AGPN40 KWNM 201525
MIMPAC

Marine Weather Discussion for N Pacific Ocean
NWS Ocean Prediction Center Washington DC
825 AM PDT Mon May 20 2019

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

The GOES infrared satellite imagery show a strong low pressure
system just W of the offshore waters this morning, while the
Ascat winds retrievals from overpasses between 0500 and 0730 UTC
indicated gales mainly to the SW of the low center. The waters
vapor imagery shows the associated short wave trough moving E
towards the PZ5 waters on the E side of ridge, and is moving into
the longer wave trough now inland. The 06Z and 00Z GFS/ECMWF
winds are initialized fairly well when compared with the current
data, and the models agree fairly well on the surface low moving
into the offshore waters late today into tonight as it pulls the
associated cold front over the region. The models agree fairly
well on the system increasing winds in the offshore waters
tonight, mainly in the S quadrant of the low. Since the Ascat
indicated strong gales were already present in in the S quadrant,
confidence is above average on the gales reaching the offshore
waters tonight. Since the previous forecast had headlines up
consistent with the GFS, am planning on continuing with them
tonight. 

The models then indicate that the cold advection behind the 
front will continue moving S down the coast Tue and Wed, which 
will destabilize the surface boundary layer. This should allow
for a deeper mixed layer near the surface, and with low level
winds at 925 up to 50 kt as indicated by the GFS, the likelihood
of at least minimal gales mixing to the surface seems to be above
average especially with the ridge amplifying to the W of the
offshore waters and a deep trough to the E allowing for a strong
surface pressure gradient to develop. The GFS indicates gales 
will persist into Thu along the California coast, and the
tightening pressure gradient and increasing winds are supported
by the rest of the guidance. As a result, confidence remains
above average on gales persisting into Thu in this region, so not
planning on making any major changes to the previous headlines
which were based on the 00Z GFS.

In the medium range, the GFS indicates that the ridge will be
reinforced and extends further N into the Gulf of Alaska as the
upper trough persists just inland. The models show a second
surface high building W of Vancouver Island by Fri, as it 
interacts with a coastal trough along the coast over Washington 
and Vancouver Island. As expected, the models show the pressure 
gradient across and N of PZ5 tightening in response, while the 
winds increase. The GFS shows another round of gales developing, 
but over and N of the PZ5 zones Thu night into Fri night. The 
rest of the global models generally support the synoptic features
of the GFS, so confidence is about average on the gales. Since 
they were in the previous forecast, am not planning on making any
major changes through the remainder of the forecast period.

-----------------------------------------------------------------
PREVIOUS DISCUSSION...

The latest model guidance indicates that weakening low pressure 
along the northern California coast will continue to move inland 
tonight. Northwest winds up to 25 knots or so currently over the 
northern and central pz6 waters will move south into the southern
pz6 waters by Monday. Another low will then move into the pz5 
waters by late Monday and then continue inland over Oregon by 
Tuesday. Northwest winds up to 35 knots will move into the 
southwestern pz5 and northwestern pz6 waters by Monday night. 
Strong high pressure will then build west of the offshore waters 
by Tuesday, with northerly gales developing west of Pigeon Point 
by early Wednesday. These gales will then expand north Wednesday 
and Thursday, and weaken below gale force by Thursday night. 

Farther north, northwest winds will come close to gale force over
the northern Washington offshore waters by Wednesday night, but 
for now will keep the strongest winds at 30 knots and see what 
the later model guidance shows. A better chance of gales will
then occur over this same area by Thursday night. The latest 
runs of the gfs and ecmwf look to be in reasonable agreement 
across the eastern Pacific through Friday. For wind grids will 
use the gfs winds throughout with some edits. Only change to
warnings will be to add gales to the northeastern pz5 waters by
Thursday night.

For wave height grids will also use the wavewatch throughout the
forecast period. The wavewatch is showing higher seas than the
ecmwf wam in the gale areas and this looks more reasonable.

.EXTRATROPICAL STORM SURGE GUIDANCE...With potentially strong 
low pressure approaching the northwest coast of the U.S. the next
couple days, please continue to monitor the coastal NWS offices 
for storm surge information. The latest surge guidance appears 
reasonable through Tuesday with the GFS winds appearing
reasonable.

.WARNINGS...Preliminary.

.PZ5 Washington/Oregon Waters...
.PZZ800...Inner Waters from Cape Flattery to Cape Shoalwater...
     Gale Possible Thursday night into Friday night. 
.PZZ915...Outer Waters from Florence OR to Point St. George...
     Gale today into Tuesday. 

