Marine Interpretation Message
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000
AGPN40 KWNM 040934
MIMPAC

Marine Weather Discussion for N Pacific Ocean
NWS Ocean Prediction Center Washington DC
134 AM PST SUN DEC 4 2016

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

The satellite picture still shows cyclonic circulation over the
northern waters with mostly coudy skies but no lightning within
the vicinity. The satellite picture also continues to show
anticyclonic circulation with mostly clear skies over the southern
waters. The latest observations including scatterometer pass at
0618Z stil show relatively higher winds over the eastern portion
of the central waters. At 06Z the NCEP map has high pressure 1032
mb west of the southern waters with its ridge extending SE into
the western part of the southern waters. Inland trough stretches
NW along the coast from south CA into north CA and a relatively
tight pressure gradient is over the central waters between the
high and this trough. .

The models CMC/GFS/ECMWFHR/NOGAPS/UKMETHR have continued to
initialize fairly well the 00Z surface observations and they
continue to show good agreement at least through the short term.
For this issuance will still stay close to the previous model
choice and so will stay with GFS initially then switch to ECMWFHR.
In the short term High pressure wil continue to keep a ridge over
the southern waters while inland trough will persist along the CA
coast. The low pressure over the north waters will move east and
high pressure to the west will retreat SW then another high
pressure will build a ridge into the nothern waters from the NW. A
relaxed presure gradient will continue over most areas but low
pressure that will shift SE from the gulf of AK will enhance the
pressure gradient over the far north waters and briefly result in
winds in the gale force range.

.SEAS...The seas are largest over the central and northern waters
with peak at 16 ft. Seas range between 8 and 12 ft over the far
southern waters. NWW3 and ECMWFWAVE models have initialized well
with the 06Z seas observations. Both models continue to show good
agreement in the short term and so will continue with the previous
model choice of NWW3 initially then switch to ECMWFWAVE to account
for the slow GFS in the extended period


.EXTRATROPICAL STORM SURGE GUIDANCE...n/a.


.WARNINGS...Preliminary.

.PZ5 Washington/Oregon Waters...
.PZZ800...Inner Waters from Cape Flattery to Cape Shoalwater...
     Gale Possible Wednesday night into Thursday night.
.PZZ900...Outer Waters from Cape Flattery to Cape Shoalwater...
     Gale Monday.
     Gale Possible Wednesday night into Thursday night.
.PZZ805...Inner Waters from Cape Shoalwater to Cape Lookout...
     Gale Possible Thursday into Thursday night.
.PZZ905...Outer Waters from Cape Shoalwater to Cape Lookout...
     Gale Monday into Monday night.
     Gale Possible Wednesday night into Thursday night.
.PZZ810...Inner Waters from Cape Lookout to Florence OR...
     Gale Possible Thursday.
.PZZ910...Outer Waters from Cape Lookout to Florence OR...
     Gale Monday night.
     Gale Possible Wednesday night.
     Gale Possible Thursday night.
.PZZ815...Inner Waters from Florence OR to Point St. George...
     Gale Possible Thursday.

.PZ6 California Waters...
.PZZ820...Inner Waters from Point St. George to Point Arena...
     Gale Possible Wednesday night into Thursday.

$$

.Forecaster Musonda. Ocean Prediction Center.



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