Marine Interpretation Message
Issued by NWS

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AGPN40 KWNM 292107
MIMPAC

MARINE WEATHER DISCUSSION FOR N PACIFIC OCEAN
NWS OCEAN PREDICTION CENTER WASHINGTON DC
207 PM PDT WED JUL 29 2015

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

18Z OPC SFC ANALYSIS SHOWS A LOW PRES TROUGH INLAND OVER CA W/A
HIGH PRES RIDGE OVER THE PZ5 WATERS...AND WEAKER RIDGING OVER THE
PZ6 WATERS. AVAILABLE ASCT HIRES DATA SHOWED 15-25 KT WINDS IN
PARTS OF THE OR WATERS AND FAR NW CA WATERS. 15 KT OR LESS WINDS
WERE NOTED OVER THE REST OF THE PZ5 WATERS. DATA WAS SPARSE OVER
THE SE PZ5 WATERS AND CENTRAL PARTS OF THE NRN CA WATERS. LIGHT
WINDS...15 KT OR LESS WERE NOTED IN THE CENTRAL PZ6 WATERS.

12Z GUIDANCE WAS IN GENERAL GOOD AGREEMENT THROUGH FRI NIGHT
W/SOME DIFFERENCES NOTED SAT THROUGH THE END OF THE
PERIOD...MAINLY IN REGARDS TO THE EXACT SETUP/STRENGTH OF THE HIGH
PRES RIDGE OVER THE PZ5 WATERS. CONTINUED W/12Z 30M GFS WINDS
THROUGH EARLY THURS...THEN 12Z 10M GFS WINDS LATER THURS INTO LATE
SAT. FROM EARLY SUN ON FAVORED 12Z ECMWF WINDS IN RELATION TO ITS
SCENARIO INVOLVING THE PLACEMENT OF THE HIGH PRES RIDGE OVER THE
PZ5 WATERS. AT THE MOMENT ANTICIPATE NO GALE HEADLINES OVER THE 5
DAY PERIOD.

.SEAS...FAVORED 12Z NWW3 WERE 12Z GFS WINDS USED AND 12Z ECMWF
WAVE MODEL WHERE 12Z ECMWF WINDS WERE USED. DID BUMP UP SEAS
SLIGHTY IN PARTS OF ZONES PZZ815 AND PZZ820 INITIALLY TO ACCOUNT
FOR USE OF GFS 30M WINDS AT THAT POINT.


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


.WARNINGS...PRELIMINARY.

.PZ5 WASHINGTON/OREGON WATERS...
     NONE.

.PZ6 CALIFORNIA WATERS...
     NONE.

$$

.FORECASTER HOLLEY. OCEAN PREDICTION CENTER.


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