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
AGPN40 KWNM 240321

Marine Weather Discussion for N Pacific Ocean
NWS Ocean Prediction Center Washington DC
821 PM PDT Fri Mar 23 2018

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

Atthis time I don`t plan on making any changes to the grids or
associated text forecast. Satellite pictures indicate a strong
low just W of the Washington waters tracking SE.


An ASCAT pass at 18Z indicates an area of gale force winds just
to the west of the northern California waters. Expect these to
diminish in the next few hours, ahead of an area of more
widespread gales. These will continue tonight through Saturday
with a low moving across the northern waters.

12Z model agreement remains excellent throughout the forecast
period. Will use the 30m GFS through 00Z Sun in order to bring
gale force winds with the expected cold air advection. Beyond
this, will use the 10m GFS as there is little model disagreement
and it provides excellent continuity with the previous forecast.

.SEAS...Models appear to have initiated quite well based on the
18Z observations. Will continue using the WW3 throughout, with a
little boost to the seas Saturday and Saturday night with the
stronger winds.



.PZ5 Washington/Oregon Waters...
.PZZ915...Outer Waters from Florence OR to Point St. George...
     Gale Saturday into Saturday night.

.PZ6 California Waters...
.PZZ820...Inner Waters from Point St. George to Point Arena...
     Gale Saturday.
.PZZ920...Outer Waters from Point St. George to Point Arena...
     Gale tonight into Saturday night.


.Forecaster Shaw/Sommerville. Ocean Prediction Center. is the U.S. government's official web portal to all federal, state and local government web resources and services.