Marine Interpretation Message
Issued by NWS

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AGPN40 KWNM 272019
MIMPAC

MARINE WEATHER DISCUSSION FOR N PACIFIC OCEAN
NWS OCEAN PREDICTION CENTER WASHINGTON DC
1219 PM PST FRI FEB 27 2015

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

12Z GUID CONT TO RMN IN GOOD AGRMT THRU THE END OF THE FCST PER
WED. WL USE THE 12Z GFS AS THE BASIS FOR THE GRIDS WITH ONLY THE
FOLLOWING ADJUSTMENTS: WL USE 30M WINDS BEG SAT 18Z THRU SUN 12Z
OFF NRN CAL COAST AND AGAIN 30M WINDS MON 18Z THRU TUE
12Z...HOWEVER HERE WILL CAP WINDS TO 30 KT. EXPLANATION BLO.

NEXT GALE EVENT XPCTD W/IN 24 HRS AS PRES GRAD INCRS B/W SFC LOW
PRES MVG S TO NR SAN FRAN BAY AND STG HIGH PRES NR THE GLFAK
NOSING SE. ALL GLOBAL AND REGIONAL GUIDANCE HAS BEEN VERY
CONSISTENT WITH THESE WINDS MEETING MINIMAL GALE THRESHOLD. CONFDC
RMNS HIGH. WINDS XPCTD TO ABATE BLO WARNING CRITERIA BY EARLY SUN
MORN AS SFC LOW WKNS...DRIFT S...AND ULTIMATELY DSIPTS.

ANOTHER UPR S/W TROF IS THEN FCST TO QUICKLY MV S ALONG THE ERN
PERIPHERY OF EPAC RIDGE MON AND TUE - ALMOST ALONG AN IDENTICAL
TRACK TO THE S/W THIS COMING WKND - INCLUDING ANOTHER COASTAL LOW
AND LOW PRES TROF. 12Z GFS CONTD ITS TREND OF A WKR SOLN AND HAS
BEEN FOR THE PAST FEW CYCLES. 12Z ECMWF AND UKMET ALSO NOT
SUPPORTIVE OF A GRADIENT CAPABLE OF PRODUCING GALE FORCE WINDS. AS
MENTIONED BEFORE WL USE THE 30M GFS WINDS DURING THIS PER OF
HIGHER WINDS...HOWEVER WILL MAX CONDS TO 30 KT TO BEST REFLECT
GLOBAL CONSENSUS.

SEAS...BASED ON A REGIONAL SEA STATE ANALYSIS 12Z ECMWF WAM SEEMS
MOST REPRESENTATIVE OF CURRENT OBS. WL USE THIS GUID FOR 6 HRS
THEN TRANSITION FCST TO A 50/50 ENP/WAM BLENDED SOLN.

.EXTRATROPICAL STORM SURGE GUIDANCE...N/A


.WARNINGS...PRELIMINARY.

.PZ5 WASHINGTON/OREGON WATERS...
.PZZ815...INNER WATERS FROM FLORENCE OR TO POINT ST. GEORGE...
     GALE SAT INTO SAT NIGHT.

.PZ6 CALIFORNIA WATERS...
.PZZ820...INNER WATERS FROM POINT ST. GEORGE TO POINT ARENA...
     GALE SAT INTO SAT NIGHT.
.PZZ920...OUTER WATERS FROM POINT ST. GEORGE TO POINT ARENA...
     GALE SAT INTO SAT NIGHT.

$$

.FORECASTER COLLINS. OCEAN PREDICTION CENTER.



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