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 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50
224
AGPN40 KWNM 202153
MIMPAC

Marine Weather Discussion for N Pacific Ocean
NWS Ocean Prediction Center Washington DC
153 PM PST FRI JAN 20 2017

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

The satellite imagery still shows mostly coudy skies across most
of the region with cyclonic circulation near the northwest. The
lightning density map shows sporadic lightning strikes mainly over
the central waters where the SREF model has PROB30 for severe
TSTMS. The latest observations still indicate higher winds over
the norhern half in the gale force range. The models have
continued to indicate that winds will even increase farther in the
the short term. At 1800z the NCEP map has low pressure 975 mb
about 180 NM west of WA waters and its associated front stretches
southeast then southwest across the waters. The pressure gradient
is fairly tight over most of te region.

The models GFS/CMC/ECMWFHR/UKMETHR/NOGAPS/NAM have initilaized
very well with the 18Z surface observations. The models have also
continued to be in decent agreement and have been quite
consisitenet in the prevous runs and so will not deviate from the
previous forecast and will continue with GFS. In the short term,
Low pressure will remain just west of the WA waters as few more
lows approach the region from the west. The pressure gradient will
remain modest and winds will remain elevated. In the extended
period, the winds will start to diminish.

.SEAS...The seas are still largest over the central waters with
peaks now at 27 ft at the far western part. NWW3 wave model fits
well with the observed seas pattern and is also close to the
ECMWFWAVE model. Both wave models are also in good agreement
through most of the period and so will continue with NWW3 for the
seas.

.EXTRATROPICAL STORM SURGE GUIDANCE...The ESTOFS model indicate
surge to be positive just over 1 ft along the Oregon and
Washington coast and will be positive also over the rest of the
California coast but less than 1 ft.


.WARNINGS...Preliminary.

.PZ5 Washington/Oregon Waters...
.PZZ800...Inner Waters from Cape Flattery to Cape Shoalwater...
     Gale Sunday.
.PZZ900...Outer Waters from Cape Flattery to Cape Shoalwater...
     Storm Sunday.
.PZZ805...Inner Waters from Cape Shoalwater to Cape Lookout...
     Gale Saturday night into Sunday.
     Gale Possible Sunday night.
.PZZ905...Outer Waters from Cape Shoalwater to Cape Lookout...
     Storm Saturday night into Sunday.
.PZZ810...Inner Waters from Cape Lookout to Florence OR...
     Gale Saturday night into Sunday.
     Gale Possible Sunday night.
.PZZ910...Outer Waters from Cape Lookout to Florence OR...
     Storm Saturday night into Sunday.
.PZZ815...Inner Waters from Florence OR to Point St. George...
     Gale Saturday.
     Storm Saturday night.
     Gale Sunday.
.PZZ915...Outer Waters from Florence OR to Point St. George...
     Gale tonight into Saturday.
     Storm Saturday night.
     Gale Sunday.
     Gale Possible Sunday night.

.PZ6 California Waters...
.PZZ820...Inner Waters from Point St. George to Point Arena...
     Gale tonight into Saturday.
     Storm Saturday night.
     Gale Possible Monday.
.PZZ920...Outer Waters from Point St. George to Point Arena...
     Gale tonight into Saturday.
     Storm Saturday night.
     Gale Sunday.
     Gale Possible Sunday night into Monday night.
.PZZ825...Inner Waters from Point Arena to Pigeon Point...
     Gale tonight.
     Gale Saturday night.
     Gale Possible Monday.
.PZZ925...Outer Waters from Point Arena to Pigeon Point...
     Gale tonight into Saturday night.
     Gale Possible Monday into Monday night.
.PZZ830...Inner Waters from Pigeon Point to Point Piedras Blancas...
     Gale tonight.
     Gale Saturday night.
.PZZ930...Outer Waters from Pigeon Point to Point Piedras Blancas...
     Gale tonight.
     Gale Saturday night.
     Gale Possible Monday into Monday night.
.PZZ835...Inner Waters from Point Piedras Blancas to Santa Cruz Island, CA...
     Gale tonight.
     Gale Saturday night into Sunday.
.PZZ935...Outer Waters from Point Piedras Blancas to Santa Cruz Island, CA...
     Gale tonight.
     Gale Saturday night.
     Gale Possible Monday night into Tuesday.
.PZZ840...Inner Waters from Santa Cruz Island, CA to San Clemente Island, CA...
     Gale tonight.
.PZZ940...Outer Waters from Santa Cruz Island, CA to 120W...
     Gale tonight.
     Gale Saturday night.

$$

.Forecaster Musonda. 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.