Marine Interpretation Message
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AGPN40 KWNM 261901

Marine Weather Discussion for N Pacific Ocean
NWS Ocean Prediction Center Washington DC
1201 PM PDT Fri May 26 2017

.FORECAST DISCUSSION...Major features/winds/seas/significant
.weather for the North Pacific N of 30N and E of 150W.

Summary...The 12z ncep surface analysis shows low pres troughing
extending across wrn conus, with ridging associated with a high
pres center near 49N141W building e towards the conus west
coast. The trough and ridge couplet is producing a pressure
gradient with moderate winds in parts of the washington and
california offshore waters. Latest available ascat hi-res and
ascat passes from early this morning show 20 to 25 kt winds in n
to nw flow over the wrn washingon and oregon offshore zones, and
also in the nrn california offshore zones.

Models...The 12z medium range models are in good agreement
across the offshore waters during the forecast period. The main
difference noted with the models is that the ukmet is too
progressive with a low pres system expected to move into the wrn
gulf of alaska for Tue through Wed night. The 12z gfs 10m
solution looks representative enough to be used for the wind
grids through the entire forecast period.

Seas...The 12z enp wavewatch and 12z ecmwf wam both initialized
well over the coastal/offshore waters, and are in good overall
agreement with only minor differences across the offshore waters
through Wed night, so a 50/50 blend of the 12z models will be
used for the sea height grids for the entire forecast period to
smooth out the differences.

.Extratropical Storm Surge Guidance...N/A.


.PZ5 Washington/Oregon Waters...

.PZ6 California Waters...


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