORE WATERS

WHILE A TROF PERSISTS ALONG THE CALIFORNIA CST. DURING THE NEXT 7

DAYS THIS OVERALL BLOCKY PATTERN WILL PERSIST...WHILE THE TROF

ALONG THE CA CST INTENSIFIES AND EXPANDS N SLIGHTLY INTO SW

OREGON. THE RESULTING PRESSURE GRADIENT WILL STRENGTHEN AND

PRODUCE A STEADY PERIOD OF GALES ACROSS THE INNER OFFSHORE WATERS

ALONG THE NRN CA CST...AND BRIEFLY BRING GALES TO THE INNER WATERS

OF THE FAR SW OREGON CST. FURTHER N...THE N TO NW FLOW WILL ALSO

CONTINUE ACROSS THE WA/OR WATERS. THE BIGGEST DECISION DURING THE

WEEK WILL BE WHETHER OR NOT TO ISSUE GALES FOR FRI NIGHT INTO SAT

OVER THE FAR NE PTN OF THE WASHINGTON WATERS. THE GFS HAS BEEN

VERY CONSISTANT THE LAST COUPLE OF DAYS IN FCSTING THE POSS OF

GALES OVER THAT REGION...WHILE THE OTHER GLOBAL MODELS ALSO HINT

AT GALES. WE HAVE BEEN HOLDING OFF ON ISSUING GALES UNTIL THE

EVENT GETS CLOSER. AFTER COORDINATION WITH THE MEDIUM RANGE FCSTER

IT WAS DECIDED TO MAINTAIN MAX WINDS OF 30 KT ACROSS THE

WASHINGTON WATERS FOR LATER IN THE WEEK. IF THE NEXT CYCLE OR TWO

GALES MAY NEED TO BE ISSUED FOR THE FAR NE WA WATERS. WILL POP THE

WIND GRIDS USING A 50/50 BLEND OF THE 10M AND 30M WINDS...WITH

SOME MINOR EDITS TO KEEP GALES OUT OF THE OUTER WATERS...AND TO

KEEP GALES FROM THE WASHINGTON WATERS AS WELL.



SEAS...BOTH THE ENP AND WAM ARE IN REALLY GOOD AGREEMENT

THROUGHOUT THE FCST PERIIOD...AND INITIALIZED FAIRLY WELL. WILL

POPULATE THE WAVE GRIDS USING THE ENP THROGHOUT THE FCST PERIOD.



.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 TONIGHT INTO THU. 

     GALE POSSIBLE THU NIGHT INTO SUN. 



$$



.FORECASTER SHAW. OCEAN PREDICTION CENTER.

