Marine Interpretation Message
Issued by NWS

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AGPN40 KWNM 170814
MIMPAC

MARINE WEATHER DISCUSSION FOR N PACIFIC OCEAN
NWS OCEAN PREDICTION CENTER WASHINGTON DC
114 AM PDT THU APR 17 2014

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

MODELS ARE IN VERY GOOD AGREEMENT OVER THE NEXT SEVERAL DAYS.
GIVEN THE FAST PROGRESSIVE FLOW...SOME DFFRNCS ARE EXPECTED IN
THE MODELS GDNC EARLY NEXT WEEK...BUT THESE ARE RLTVLY MINOR.

COLD FRONT NOW APPCHNG THE PAC NW WILL PUSH E ACROSS THE WATERS
TODAY INTO TNGT WHILE WEAKENING. ASCAT PASS FM 0510Z SHOWED WINDS
20 TO 30 KT CLOSE TO THE FRONT...AS DPCTD BY THE GFS. MODELS IN GD
AGRMNT ON TIMING OF FRONT. STRONG LOW PRES WIL MOVE INTO THE NE
PAC FRI INTO SAT. MODELS IN GD AGREEMENT ON TIMING OF ASSD COLD
FRONT WHIPPING E ACRS THE NRN WATERS FRI NGT INTO SAT. MOD TO HIGH
CNFDC OF GALES FRI NGT INTO SAT AS GFS/ECMWF/UKMET ALL FCST MNML
10M WIND GALE FRC WINDS AND AGREE WELL ON TIMING OF THE FRONT.

ALONG THE CNTRL CA COAST...MODELS FCST NW WINDS TO 25 KT...XCPT TO
30 KT E OF THE OFFSHR WATERS TODAY. THESE WINDS WILL PERSIST THRU
FRI...THOUGH GRADU DMNSHNG WINDS THU INTO FRI.

AS THE SFC LOW ROTATES UNDER THE UPR CNTR JUST S OF THE GF OF
AK OVR THE WEEKEND...NEXT FRNTL BOUNDRY WILL GET SPUN E ACRS THE
NRN WATERS. ALTHOUGH THE MODELS ARE IN FAIRLY GD AGRMNT WITH THE
FRONT...THE GFS FCST A BRF PERIOD OF MNML GALES OVR THE WASH/OR
WATERS SUN. THESE WINDS LOOK TOO HIGH AND ARE 5 TO 10 KT HIGHER
THEN ECMWF/UKMET. CNFDC TOO LOW TO FCST GALES SO WILL CAP WINDS AT
30 KT. FOR MON...THE ECMWF IS THE FASTEST IN PUSHING NEXT SFC E
TWDS THE NNR WATERS. PREFER TO STAY WITH THE GFS FOR
CONTINUITY...AND NOTE THAT THE ECMWF IS AN EASTERN OUTLIER.


.SEAS...THE WAVE WATCH III INITLZD WELL AND GUIDANCE LOOKS GOOD
THRU THE FCST SO WILL STAY CLOSE TO THE MODEL.


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


.WARNINGS...PRELIMINARY. ANY CHANGES WILL BE COORDINATED THROUGH
AWIPS 12 PLANET CHAT OR BY TELEPHONE:

.PZ5 WASHINGTON/OREGON WATERS...
.PZZ800...INNER WATERS FROM CAPE FLATTERY TO CAPE SHOALWATER...
     GALE POSSIBLE FRI NIGHT.
.PZZ900...OUTER WATERS FROM CAPE FLATTERY TO CAPE SHOALWATER...
     GALE POSSIBLE FRI NIGHT.

.PZ6 CALIFORNIA WATERS...
     NONE.

$$

.FORECASTER PROSISE. OCEAN PREDICTION CENTER.



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