.PZ6 California Waters...
.PZZ820...Inner Waters from Point St. George to Point Arena...
     Gale tonight into Tuesday night. 
     Gale Possible Wednesday into Thursday. 
.PZZ920...Outer Waters from Point St. George to Point Arena...
     Gale tonight into Tuesday night. 
.PZZ825...Inner Waters from Point Arena to Pigeon Point...
     Gale Tuesday night.
     Gale Possible Wednesday into Thursday. 
.PZZ925...Outer Waters from Point Arena to Pigeon Point...
     Gale Tuesday night.
.PZZ830...Inner Waters from Pigeon Point to Point Piedras Blancas...
     Gale Tuesday night.
     Gale Possible Wednesday into Wednesday night. 
.PZZ930...Outer Waters from Pigeon Point to Point Piedras Blancas...
     Gale Tuesday night.

$$

.Forecaster Kells/Nolt. Ocean Prediction Center.
Last Update:15:27Z, 20 May 2019
Updates: Four times per day

FZPN25 KWBC 201548
OFFPZ5

Offshore Waters Forecast
NWS Ocean Prediction Center Washington DC
848 AM PDT Mon May 20 2019

Washington and Oregon waters-
Inner waters from  60 nm to 150 nm offshore.
Outer waters from 150 nm to 250 nm offshore.

Seas given as significant wave height, which is the average
height of the highest 1/3 of the waves. Individual waves may be
more than twice the significant wave height.

PZZ898-210445-
848 AM PDT Mon May 20 2019

.SYNOPSIS FOR WASHINGTON AND OREGON WATERS...A strong low
pressure system will pass E and SE across the waters today into
Tue, then move inland to the SE of the area late Tue and Tue
night. A large area of high pressure will build SW the region
today through Wed night, then drift W Thu through Fri while
weakening. A low pressure trough will develop along the coasts of 
Washington and Vancouver Island Wed through Thu, then persist
through Fri night. A second high will build W of the area Wed
night through Thu night, then slowly weaken Fri and Fri night.

$$

PZZ800-210445-
Cape Flattery to Cape Shoalwater between 60 NM and 150 NM
offshore-
848 AM PDT Mon May 20 2019

...GALE FORCE WINDS POSSIBLE THU NIGHT...

.TODAY...S to SE winds 15 to 20 kt. Seas 6 to 7 ft. 
.TONIGHT...SE winds 15 to 25 kt, becoming E 5 to 15 kt. Seas
7 to 12 ft. 
.TUE...N to NE winds 5 to 15 kt, becoming NW 15 to 25 kt. Seas
9 to 13 ft. 
.TUE NIGHT...NW winds 20 to 30 kt. Seas 9 to 13 ft. 
.WED...NW winds 20 to 30 kt. Seas 9 to 13 ft. 
.WED NIGHT...NW winds 20 to 30 kt. Seas 10 to 13 ft. 
.THU...NW winds 20 to 30 kt. Seas 9 to 12 ft. 
.THU NIGHT...NW winds 25 to 30 kt, becoming 25 to 35 kt. Seas
9 to 13 ft. 
.FRI...NW winds 25 to 35 kt. Seas 10 to 17 ft. 
.FRI NIGHT...NW winds 25 to 35 kt. Seas 13 to 18 ft. 

$$

PZZ900-210445-
Cape Flattery to Cape Shoalwater between 150 NM and 250 NM
offshore-
848 AM PDT Mon May 20 2019

.TODAY...S to SE winds 20 to 30 kt. Seas 6 to 8 ft. 
.TONIGHT...E to SE winds 15 to 25 kt, becoming N to NE 10 to
20 kt. Seas 8 to 14 ft. 
.TUE...N to NW winds 15 to 25 kt. Seas 9 to 13 ft. 
.TUE NIGHT...NW winds 20 to 30 kt. Seas 9 to 11 ft. 
.WED...NW winds 20 to 30 kt. Seas 9 to 12 ft. 
.WED NIGHT...NW winds 20 to 30 kt. Seas 7 to 12 ft. 
.THU...NW winds 20 to 30 kt. Seas 7 to 12 ft. 
.THU NIGHT...N to NW winds 20 to 30 kt. Seas 6 to 11 ft. 
.FRI...N to NW winds 20 to 30 kt. Seas 10 to 14 ft. 
.FRI NIGHT...NW winds 20 to 30 kt. Seas 10 to 15 ft. 

$$

PZZ805-210445-
Cape Shoalwater to Cape Lookout between 60 NM and 150 NM
offshore-
848 AM PDT Mon May 20 2019

.TODAY...S winds 15 to 20 kt, increasing to 20 to 30 kt. Seas
7 to 9 ft. 
.TONIGHT...S to SE winds 15 to 25 kt, becoming SE 5 to 15 kt.
Seas 8 to 13 ft. Chance of rain. 
.TUE...E to NE winds 10 to 15 kt, becoming N 10 to 20 kt. Seas
11 to 15 ft. 
.TUE NIGHT...NW winds 20 to 25 kt. Seas 10 to 12 ft. 
.WED...N to NW winds 20 to 25 kt. Seas 10 to 12 ft. 
.WED NIGHT...N to NW winds 20 to 25 kt. Seas 11 to 13 ft. 
.THU...N to NW winds 20 to 25 kt. Seas 10 to 12 ft. 
.THU NIGHT...NW winds 20 to 25 kt. Seas 9 to 11 ft. 
.FRI...NW winds 20 to 30 kt. Seas 9 to 15 ft. 
.FRI NIGHT...NW winds 20 to 30 kt. Seas 11 to 16 ft. 

