Wed, 27 Jun 2018 20:05:22 +0000 Wed, 27 Jun 2018 20:05:22 +0000 Ocean Prediction Center - Marine Weather Discussion (N Pacific) http://www.opc.ncep.noaa.gov/ none Ocean Prediction Center web team en-us www.opc.ncep.noaa.gov/feedback.php http://www.opc.ncep.noaa.gov/images/xml_logo_opc.gif http://www.opc.ncep.noaa.gov/ NOAA logo 95 45 MIMPAC

Marine Weather Discussion for N Pacific Ocean
NWS Ocean Prediction Center Washington DC
104 PM PDT Wed Jun 27 2018

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

The 18Z surface analysis indicated cold front west of the
Washington and Oregon waters, with high pressure ridge across the
Washington and Oregone waters, and trough along California coast.
The most recent ASCAT pass from 1727Z with data available for
only southern California waters and far southeast portion of
central California waters indicated the strongest winds around 20
KT which matches up well with model forecast fields. Further
north there was a ship report of 30 KT at 18Z over the far
northeast portion of central California waters. QC of this ship
indicated a high bias of 4.98 KT, and 25 KT seems more
reasonable.

The 12z models continue to be in very good agreement with surface
features during the entire forecast period. The front currently
west of the Washington and Oregon waters will move into the
waters later tonight into early Thursday while weakening before
eventually dissipating over the area later Thursday or Thursday
evening. The main feature through the period will be the coastal
trough which will slowly intensify the next few days, and even
more Saturday through Monday. The models seem to be keying in on
several periods of gales, from later Friday into Saturday night,
and again from Sunday night through Monday. Overall, the models
are in decent agreement with the initial period with the GFS
indicating gales just stradling the northern California offshore
waters Saturday and Saturday night, with better coverage in the
offshore waters. There is better agreement for Sunday night into
Monday with GFS/UKMET and Canadian GEM in very good agreement on
the placement and intensity of gales. Plan on using the GFS for
the wind grids, which will result in only minor changes to
previous warning headlines.

.SEAS...The 18Z sea state analysis indicated that observed seas
matche up well with the ENP and ECMWF WAM forecast values, and
plan on using a 50/50 blend throgh 12Z Saturday. For the
remainder of period, will favor the slightly higher ENP values.

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

.WARNINGS...Preliminary.

.PZ5 Washington/Oregon Waters...
None.

.PZ6 California Waters...
.PZZ820...Inner Waters from Point St. George to Point Arena...
Gale Possible Saturday into Saturday night.
Gale Possible Sunday night into Monday night.
.PZZ825...Inner Waters from Point Arena to Pigeon Point...
Gale Possible Saturday.
Gale Possible Sunday.

$$

.Forecaster Kosier. Ocean Prediction Center.
]]> Wed, 27 Jun 2018 20:05:21 +0000 http://www.opc.ncep.noaa.gov/shtml/NFDMIMPAC.shtml http://www.opc.ncep.noaa.gov/shtml/NFDMIMPAC.shtml?201806272005 Ocean Prediction Center web team