000
AGPN40 KWNM 251428
MIMPAC

MARINE WEATHER DISCUSSION FOR N PACIFIC OCEAN
NWS OCEAN PREDICTION CENTER WASHINGTON DC
728 AM PDT MON MAY 25 2015

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

NO CHANGES TO THE FCST ANTICIPATED ATTM.

LATEST SFC OBS AND ASCAT DATA FROM LAST NIGHT SHOWING HIGHEST
WINDS OCCURING NR PT ST GEORGE...AND OFF VANCOUVER ISLAND IN ASSOC
WITH A SERIES OF TROFS INTERACTING WITH EPAC HIGH. CURRENT OBS
SHOWING WINDS TO 25 KT...WITH MODELS SUGGESTING PSBLTY OF WINDS
INCR TO 30 KT AND GUSTS TO 35 KT OFF PT ST GEORGE LATER TODAY AND
INTO TONIGHT AT THE PEAK OF THE DIURNAL CYCLE. OTW...QUIET OVER
THE REMAINDER OF THE OFFSHR/CSTL WATERS.

SEAS...ENP VERSION OF WWIII A BIT UNDERDONE OFF NRN CALIF AS BUOY
RPTS OF 10 AND 11 FT OBSERVED AT 12Z...WHILE MODEL ONLY SHOWING 8
TO 9 FT. WILL MAKE NECESSARY ADJUSTMENTS TO THE GRIDS TO REFLECT
INITIAL CONDITIONS. OTW...MODEL LOOKS REASONABLE ELSEWEHRE OVER
THE CSTL/OFFSHR WATERS.

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PREVIOUS DISCUSSION...

SAT IMG STILL HAS MOSTLY CLDY SKIES BUT NO LIGTNG STRIKES OVR THE
FRCST WTRS. THE RADAR HAS NO INDC OF TSTMS CELLS ACRS THE REGION.
AT 0600Z WKNED HGH PRES 1026 MB CNTRD 300 NM W OF THE NRN WTRS
STILL CONTROLS RIDGES OVR THE NRN WTRS AND JUST W OF THE SRN WTRS.
INLAND LOW PRES 1008 MB OVR NRN CA HAS TROF STRCNG S ALNG THE
COAST. THE PRES GRDNT IS JUST TIGHT OVR THE CNTRL WTRS WHERE MAX
OBSVD WINDS ARE 25 KT.

AN UPPRLVL HIGH PRES RIDGE WITH ITS AXIS JUST W OF THE REGION HAS
KEPT ALL THE ENRGY EITHER E OF THE REGION OR W OF THE REGION. THIS
SENARIO WILL CONTINUE THRU THE FCST PRD AND SO THE GRDNT WILL
REMAIN SLCK AND NO WRNGS IN THE FCST.

THE GLBL MDLS HV INITIALIZED WELL AND THEY CNTNUE TO BE IN GUD
AGRMNT ON THE HGH PRES AND INLAND TROF. WILL STILL STAY WITH GFS.
IN THE SHORT TERM HGH PRES WILL REMAIN ANCHORED TO THE W OF THE
REGION WHILE THE INLAND LOW PRES WILL PERSIST BUT WEAK. THE HGH
PRES WILL WEAKEN IN THE XTNDD PRD BUT THAT WIL STILL KEEP FRNTL
SYSM TO THE W OF THE REGION.

.SEAS...THE SEAS ARE EQUALLY SMALL WITH 10 FT PEAKS OVR THE FRA
ERN PARTS OF THE CNTRL WTRS. SEAS RANGE BTWN 6 AND 8 FT ELSEWHERE.
NWW3 MULTI GRID WV MDL FITS VERY WELL WITH THE OBSVD SEAS PATTERN
AND HAS BEE QUITE CONSSTNT IN THE PREVIOUS RUNS AND SO WILL USE IT
FOR OUR SEAS GRIDS.

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


.WARNINGS...PRELIMINARY.

.PZ5 WASHINGTON/OREGON WATERS...
NONE.

.PZ6 CALIFORNIA WATERS...
NONE.

$$

.FORECASTER ACHORN/MUSONDA. OCEAN PREDICTION CENTER.