$$

PZZ905-210445-
Cape Shoalwater to Cape Lookout between 150 NM and 250 NM
offshore-
848 AM PDT Mon May 20 2019

.TODAY...S winds 20 to 30 kt. Seas 7 to 10 ft. Chance of rain
with VSBY 1 nm or less. 
.TONIGHT...S to SE winds 15 to 25 kt, becoming N. Seas 9 to
16 ft. 
.TUE...N to NW winds 20 to 30 kt. Seas 10 to 15 ft. 
.TUE NIGHT...NW winds 20 to 25 kt. Seas 9 to 12 ft. 
.WED...N to NW winds 20 to 25 kt. Seas 9 to 12 ft. 
.WED NIGHT...N to NW winds 20 to 30 kt. Seas 9 to 12 ft. 
.THU...NW winds 15 to 25 kt. Seas 7 to 12 ft. 
.THU NIGHT...N to NW winds 15 to 25 kt. Seas 7 to 10 ft. 
.FRI...N to NW winds 20 to 30 kt. Seas 9 to 13 ft. 
.FRI NIGHT...NW winds 20 to 30 kt. Seas 10 to 14 ft. 

$$

PZZ810-210445-
Cape Lookout to Florence, OR between 60 NM and 150 NM offshore-
848 AM PDT Mon May 20 2019

.TODAY...S winds 15 to 20 kt, increasing to 20 to 30 kt. Seas
7 to 10 ft. 
.TONIGHT...S winds 15 to 25 kt, becoming SE 5 to 15 kt. Seas
9 to 15 ft. Scattered showers and TSTMs with VSBY 1 nm or less. 
.TUE...N to NW winds 15 to 25 kt, becoming N to NE. Seas 12 to
16 ft. Scattered showers with VSBY 1 nm or less. 
.TUE NIGHT...N winds 20 to 25 kt. Seas 11 to 13 ft.
.WED...N winds 20 to 25 kt. Seas 11 to 12 ft. 
.WED NIGHT...N winds 20 to 25 kt. Seas 11 to 12 ft. 
.THU...N winds 20 to 25 kt. Seas 10 to 12 ft. 
.THU NIGHT...N to NW winds 20 to 25 kt. Seas 9 to 10 ft. 
.FRI...N to NW winds 15 to 25 kt. Seas 8 to 11 ft. 
.FRI NIGHT...N to NW winds 15 to 25 kt. Seas 10 to 13 ft. 

$$

PZZ910-210445-
Cape Lookout to Florence, OR between 150 NM and 250 NM offshore-
848 AM PDT Mon May 20 2019

.TODAY...S to SW winds 20 to 30 kt. Seas 7 to 13 ft. Chance of
rain. 
.TONIGHT...W to NW winds 20 to 30 kt. Seas 11 to 19 ft. Chance
of rain. 
.TUE...N to NW winds 20 to 30 kt. Seas 12 to 18 ft. 
.TUE NIGHT...N to NW winds 20 to 25 kt. Seas 10 to 14 ft. 
.WED...N winds 20 to 25 kt. Seas 9 to 12 ft. 
.WED NIGHT...N winds 20 to 25 kt. Seas 9 to 12 ft. 
.THU...N to NW winds 15 to 25 kt. Seas 8 to 12 ft. 
.THU NIGHT...NW winds 15 to 20 kt, becoming N 20 to 25 kt. Seas
7 to 10 ft. 
.FRI...N winds 20 to 25 kt. Seas 9 to 11 ft. 
.FRI NIGHT...N to NW winds 15 to 25 kt. Seas 9 to 12 ft. 

$$

PZZ815-210445-
Florence, OR to Point St. George between 60 NM and 150 NM
offshore-
848 AM PDT Mon May 20 2019

.TODAY...SW winds 10 to 20 kt, becoming S to SW 20 to 30 kt.
Seas 8 to 10 ft. 
.TONIGHT...W to SW winds 20 to 30 kt. Seas 9 to 13 ft, building
to 11 to 19 ft. Showers with VSBY 1 nm or less. 
.TUE...N to NW winds 20 to 30 kt. Seas 13 to 20 ft. 
.TUE NIGHT...N winds 20 to 30 kt. Seas 11 to 18 ft.
.WED...N winds 20 to 25 kt. Seas 11 to 13 ft. 
.WED NIGHT...N winds 20 to 25 kt. Seas 12 to 13 ft. 
.THU...N winds 20 to 30 kt. Seas 11 to 12 ft. 
.THU NIGHT...N winds 15 to 25 kt. Seas 9 to 12 ft.
.FRI...N winds 15 to 25 kt. Seas 8 to 10 ft. 
.FRI NIGHT...N winds 15 to 25 kt. Seas 9 to 11 ft. 

$$

PZZ915-210445-
Florence, OR to Point St. George between 150 NM and 250 NM
offshore-
848 AM PDT Mon May 20 2019

...GALE WARNING...

