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Pacific Text Briefing Package

[Printable Version]

AGPN40 KWNM 232105
MIMPAC

Marine Weather Discussion for N Pacific Ocean
NWS Ocean Prediction Center Washington DC
105 PM PST Fri Feb 23 2018

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

1730Z ASCAT pass indicates gales have diminished along the 
California coast. 18Z surface analysis shows a cold front moving
SE through the northern waters tonight. Gales are likely with 
the cold air advection behind the front. The pattern remains
generally unchanged through much of the forecast period with a
ridge of high pressure to the west and several shortwaves passing
SE through the northern and central waters. The patten begins to
change slightly very late in the period as the ridge of high
pressure begins to erode and an area of low pressure moves NE
into the PZ5 waters.

12Z model agreement is pretty good throughout the period, with
some differences later in the period. Can expect several time
periods of gale force winds with frontal passages expected as
shortwaves move across the waters. Will use the 10m/30m stability
tool to populate the forecast through Tue 12Z. Then, will blend
the 10m/30m winds with the UKMET through 00Z Thu to average the
winds speeds in the forecast. Finally, will use a GFS/ECMWF blend
from 00Z Thu to the end of the forecast as these have very good
agreement this late in the period. The ECMWF is quite a bit
stronger, but blending the 10m GFS with it creates quite a
reasonable solution. 


.SEAS...Will follow much the same reasoning as the winds. WW3
will be utilized through 00Z Thu; however, seas will be boosted
in areas of gale force winds by 10 percent. After 00Z Thu, will
use a 50/50 blend of the WW3 and the WAM.


.EXTRATROPICAL STORM SURGE GUIDANCE...N/A


.WARNINGS...Preliminary.

.PZ5 Washington/Oregon Waters...
.PZZ800...Inner Waters from Cape Flattery to Cape Shoalwater...
     Gale tonight into Sunday. 
.PZZ900...Outer Waters from Cape Flattery to Cape Shoalwater...
     Gale tonight into Sunday. 
.PZZ805...Inner Waters from Cape Shoalwater to Cape Lookout...
     Gale Saturday.
.PZZ905...Outer Waters from Cape Shoalwater to Cape Lookout...
     Gale Saturday.
     Gale Sunday.

.PZ6 California Waters...
.PZZ825...Inner Waters from Point Arena to Pigeon Point...
     Gale Possible Monday night.
.PZZ830...Inner Waters from Pigeon Point to Point Piedras Blancas...
     Gale Possible Monday night.
.PZZ930...Outer Waters from Pigeon Point to Point Piedras Blancas...
     Gale Possible Monday night.
.PZZ835...Inner Waters from Point Piedras Blancas to Santa Cruz Island, CA...
     Gale Possible Monday night into Tuesday. 
.PZZ935...Outer Waters from Point Piedras Blancas to Santa Cruz Island, CA...
     Gale Possible Monday night.

$$

.Forecaster Sommerville. Ocean Prediction Center.
Last Update:21:06Z, 23 February 2018
Updates: Four times per day

FZPN25 KWBC 232139
OFFPZ5

Offshore Waters Forecast
NWS Ocean Prediction Center Washington DC
139 PM PST Fri Feb 23 2018

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.

PZZ898-241015-
139 PM PST Fri Feb 23 2018

.SYNOPSIS FOR WASHINGTON AND OREGON WATERS...A cold front will
continue moving SE through the waters tonight, followed by 
another cold front Sat night into Sun. An associated low pressure
area will move across the NE portion while dissipating Sun 
night. A high pressure ridge will build E over the waters late 
Mon. A third cold front will approach the northern waters Mon 
night, then move SE over the waters late Tue and Tue night. An 
area of low pressure will approach from the W and move quickly 
across the waters Wed night. 

$$

PZZ800-241015-
Cape Flattery to Cape Shoalwater between 60 nm and 150 nm
offshore-
139 PM PST Fri Feb 23 2018

...GALE WARNING...

