NOAA>NWS>NCEP>OPC>Marine>Pacific>Offshore>North Pacific Marine Weather Discussion
North Pacific Marine Weather Discussion
[Printable Version] [Alt Link/Previous Versions] [Glossary]
AGPN40 KWNM 270915
Marine Weather Discussion for N Pacific Ocean
NWS Ocean Prediction Center Washington DC
215 AM PDT Sat May 27 2017
.FORECAST DISCUSSION...Major features/winds/seas/significant
.weather for the North Pacific N of 30N and E of 150W.
The most recent altimeter passes indicates the seas across the
offshore waters are running 4-9 ft. The 00Z global models are in
very good agreement through at least the first 3 days as the
gradient continues to relax over the region and high pressure
builds across the area. A low pressure trough along the
California coast will strengthen on days 2 and 3, causing winds
to increase to 25 kt over the inner California waters, mainly
along the central and southern California coast. The ECMWF and
UKMET are more progressive across the PZ5 waters than the GFS
after day 3. This is a change from yesterday when the GFS was
more progressive later in the week. In either case the pattern
across the offshore waters will remain quiet as the winds over
the Washington and Oregon waters will be hard pressed to exceed
15 kt with minimal seas. Further South the dominate feature will
be the Low pressure trough expected to strengthen along the
California coast while high pressure continues West of the
waters. I will maintain forecast continuity from yesterday and
populate the wind grids using the GFS, either the 10M or 30M
depending on the stability profile.
Seas...both the ENP and WAM initialized pretty good across the
region. Will populate the wave grids using a 50/50 blend of the
two wave models,
.Extratropical Storm Surge Guidance...N/A.
.PZ5 Washington/Oregon Waters...
.PZ6 California Waters...
.Forecaster Shaw. Ocean Prediction Center.