.TODAY...S to SW winds 20 to 30 kt, becoming W 25 to 35 kt. Seas
8 to 10 ft, building to 9 to 15 ft. Chance of rain. 
.TONIGHT...W winds 25 to 35 kt, becoming NW. Seas 13 to 22 ft.
Scattered showers. 
.TUE...NW winds 25 to 35 kt. Seas 14 to 22 ft. 
.TUE NIGHT...N to NW winds 20 to 30 kt. Seas 10 to 18 ft. 
.WED...N winds 20 to 25 kt. Seas 9 to 12 ft. 
.WED NIGHT...N winds 20 to 25 kt. Seas 9 to 12 ft. 
.THU...N winds 20 to 25 kt. Seas 8 to 12 ft. 
.THU NIGHT...N winds 15 to 25 kt. Seas 8 to 11 ft.
.FRI...N winds 15 to 25 kt. Seas 9 to 10 ft. 
.FRI NIGHT...N winds 15 to 25 kt. Seas 9 to 11 ft. 

$$

.Forecaster Kells. Ocean Prediction Center.
Last Update:15:49Z, 20 May 2019
Updates: Four times per day

FZPN26 KWBC 201549
OFFPZ6

Offshore Waters Forecast
NWS Ocean Prediction Center Washington DC
849 AM PDT Mon May 20 2019

California waters-
Inner waters from  60 nm to 150 nm offshore.
Outer waters from 150 nm to 250 nm offshore.

Seas given as significant wave height, which is the average
height of the highest 1/3 of the waves. Individual waves may be
more than twice the significant wave height.

PZZ899-210445-
849 AM PDT Mon May 20 2019

.SYNOPSIS FOR CALIFORNIA WATERS...A high pressure ridge will
build E over the waters today, then shift inland tonight while
weakening. A strong cold front will move SE over the northern and 
central waters later today and tonight, then continue across the
southern waters Tue and Tue night. High pressure will build W of 
the region tonight through Wed night, then drift W Thu into Fri
while weakening. A low pressure trough will develop along the
central California coast Tue night, continue strengthening Wed
into Thu while expanding N and S along the coast, then persist
through Fri night while slowly weakening. A second high will
build NW of the area Thu night into Fri, then weaken to the W of 
the northern waters late Fri and Fri night.

$$

PZZ820-210445-
Point St. George to Point Arena between 60 NM and 150 NM
offshore-
849 AM PDT Mon May 20 2019

...GALE WARNING...

.TODAY...W to SW winds 10 to 20 kt, becoming SW 20 to 30 kt.
Seas 8 to 9 ft. 
.TONIGHT...W winds 20 to 30 kt, increasing to 25 to 35 kt. Seas
8 to 13 ft, building to 11 to 19 ft. Scattered showers. 
.TUE...NW winds 25 to 35 kt. Seas 13 to 21 ft. Scattered
showers. 
.TUE NIGHT...N to NW winds 25 to 35 kt. Seas 13 to 19 ft. 
.WED...N winds 25 to 35 kt. Seas 11 to 17 ft. 
.WED NIGHT...N winds 25 to 35 kt. Seas 12 to 17 ft. 
.THU...N winds 25 to 35 kt. Seas 11 to 17 ft. 
.THU NIGHT...N winds 20 to 30 kt. Seas 10 to 14 ft. 
.FRI...N winds 20 to 25 kt. Seas 8 to 12 ft. 
.FRI NIGHT...N winds 20 to 30 kt. Seas 9 to 12 ft. 

$$

PZZ920-210445-
Point St. George to Point Arena between 150 NM and 250 NM
offshore-
849 AM PDT Mon May 20 2019

...GALE WARNING...

.TODAY...SW winds 20 to 30 kt, becoming W. Seas 8 to 13 ft.
Chance of rain. 
.TONIGHT...W winds 25 to 35 kt, becoming NW. Seas 13 to 22 ft. 
.TUE...NW winds 30 to 35 kt. Seas 17 to 22 ft. 
.TUE NIGHT...N to NW winds 30 to 35 kt, becoming N 20 to 30 kt.
Seas 12 to 19 ft. 
.WED...N winds 20 to 30 kt. Seas 10 to 16 ft. 
.WED NIGHT...N winds 25 to 30 kt. Seas 10 to 15 ft. 
.THU...N winds 20 to 30 kt. Seas 10 to 16 ft. 
.THU NIGHT...N winds 20 to 30 kt. Seas 8 to 14 ft.
.FRI...N winds 15 to 25 kt. Seas 9 to 11 ft. 
.FRI NIGHT...N winds 15 to 25 kt. Seas 8 to 10 ft. 

$$

PZZ825-210445-
Point Arena to Pigeon Point between 60 NM and 150 NM offshore-
849 AM PDT Mon May 20 2019

...GALE WARNING...

