Marine Interpretation Message
Issued by NWS

Home | Current Version | Previous Version | Text Only | Print | Product List | Glossary On
Versions: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29
000
AGPN40 KWNM 302100
MIMPAC

MARINE WEATHER DISCUSSION FOR N PACIFIC OCEAN
NWS OCEAN PREDICTION CENTER WASHINGTON DC
200 PM PDT TUE AUG 30 2016

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

ASCAT PASS FROM 18Z SHOWS WEAK COLD FRONT MAKING ITS WAY ACROSS
THE WA/OR WATERS WITH S-SW WINDS 10-20 INADV OF BNDRY. FURTHER
S...A RIDGE AXIS EXTENDS NE-SW OVER THE CENTRAL CA WATERS...WHILE
A VERY WEAK LOW CENTER IS INDICATED IN THE CENTRAL WATERS AS WELL.
MAX SEAS AS INDICATED BY RECENT ALTIMETER PASSES AND CURRENT OBS
ARE OCCURING OVER SRN WATERS AND FAR SERN PTN OF CENTRAL CA
WATERS...NEAR 9 FT. BUOY 46047 RPT 7 FT AT 20Z.

THE OVERALL FCST PATTERN HASNT CHANGED MUCH WITH THE 12Z GLOBAL
MODEL CYCLE. THE RELATIVELY WEAK COASTAL TROF WILL PERSIST ALONG
THE CA CST FOR MUCH OF THE WEEK...REMAINING THE FOCAL POINT FOR
THE HIGHER WINDS. MAX WINDS ARE GENERALLY EXPECTED TO BE 25 KT
OVER THE INNER OFFSHORE WATERS...WITH HIGHER WINDS OCCURING IN
THE COASTAL ZONES. ATTM I DONT EXPECT ANY GALES TO
OCCUR...ALTHOUGH THE BEST CHANCE WILL BE IN THE CENTRAL CA COASTAL
WATERS...ESPECIALLY IN GUSTS. HIGH PRES WILL REMAIN CENTERED WELL
W OF THE REGION THROUGHOUT THE WEEK...OCCASIONALLY RIDGING E INTO
THE NRN AND CENTRAL CA WATERS. FURTHER N...THE PATTERN WILL REMAIN
FAIRLY PROGRESSIVE ACROSS THE WA/OR WATERS AS A SERIES OF TROFS OR
WEAK FRONTAL BNDRIES CROSS THE AREA. LATE IN THE WEEK HIGH PRES
WILL BUILD ACROSS THE WA/OR WATERS.

FOR THE MOST PART THE GLOBAL MODELS ARE IN PREETY GOOD AGREEMENT
THROUGHOUT THE FCST PERIOD. THE MODELS CONTINUE TO PART WAYS
SOMEWHAT AFTER DAY 3 AS THE GFS REMAINS THE OUTLIER AND BRINGS A
LOW CENTER SE INTO THE WA/OR REGION...WHILE THE UKMET/ECMWF SOLN
KEEPS A WEAK CENTER JUST N OF THE WATERS. WILL KEEP CONTINUITY
AND POP THE GRIDS USING COMBINATION OF ECMWF AND UKMET THROUGHOUT
THE FCST PERIOD.

SEAS...BOTH THE ENP AND WAM INTIIALIZED WELL ACROSS THE WATERS.
WILL POP THE WAVE GRIDS USING THE CORRESPONDING MODEL TO MATCH THE
WIND GRIDS.

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

.WARNINGS...PRELIMINARY.

.PZ5 WASHINGTON/OREGON WATERS...
     NONE.

.PZ6 CALIFORNIA WATERS...
     NONE.

$$

.FORECASTER SHAW. OCEAN PREDICTION CENTER.



USA.gov is the U.S. government's official web portal to all federal, state and local government web resources and services.