Marine Interpretation Message
Issued by NWS

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AGPN40 KWNM 192055
MIMPAC

MARINE WEATHER DISCUSSION FOR N PACIFIC OCEAN
NWS OCEAN PREDICTION CENTER WASHINGTON DC
155 PM PDT SAT APR 19 2014

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

12Z GUIDANCE WAS IN GOOD AGREEMENT THROUGH WED SO FAVORED 12Z GFS
THROUGH THEN. COLD FRONT APPROACHES PZ5 WATERS FROM THE W TONIGHT
INTO EARLY SUN...PASSING E THROUGH THE PZ5/NRN CA WATERS SUN INTO
MON. CURRENTLY DONT HAVE GALES IN THE FORECAST IN THE NRN PZ5
WATERS EARLY SUN...BUT THE SITUATION WILL HAVE TO BE MONITORED AS
THE 12Z GFS HAS GALES JUST N OF THE WATERS W/THE 12Z ECMWF/UKMET
SHOWING 30 KT WINDS TO THE N ALSO. THE 12Z CMC DOES BRING GALES
INTO THE FAR NRN PZ5 WATERS FOR THIS TIME PERIOD. TUE INTO WED A
WEAKENING LOW SLIDES SE THROUGH THE PZ5 WATERS. WED INTO THURS
ANOTHER LOW/FRONTAL BOUNDARY APPROACH THE PZ5 WATERS W/GUIDANCE
DIVERGING SOME CONCERNING TIMING AND STRENGTH OF THE LOW FRONT.
12Z GFS/CMC ARE STRONGER W/THE PARENT LOW/ASSOCIATED FRONT W/THE
12Z ECMWF/UKMET BEING WEAKER AND SLIGHTLY FASTER. FOR NOW FAVORED
THE 12Z ECMWF/UKMET WEAKER LOW/FRONTAL BOUNDARY SOLUTION WED INTO
THURS THOUGH WINDS WILL STILL MAX OUT IN THE 20-25 KT RANGE.

CONCERNING THE PZ6 WATERS A COLD FRONT WILL MOVE THROUGH THE NRN
PZ6 WATERS MON. OTHERWISE MAIN WEATHER ISSUE THERE WILL BE A
PERSISTENT HIGH PRES RIDGE OVER THE REGION...THEN A STRENGTHENING
LOW PRES TROUGH ALONG THE SRN CA COAST LATE TUE INTO THURS
ALLOWING FOR AN INCREASE IN WINDS MAINLY IN THE SRN PZ6 WATERS.
12Z GFS/CMC HINT AT GALES IN THE VICINITY OF THE COASTAL WATERS E
OF THE SRN CA WATERS LATE TUE INTO WED...W/THE 12Z ECMWF/UKMET AT
30 KT. SO THAT WILL BE SOMETHING TO KEEP AN EYE ON OVER THE NEXT
FEW DAYS TO SEE IF THIS TREND HOLDS AND WEATHER OR NOT THE TREND
IS TO BRING SAID WINDS FARTHER W INTO THE SRN CA PZ6 WATERS.

.SEAS...FAVORED 12Z NWW3 WHERE 12Z GFS WINDS WERE FAVORED AND 12Z
ECMWF WAVE MODEL WERE 12Z ECMWF WINDS WERE FAVORED.


.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...
     NONE.

.PZ6 CALIFORNIA WATERS...
.PZZ840...INNER WATERS FROM SANTA CRUZ ISLAND, CA TO SAN CLEMENTE ISLAND, CA...
     GALE POSSIBLE TUE NIGHT.

$$

.FORECASTER HOLLEY. OCEAN PREDICTION CENTER.



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