Marine Interpretation Message
Issued by NWS

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000
AGPN40 KWNM 202123
MIMPAC

MARINE WEATHER DISCUSSION FOR N PACIFIC OCEAN
NWS OCEAN PREDICTION CENTER WASHINGTON DC
223 PM PDT MON OCT 20 2014

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

LOW PRES TROF CONTS TO MOV E ACRS WA/OR/NRN CA OFFSHR WTRS THIS
AFTN AND WL WKN AS IT MOVS INTO THE COASTAL WATERS TNGT. THERE WAS
SOME TSTM ACTIVITY ACRS AREAS OF THE WA/OR AND LESSER ACTIVITY
INTO THE NRN CA OFFSHR WTRS EARLY THIS AFTN. A STG CD FNT WAS
APPROACHING FM THE W AND ASSOC WITH DEEPENING LOW PRES HEADING NE
TOWARDS THE QUEEN CHARLOTTE ISLDS. GFS/UKMET/GEM AND ECMWF MDLS
HAV ANOTHER DVLPG LOW PRES MOVG NE ALG THE FNT ON TUE AND INTO THE
WA/OR WTRS. THE UKMET CONTS TO BE FAVORED WITH GFS SLGTLY FASTER
MOVG THE SYS INLAND. PLAN TO FAVOR THE WWIII ENP WITH MAX SEAS TO
17 FT DVLPG ALG THE ERN OFFSHR AREAS. ANOTHER REINFORCING CD FNT
MOVS EWD INTO THE WTRS LATE WED AND WED NGT AS A SFC LOW PRES
APPROACHES AND PASSES JUST N OF THE NW WA WTRS. MDLS SEEM TO AGREE
WITH THIS...ALTHO GFS IS FURTHER NW WITH THE LOW PRES. BY THU INTO
FRI A CLOSED UPR LOW APPROACHES THE NRN OFFSHR AREA FM THE NW.
BOTH THE GFS AND ECMWF TRACK SFC LOW PRES INTO THE WTRS ON FRI
INTO SAT...ALTHO THE TRACK OF THE LOW IS IN QSTN WITH THE GFS
FURTHER S WITH THE LOW PRES. PLAN TO BLEND THE GFS AND ECMWF
50/50 TO DEAL WITH THE DIFFS WITH CONFDC LOW ATTM ON EVOLUTION.
THERE IS PTNL FOR GALES ON SAT...BUT WITH THE GEM/UKMET ALSO NOT
IN AGRMT PLAN TO GO NO STGR THAN 30 KT OVR THE WA/OR WTRS.

.SEAS...THE 12Z WWIII ENP GUID APPEARS TO HAV INIT WELL OVR THE
OFFSHR WTRS...ALTHO 12Z ECMWF IS NOT AS DVLPD WITH SEAS OVR THE
WTRS. PLAN TO USE 12Z WWIII ENP THRU 00Z SAT...THEN BLEND WWIII
WITH ECMWF FOR FRI NGT INTO SAT NGT...ALTHO HAV LOW CONFDC WITH
THIS OPTION.

.EXTRATROPICAL STORM SURGE GUIDANCE...NA

.WARNINGS...PRELIMINARY.

.PZ5 WASHINGTON/OREGON WATERS...
.PZZ800...INNER WATERS FROM CAPE FLATTERY TO CAPE SHOALWATER...
     GALE TUE NIGHT.
.PZZ805...INNER WATERS FROM CAPE SHOALWATER TO CAPE LOOKOUT...
     GALE TUE INTO TUE NIGHT.
.PZZ905...OUTER WATERS FROM CAPE SHOALWATER TO CAPE LOOKOUT...
     GALE TUE NIGHT.
.PZZ810...INNER WATERS FROM CAPE LOOKOUT TO FLORENCE OR...
     GALE TUE INTO TUE NIGHT.
.PZZ910...OUTER WATERS FROM CAPE LOOKOUT TO FLORENCE OR...
     GALE TUE NIGHT.
.PZZ815...INNER WATERS FROM FLORENCE OR TO POINT ST. GEORGE...
     GALE TUE NIGHT.
.PZZ915...OUTER WATERS FROM FLORENCE OR TO POINT ST. GEORGE...
     GALE TUE NIGHT.

.PZ6 CALIFORNIA WATERS...
     NONE.

$$

.FORECASTER ROWLAND. OCEAN PREDICTION CENTER.



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