Marine Interpretation Message
Issued by NWS

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AGPN40 KWNM 050905
MIMPAC

MARINE WEATHER DISCUSSION FOR N PACIFIC OCEAN
NWS OCEAN PREDICTION CENTER WASHINGTON DC
205 AM PDT SUN JUL 5 2015

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

ASCAT PASS FROM 04Z INDICATES STRONGEST WINDS OCCURING ACROSS NRN
WA WATERS 20-30 KT WITH GALE CONDITIONS JUST N OF OFFSHORE WATERS.
EXPECT WINDS TO GRADUALLY SUBSIDE TODAY AS THE TROF ALONG VANISL
WEAKENS. FURTHER S...OVER ENTIRE CA WATERS WINDS ARE GENERALLY
W-NW 5-15 KT. THE MOST RECENT ALTIMETER PASS ACROSS THE REGIONS
SHOWS SEAS RANGING FROM 3 FT OVR FAR SRN CA WATERS TO 9 FT ACROSS
WA WATERS. THIS ALSO AGREES WELL WITH CURRENT BUOY OBS IN THE
VCNTY. DURING THE UPCOMING FCST PERIOD THE CONDITIONS ARE EXPECTED
TO REMAIN LIGHT ACROSS MUCH OF THE CA WATERS WITHOUT ANY
SIGNIFICANT TROF OVER INERIOR CA AND HIGH PRES WELL TO THE W OF
THE REGION. FURTHER N...THE GRADIENT WILL GRADUALLY WEAKEN OVR THE
NEXT 24 HRS AS THE RIDGE AXIS ALONG 140W DIMINISHES AND TROF OVR
VANISL WEAKENS. THE GFS INDICATES THE TROF OVER VANISL TO
STRENGTHEN ON DAYS 4 AND 5..ENHANCING THE GRAIDENT ACROSS NRN PZ5
WATERS ONCE AGAIN DURING THAT TIME PERIOD. THE OTHER GLOBAL
MODELS ARE MUCH LESS BULLISH WITH THE WINDS THERE. WILL POP THE
WIND GRIDS USING PRIMARILY THE GFS THROUGH 12Z/08...THEN
TRANSITION TOWARD A 50/50 BLEND OF GFS/ECMWF GUID...BUT ONLY
ACROSS PZ5 WATERS...WILL CONTINUE TO USE GFS FOR PZ6 WATERS AS
DIFFERNECES AMONG THE MODELS ARE VERY MINOR THERE.

SEAS...WILL POP THE WAVE GRIDS USING THE CORRESPONDING MODEL FROM
WIND GRIDS. THE END IS OVERDONE LATER IN THE PERIOD...MAINLY DUE
THE STRENGTH OF THE BL WINDS FCST BY THE GFS OVR PZ5 WATERS. FOR
THAT REASON WILL GO WITH A 50/50 BLEND OF THE TWO MODELS OVR THAT
AREA.

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

.WARNINGS...PRELIMINARY.

.PZ5 WASHINGTON/OREGON WATERS...
     NONE.

.PZ6 CALIFORNIA WATERS...
     NONE.

$$

.FORECASTER SHAW. OCEAN PREDICTION CENTER.


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