.TODAY...W to NW winds 10 to 15 kt, becoming W to SW 15 to
25 kt. Seas 8 to 11 ft. 
.TONIGHT...W to SW winds 20 to 30 kt. Seas 7 to 13 ft. Chance of
rain. 
.TUE...NW winds 25 to 30 kt. Seas 12 to 19 ft. 
.TUE NIGHT...N to NW winds 25 to 35 kt. Seas 15 to 19 ft. 
.WED...N winds 25 to 35 kt. Seas 14 to 18 ft. 
.WED NIGHT...N winds 30 to 35 kt. Seas 14 to 18 ft. 
.THU...N winds 25 to 35 kt, diminishing to 20 to 30 kt. Seas
13 to 17 ft. 
.THU NIGHT...N winds 20 to 30 kt. Seas 10 to 14 ft. 
.FRI...N winds 15 to 25 kt. Seas 8 to 12 ft. 
.FRI NIGHT...N winds 15 to 25 kt. Seas 8 to 11 ft. 

$$

PZZ925-210445-
Point Arena to Pigeon Point between 150 NM and 250 NM offshore-
849 AM PDT Mon May 20 2019

...GALE WARNING...

.TODAY...W to SW winds 15 to 25 kt. Seas 8 to 10 ft. 
.TONIGHT...W to NW winds 20 to 30 kt. Seas 8 to 11 ft, building
to 11 to 18 ft. 
.TUE...NW winds 25 to 30 kt. Seas 11 to 19 ft. 
.TUE NIGHT...N to NW winds 25 to 35 kt. Seas 15 to 18 ft. 
.WED...N winds 25 to 30 kt. Seas 12 to 17 ft. 
.WED NIGHT...N winds 25 to 30 kt. Seas 12 to 16 ft. 
.THU...N winds 25 to 30 kt. Seas 13 to 16 ft. 
.THU NIGHT...N winds 20 to 25 kt. Seas 11 to 14 ft. 
.FRI...N winds 15 to 25 kt. Seas 9 to 12 ft. 
.FRI NIGHT...N winds 15 to 20 kt. Seas 8 to 10 ft. 

$$

PZZ830-210445-
Pigeon Point to Point Piedras Blancas between 60 NM and 150 NM
offshore-
849 AM PDT Mon May 20 2019

...GALE WARNING...

.TODAY...W to NW winds 15 to 20 kt. Seas 9 to 12 ft. 
.TONIGHT...W winds 15 to 20 kt, becoming NW 15 to 25 kt. Seas
7 to 11 ft. 
.TUE...NW winds 20 to 30 kt. Seas 10 to 17 ft. 
.TUE NIGHT...NW winds 25 to 35 kt. Seas 14 to 19 ft. Scattered
showers. 
.WED...N to NW winds 25 to 35 kt. Seas 16 to 19 ft. 
.WED NIGHT...NW winds 25 to 35 kt. Seas 15 to 18 ft. 
.THU...N to NW winds 20 to 30 kt. Seas 11 to 17 ft. 
.THU NIGHT...N winds 15 to 25 kt. Seas 10 to 14 ft. 
.FRI...N to NW winds 10 to 20 kt. Seas 8 to 11 ft. 
.FRI NIGHT...N to NW winds 10 to 20 kt. Seas 7 to 10 ft. 

$$

PZZ930-210445-
Pigeon Point to Point Piedras Blancas between 150 NM and 250 NM
offshore-
849 AM PDT Mon May 20 2019

...GALE WARNING...

.TODAY...NW winds 15 to 20 kt, becoming W. Seas 8 to 12 ft. 
.TONIGHT...W to NW winds 15 to 25 kt. Seas 8 to 11 ft. 
.TUE...NW winds 25 to 30 kt. Seas 10 to 17 ft. 
.TUE NIGHT...N to NW winds 25 to 35 kt. Seas 16 to 19 ft. 
.WED...N winds 25 to 30 kt, becoming NW. Seas 13 to 19 ft. 
.WED NIGHT...N winds 25 to 30 kt. Seas 13 to 17 ft. 
.THU...N winds 20 to 30 kt. Seas 14 to 16 ft. 
.THU NIGHT...N winds 15 to 25 kt. Seas 11 to 14 ft. 
.FRI...N winds 15 to 25 kt. Seas 9 to 12 ft. 
.FRI NIGHT...N winds 15 to 20 kt. Seas 8 to 10 ft. 

$$

PZZ835-210445-
Point Piedras Blancas to Santa Cruz Island, CA between 60 NM and
150 NM offshore-
849 AM PDT Mon May 20 2019

.TODAY...NW winds 15 to 25 kt. Seas 10 to 14 ft. 
.TONIGHT...W to NW winds 15 to 25 kt. Seas 9 to 11 ft. 
.TUE...NW winds 20 to 25 kt. Seas 9 to 13 ft. 
.TUE NIGHT...NW winds 25 to 30 kt. Seas 11 to 19 ft. 
.WED...NW winds 20 to 30 kt. Seas 15 to 19 ft.
.WED NIGHT...NW winds 20 to 30 kt. Seas 12 to 17 ft. 
.THU...N to NW winds 15 to 25 kt. Seas 9 to 16 ft. 
.THU NIGHT...N to NW winds 10 to 20 kt, becoming N 5 to 15 kt.
Seas 9 to 13 ft. 
.FRI...N to NE winds 5 to 15 kt, becoming variable. Seas 8 to
10 ft. 
.FRI NIGHT...N to NW winds 5 to 15 kt, increasing to 10 to
20 kt. Seas 6 to 8 ft. 

