Marine Interpretation Message
Issued by NWS

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000
AGPN40 KWNM 281419
MIMPAC

MARINE WEATHER DISCUSSION FOR N PACIFIC OCEAN
NWS OCEAN PREDICTION CENTER WASHINGTON DC
719 AM PDT SUN AUG 28 2016

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

FOR THE MORNING UPDATE WE WILL NOT MAKE MAJOR CHANGES TO THE PREV
OPC FCST. WE WILL TWEAK THE PREV FCST SLIGHTLY TO FIT CURRENT
CONDITIONS AND NEARBY TAFB AND COASTAL WTRS FCSTS. THE 06Z GFS
CYCLE IS VERY SIMILAR TO THE 00Z CYCLE WHICH WAS USED FOR THE
PREV FCST.

SEAS...SEA HEIGHTS RANGE FROM 4 TO 7 FT OVR THE OFF WTRS PER THE
LATEST OBS AND RP1 SEA STATE ANALYSIS. NO MAJOR CHANGES APPEAR
NEEDED TO THE PREV FCST FOR THE AM UPDATE. AGAIN...WE WILL TWEAK
THE PREV GRIDS AND FCST SLIGHTLY TO FIT WITH NEARBY COASTAL AND
TAFB FCSTS A LITTLE BETTER...BUT OTW MAKE NO SIG CHANGES AT THIS
TIME.

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

00Z GLOBAL MODELS IN GOOD AGREEMENT THROUGH THE FORECAST PERIOD.
WILL POPULATE WIND GRIDS FROM 00Z GFS THROUGH THE PERIOD.

FAIRLY QUIET WEATHER EXPECTED OVER THE REGION TODAY AND TONIGHT. A
WEAK COLD FRONT WILL APPROACH THE NRN WATERS TODAY...AND SLOWLY
MOVE SE ACROSS THE PZ5 WATERS TONIGHT INTO TUE. WINDS GENERALLY
EXPECTED TO BE IN THE 20 KT RANGE WITH THIS FRONT. HOWEVER...GFS
CONTINUES TO SHOW POSSIBILITY OF A WEAK FRONTAL WAVE DEVELOPING
ALONG THE FRONT OVER THE NRN PZ5 WATERS MON NIGHT INTO TUE...AND
HAS SOME SUPPORT FROM THE 00Z UKMET. WILL KEEP MENTION OF WINDS TO
25 KT IN THE NRN PZ5 WATERS FOR MON NIGHT INTO TUE.

OTHER WEATHER FEATURE DURING THE FORECAST PERIOD IS DEVELOPMENT OF
COASTAL TROF ALONG THE CENTRAL AND SRN CALIFORNIA COAST MON AND
MON NIGHT...AND PERSISTING THROUGH THE REMAINDER OF THE FORECAST
PERIOD. WINDS WILL GENERALLY BE IN THE 25 KT RANGE ALONG THE ERN
PORTIONS OF THE CENTRAL AND SRN CALIFORNIA OFFSHORE WATERS
BEGINNING MON NIGHT AND CONTINUING THROUGH THE REMAINDER OF THE
FORECAST PERIOD. HIGHER WINDS MAY BE POSSIBLE IN THE ADJACENT
COASTAL WATERS...WITH GUSTS TO GALE FORCE POSSIBLE. ALSO GFS
CONTINUES TO SHOW A FEW 30 KT WIND BARBS MAKING IT INTO THE
OFFSHORE WATERS TUE AND TUE NIGHT. WILL KEEP WINDS TO 30 KT IN THE
FORECAST FOR TUE AND TUE NIGHT.

.SEAS...WWIII ENP WITHIN A FT OR TWO OF CURRENT OBS. WILL
POPULATE WAVE GRIDS WITH 00Z ENP THROUGH THE FORECAST PERIOD.


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



.WARNINGS...PRELIMINARY.

.PZ5 WASHINGTON/OREGON WATERS...
     NONE.

.PZ6 CALIFORNIA WATERS...
     NONE.

$$

.FORECASTER MILLS/ACHORN. OCEAN PREDICTION CENTER.


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