Marine Interpretation Message
Issued by NWS

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AGPN40 KWNM 290218
MIMPAC

MARINE WEATHER DISCUSSION FOR N PACIFIC OCEAN
NWS OCEAN PREDICTION CENTER WASHINGTON DC
718 PM PDT THU AUG 28 2014

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

LITTLE CHANGE APPEARS NEEDED TO THE PREV FCST FOR THE EVE UPDATE.
T.S. MARIE MAY SOON BE DECLARED POST-TROPICAL AS SHE DRIFTS W-NW
AWAY FROM THE WTRS. LEFTOVER SWELLS FROM MARIE WILL SLWLY DECAY
OVR THE WTRS DURING THE NEXT COUPLE OF DAYS. SEA HTS OVR THE OFF
WTRS ARE CURRENTLY RUNNING CLOSE TO THE PREV FCST...WITH SEAS
RUNNING A FT OR TWO HIGHER OVR SOCAL AND CENTRAL CAL WTRS. WE WILL
MAKE ONLY MINOR ADJUSTMENTS TO THE ONGOING FCST FOR THE EVE UPDATE
AND TWEAK GRIDS TO FIT A LITTLE CLOSER TO NEARBY CWF AND THE NHC/
TAFB FCST.

-----------------------------------------------------------------
PREVIOUS DISCUSSION...

LATEST SAT PIX SHOWS WEAKENING TROPICAL STORM MARIE SW OF OFFSHORE
WATERS. THE SYSTEM WILL CONTINUE TO WEAKEN TO AN AREA OF LOW PRES
WITHIN 24 HRS WHILE THE SWELL GRADUALLY SUBSIDES. SAT PIX ALSO
INDICATES A COLD FRONT APPROACHING THE PZ5 WATERS. LATEST SCAT
PASS FROM 18Z SHOWS MAINLY LIGHT WINDS ACROSS MUCH OF THE OFFSHORE
WATERS...5-15 KT. THE GLBOAL MODELS HAVNT CHANGED MUCH IN THE LAST
COUPLE OF CYCLES. THE OVERALL PATTERN WILL CONTINUE TO SHOW A
GRADUAL STRENGTHENING OF THE GRADIENT ALONG THE CA CST THROUGH MON
NIGHT. WHEN POP THE WIND GRIDS I WILL USE A 50/50 BLEND OF THE 30M
AND 10M GFS BL WINDS TO GIVE A BETTER OVERALL REPRESENTATION OF
THE WIND FIELD. WILL CAP MAX WINDS AT 32 KT TO KEEP GALES OUT OF
THE INNER OFFSHORE WATERS ON DAY 5. I NEED TO SEE MORE EVIDENCE
BEFORE I PULL THE TRIGGER ON GALES FOR DAY 5 JUST YET...AS THE GFS
SEEMS TO INDICATE. IF TREND CONTINUES THEN WILL RECONSIDER IN
LATER PACKAGES.

.SEAS...LONG PD SOUTHERLY SWELLS FROM T.S. MARIE WILL CONTINUE TO
SUBSIDE OVR SRN AND CENTRAL CALIF OFF WTRS OVR THE NEXT DAY OR SO
MARIE MOVES OFF TO THE W-NW AND BECOMES POST-TROPICALS. THE LATEST
OBS OVR THE WTRS INDICATE SEA HTS NR 10 FT OCCURRING JUST OFF THE
SOCAL COAST...TO NR 21 FT NR THE CENTER OF T.S. MARIE (CURRENTLY
LOCATED ABOUT 450 NM SW OF THE SRN MOST SOCAL OFF WTRS)...TO 3 FT
OVR PZ5 OFF WTRS. THE 12Z ENP WW3 MDL GUID APPEARS TO BE RUNNING
WITHIN A FT OR TWO OF MOST OBS OVR CALIF OFF WTRS PER THE LATEST
RP1 OPC SEA STATE ANALYSIS AND ALTIMETER PASSES.

.EXTRATROPICAL STORM SURGE GUIDANCE...NA


.WARNINGS...PRELIMINARY.

.PZ5 WASHINGTON/OREGON WATERS...
     NONE.

.PZ6 CALIFORNIA WATERS...
     NONE.

$$

.FORECASTER MILLS/SHAW. OCEAN PREDICTION CENTER.


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