$$

PZZ935-210445-
Point Piedras Blancas to Santa Cruz Island, CA between 150 NM
and 250 NM offshore-
849 AM PDT Mon May 20 2019

.TODAY...NW winds 15 to 25 kt. Seas 9 to 13 ft. 
.TONIGHT...W to NW winds 15 to 25 kt. Seas 8 to 11 ft. 
.TUE...NW winds 20 to 25 kt. Seas 8 to 10 ft, building to 9 to
16 ft. 
.TUE NIGHT...NW winds 25 to 30 kt. Seas 10 to 18 ft. 
.WED...N to NW winds 25 to 30 kt. Seas 15 to 19 ft. 
.WED NIGHT...N to NW winds 25 to 30 kt. Seas 14 to 17 ft. 
.THU...N to NW winds 20 to 30 kt. Seas 12 to 16 ft. 
.THU NIGHT...N to NW winds 15 to 25 kt. Seas 10 to 14 ft. 
.FRI...N winds 10 to 20 kt. Seas 8 to 12 ft. 
.FRI NIGHT...N winds 10 to 20 kt. Seas 7 to 10 ft. 

$$

PZZ840-210445-
Santa Cruz Island, CA to San Clemente Island, CA between 60 NM
and 150 NM offshore-
849 AM PDT Mon May 20 2019

.TODAY...NW winds 20 to 25 kt. Seas 9 to 14 ft. 
.TONIGHT...NW winds 20 to 30 kt. Seas 9 to 12 ft. 
.TUE...NW winds 20 to 30 kt. Seas 8 to 12 ft. 
.TUE NIGHT...NW winds 20 to 30 kt. Seas 9 to 16 ft. 
.WED...NW winds 20 to 30 kt. Seas 11 to 18 ft.
.WED NIGHT...NW winds 15 to 25 kt. Seas 10 to 17 ft. 
.THU...NW winds 10 to 20 kt, becoming W to NW 5 to 15 kt. Seas
8 to 14 ft. 
.THU NIGHT...Variable winds 5 to 15 kt, diminishing to less than
10 kt. Seas 7 to 12 ft. 
.FRI...Variable winds less than 10 kt. Seas 6 to 10 ft. 
.FRI NIGHT...W to NW winds less than 10 kt, becoming NW. Seas
4 to 8 ft. 

$$

PZZ940-210445-
Santa Cruz Island, CA to 120W between 150 NM and 250 NM offshore-
849 AM PDT Mon May 20 2019

.TODAY...NW winds 15 to 25 kt. Seas 10 to 13 ft. 
.TONIGHT...NW winds 15 to 25 kt. Seas 8 to 12 ft. 
.TUE...NW winds 15 to 25 kt. Seas 8 to 10 ft. 
.TUE NIGHT...NW winds 20 to 30 kt. Seas 9 to 16 ft. 
.WED...NW winds 20 to 30 kt. Seas 11 to 18 ft.
.WED NIGHT...NW winds 20 to 30 kt. Seas 13 to 17 ft. 
.THU...NW winds 15 to 25 kt. Seas 11 to 14 ft. 
.THU NIGHT...N to NW winds 10 to 20 kt. Seas 9 to 13 ft. 
.FRI...N to NW winds 5 to 15 kt, becoming variable. Seas 8 to
11 ft. 
.FRI NIGHT...N to NW winds 5 to 15 kt. Seas 7 to 9 ft. 

$$

PZZ945-210445-
San Clemente Island, CA to Guadalupe Island from 60 NM offshore
west to 120W-
849 AM PDT Mon May 20 2019

.TODAY...NW winds 15 to 25 kt. Seas 8 to 13 ft. 
.TONIGHT...NW winds 15 to 25 kt. Seas 7 to 12 ft. 
.TUE...NW winds 15 to 25 kt. Seas 6 to 11 ft. 
.TUE NIGHT...NW winds 15 to 25 kt. Seas 7 to 12 ft. 
.WED...NW winds 15 to 25 kt. Seas 9 to 16 ft. 
.WED NIGHT...NW winds 10 to 20 kt, becoming 10 to 15 kt. Seas
9 to 15 ft. 
.THU...W to NW winds 5 to 15 kt, becoming W 5 to 10 kt. Seas
7 to 13 ft. 
.THU NIGHT...W to NW winds less than 10 kt. Seas 6 to 11 ft. 
.FRI...W to NW winds less than 10 kt, becoming variable. Seas
5 to 9 ft. 
.FRI NIGHT...W to NW winds 5 to 10 kt. Seas 4 to 8 ft. 

$$

.Forecaster Kells. Ocean Prediction Center.
Last Update:15:51Z, 20 May 2019
Updates: Four times per day

FZPN01 KWBC 201546
HSFEP1

HIGH SEAS FORECAST 
NWS OCEAN PREDICTION CENTER WASHINGTON DC 
1630 UTC MON MAY 20 2019 

SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS 

SEAS GIVEN AS SIGNIFICANT WAVE HEIGHT...WHICH IS THE AVERAGE 
HEIGHT OF THE HIGHEST 1/3 OF THE WAVES. INDIVIDUAL WAVES MAY 
BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT. 

