Marine Interpretation Message
Issued by NWS

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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.



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