ONLY YOU KNOW THE WEATHER AT YOUR POSITION. REPORT IT TO THE 
NATIONAL WEATHER SERVICE. EMAIL US AT 
VOSOPS@NOAA.GOV(LOWERCASE). 

SECURITE 

PACIFIC N OF 30N AND S OF 67N E OF A LINE FROM BERING STRAIT 
TO 50N 160E 

SYNOPSIS VALID 1200 UTC MAY 20. 
24 HOUR FORECAST VALID 1200 UTC MAY 21. 
48 HOUR FORECAST VALID 1200 UTC MAY 22. 

.WARNINGS.

...STORM WARNING... 
.LOW 32N170W 1009 MB MOVING NE 30 KT. OVER FORECAST WATERS S OF 
A LINE FROM 39N158W TO 32N170E WINDS 20 TO 30 KT. SEAS TO 10 FT. 
.24 HOUR FORECAST LOW 42N159W 999 MB. WITHIN 540 NM NE 
QUADRANT...AND 360 NM E OF A LINE FROM LOW TO 30N164E WINDS 25 
TO 35 KT. SEAS 9 TO 13 FT.  
.48 HOUR FORECAST LOW 52N157W 984 MB. WITHIN 180 NM SE AND S 
QUADRANTS WINDS 40 TO 50 KT. SEAS 16 TO 24 FT. ELSEWHERE FROM 
46N TO 57N BETWEEN 144W AND 163W WINDS 25 TO 40 KT. SEAS 8 TO 16 
FT. 

...GALE WARNING... 
.LOW 46N137W 990 MB MOVING SE 25 KT. WITHIN 300 NM SW QUADRANT 
WINDS 35 TO 45 KT. SEAS 14 TO 28 FT. ELSEWHERE WITHIN 540 NM S 
AND 480 NM SW QUADRANTS WINDS 25 TO 35 KT. SEAS 9 TO 18 FT. 
.24 HOUR FORECAST LOW 44N125W 1000 MB. WITHIN 540 NM SW QUADRANT 
WINDS 25 TO 40 KT. SEAS 14 TO 23 FT. ELSEWHERE OVER FORECAST 
WATERS WITHIN 660 NM SW SEMICIRCLE WINDS 20 TO 30 KT. SEAS 8 TO 
16 FT. 
.48 HOUR FORECAST LOW WELL E OF AREA. FROM 31N TO 50N E OF 128W 
WINDS 25 TO 40 KT. SEAS 12 TO 18 FT. ELSEWHERE FROM 30N TO 56N E 
OF 136W WINDS 20 TO 30 KT. SEAS 8 TO 14 FT. 

...GALE WARNING... 
.LOW 53N175E 1000 MB MOVING SE 25 KT. OVER FORECAST WATERS 
WITHIN 480 NM SE AND 780 NM SW QUADRANTS WINDS 20 TO 30 KT. SEAS 
TO 10 FT. 
.24 HOUR FORECAST LOW 48N180W 997 MB. BETWEEN 300 NM AND 780 NM 
SW QUADRANTS WINDS 25 TO 35 KT. SEAS 9 TO 14 FT. ELSEWHERE FROM 
33N TO 56N BETWEEN 171W AND 164E WINDS 20 TO 30 KT. SEAS 8 TO 12 
FT. 
.48 HOUR FORECAST LOW 42N172W 992 MB. WITHIN 240 NM N QUADRANT 
WINDS 25 TO 35 KT. SEAS 9 TO 13 FT. ELSEWHERE FROM 30N TO 46N 
BETWEEN 162W AND 170E WINDS 20 TO 30 KT. SEAS 8 TO 16 
FT...HIGHEST NEAR 38N177E. 

.SYNOPSIS AND FORECAST. 

.OVER FORECAST WATERS S OF 37N E OF 126W WINDS TO 25 KT. SEAS 8 
TO 14 FT.
.24 HOUR FORECAST S OF 35N E OF 121W WINDS TO 25 KT. SEAS TO 10 
FT.
.48 HOUR FORECAST CONDITIONS AS DESCRIBED IN FIRST GALE WARNING.

.LOW 53N154W 1002 MB MOVING NE 20 KT. WITHIN 180 NM S QUADRANT 
WINDS 20 TO 30 KT. SEAS TO 10 FT.
.24 HOUR FORECAST CONDITIONS DIMINISHED.

.DENSE FOG. VSBY OCCASIONALLY LESS THAN 1 NM WITHIN 90 NM OF 
35N165W AND WITHIN 90 NM OF 45N160E. 
.24 HOUR FORECAST DENSE FOG FROM 35N TO 44N BETWEEN 147W AND 
160W...AND WITHIN 120 NM OF 45N160E. 
.48 HOUR FORECAST DENSE FOG WITHIN 360 NM E OF A LINE FROM 
52N150W TO 44N149W TO 33N155W. 

.HIGH 31N147W 1025 MB MOVING NE 10 KT. 
.24 HOUR FORECAST HIGH 37N140W 1028 MB. 
.48 HOUR FORECAST HIGH 40N138W 1032 MB. 

.HIGH 38N163E 1034 MB DRIFTING SE. 
.24 HOUR FORECAST HIGH 37N163E 1029 MB. 
.48 HOUR FORECAST HIGH DISSIPATED. 

.HIGH 54N143W 1010 MB MOVING NW 15 KT. 
.24 HOUR FORECAST HIGH DISSIPATED.

.48 HOUR FORECAST NEW HIGH 52N166E 1031 MB. 

.FORECASTER KREKELER. OCEAN PREDICTION CENTER.

NATIONAL HURRICANE CENTER MIAMI FL

E PACIFIC FROM THE EQUATOR TO 30N E OF 140W AND 03.4S TO THE
EQUATOR E OF 120W

SYNOPSIS VALID 1200 UTC MON MAY 20.
24 HOUR FORECAST VALID 1200 UTC TUE MAY 21.
48 HOUR FORECAST VALID 1200 UTC WED MAY 22.

.WARNINGS.

.NONE.

.SYNOPSIS AND FORECAST.

.N OF LINE FROM 20N140W TO 20N131W TO 30N120W WINDS 20 KT OR 
LESS. SEAS 8 TO 11 FT IN NW SWELL. FROM 10N TO 20N W OF 128W 
WINDS 20 KT OR LESS. SEAS 8 FT IN MIXED SWELL.
.24 HOUR FORECAST WITHIN AREA BOUNDED BY 24N140W TO 30N129W TO 
30N116W TO 20N108W TO 08N118W TO 09N140W TO 24N140W WINDS 20 KT 
OR LESS. SEAS 8 TO 10 FT IN MIXED SWELL.
.48 HOUR FORECAST N OF 28N BETWEEN 117W AND 130W NW TO N WINDS 
20 TO 25 KT. SEAS 9 TO 12 FT. ELSEWHERE WITHIN AREA BOUNDED BY 
27N140W TO 30N135W TO 30N116W TO 20N108W TO 13N108W TO 08N140W 
TO 27N140W WINDS 20 KT OR LESS. SEAS 8 TO 10 FT IN MIXED SWELL. 

.GULF OF CALIFORNIA N OF 30N W TO NW WINDS 20 TO 25 KT. SEAS 
LESS THAN 8 FT. 
.12 HOUR FORECAST GULF OF CALIFORNIA WINDS 20 KT OR LESS. SEAS 
LESS THAN 8 FT. 
.24 HOUR FORECAST LITTLE CHANGE. 
.42 HOUR FORECAST FROM 29N TO 31N W WINDS 20 TO 25 KT. SEAS LESS 
THAN 8 FT.
.48 HOUR FORECAST LITTLE CHANGE. 

.FROM 01N TO 10N BETWEEN 91W AND 108W WINDS 20 KT OR LESS. SEAS 
TO 8 FT IN SW SWELL. S OF 05N BETWEEN 81W AND 87W WINDS 20 KT OR 
LESS. SEAS 8 FT IN SW SWELL.
.24 HOUR FORECAST S OF 08N BETWEEN 91W AND 107W WINDS 20 KT OR 
LESS. SEAS 8 FT IN SW SWELL. 
.48 HOUR FORECAST S OF 09S BETWEEN 90W AND 106W WINDS 20 KT OR 
LESS. SEAS 8 FT IN SW SWELL.

.REMAINDER OF AREA WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT.

CONVECTION VALID AT 1500 UTC MON MAY 20...

.INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...
MONSOON TROUGH FROM 08N78W TO 08N82W TO 10N88W TO 10N105W TO 
07N123W. ITCZ FROM 07N123W TO 07N126W TO 05N140W. SCATTERED 
MODERATE ISOLATED STRONG FROM 04N TO 10N BETWEEN 80W AND 94W.
SCATTERED MODERATE ISOLATED STRONG FROM 08N TO 102W BETWEEN 100W 
AND 105W. SCATTERED MODERATE ISOLATED STRONG WITHIN 90 NM OF 
MONSOON TROUGH BETWEEN 110W AND 123W. SCATTERED MODERATE 
ISOLATED STRONG WITHIN 90 NM SOUTH OF ITCZ BETWEEN 123W AND 
135W. SCATTERED MODERATE ISOLATED STRONG FROM 03N TO 07N W OF 
135W. 

$$
.FORECASTER AL. NATIONAL HURRICANE CENTER.
Last Update:15:47Z, 20 May 2019
Updates: Four times per day