.TONIGHT...W to NW winds 20 to 30 kt, increasing to 25 to 35 kt.
Seas 8 to 11 ft, building to 11 to 18 ft. Chance of rain. 
.SAT...NW winds 25 to 35 kt, diminishing to 20 to 30 kt. Seas
15 to 20 ft. Chance of rain. Chance of showers.
.SAT NIGHT...W winds 20 to 25 kt, increasing to 25 to 35 kt.
Seas 13 to 18 ft. Chance of showers. 
.SUN...W to NW winds 25 to 35 kt. Seas 15 to 21 ft. Chance of
rain. 
.SUN NIGHT...NW winds 15 to 25 kt. Seas 17 to 21 ft. 
.MON...NW winds 15 to 20 kt. Seas 14 to 19 ft. 
.MON NIGHT...W to SW winds 20 to 30 kt. Seas 11 to 14 ft. 
.TUE...W to NW winds 20 to 30 kt. Seas 12 to 15 ft. 
.TUE NIGHT...NW winds 20 to 25 kt. Seas 14 to 21 ft. 
.WED...NW winds 20 to 25 kt, becoming W 15 to 20 kt. Seas 18 to
21 ft. 
.WED NIGHT...SW winds 10 to 15 kt, becoming S 10 to 20 kt. Seas
12 to 16 ft. 

$$

PZZ900-241015-
Cape Flattery to Cape Shoalwater between 150 nm and 250 nm
offshore-
139 PM PST Fri Feb 23 2018

...GALE WARNING...

.TONIGHT...W to NW winds 20 to 30 kt, becoming NW 30 to 35 kt.
Seas 8 to 13 ft, building to 12 to 20 ft. 
.SAT...NW winds 25 to 35 kt, becoming W to NW 20 to 30 kt. Seas
15 to 21 ft. Chance of rain. 
.SAT NIGHT...W winds 25 to 35 kt. Seas 14 to 20 ft.
.SUN...W to NW winds 30 to 35 kt. Seas 17 to 24 ft. Chance of
rain. 
.SUN NIGHT...NW winds 25 to 30 kt. Seas 19 to 24 ft. 
.MON...W to NW winds 15 to 25 kt. Seas 14 to 19 ft. 
.MON NIGHT...SW winds 20 to 30 kt, becoming W. Seas 12 to 14 ft.
.TUE...NW winds 25 to 30 kt. Seas 12 to 20 ft. 
.TUE NIGHT...NW winds 20 to 30 kt. Seas 16 to 23 ft. 
.WED...NW winds 15 to 25 kt, becoming W to SW 10 to 20 kt. Seas
16 to 21 ft. 
.WED NIGHT...SW winds 10 to 15 kt, becoming W 15 to 20 kt. Seas
12 to 14 ft. 

$$

PZZ805-241015-
Cape Shoalwater to Cape Lookout between 60 nm and 150 nm
offshore-
139 PM PST Fri Feb 23 2018

...GALE WARNING...

.TONIGHT...W winds 20 to 25 kt, becoming NW, then, becoming W
20 to 30 kt. Seas 8 to 14 ft. Chance of rain.
.SAT...NW winds 30 to 35 kt, diminishing to 20 to 30 kt. Seas
12 to 19 ft. Chance of rain. 
.SAT NIGHT...W winds 20 to 30 kt. Seas 13 to 16 ft. Chance of
showers. 
.SUN...W winds 25 to 30 kt. Seas 14 to 20 ft. Chance of rain. 
.SUN NIGHT...NW winds 20 to 30 kt. Seas 18 to 20 ft. 
.MON...NW winds 15 to 25 kt. Seas 15 to 19 ft. 
.MON NIGHT...W to NW winds 10 to 15 kt, becoming SW 15 to 25 kt.
Seas 12 to 15 ft. 
.TUE...W to NW winds 20 to 30 kt. Seas 12 to 14 ft. 
.TUE NIGHT...NW winds 20 to 25 kt. Seas 12 to 20 ft. 
.WED...NW winds 15 to 25 kt, becoming W to SW 15 to 20 kt. Seas
16 to 21 ft. 
.WED NIGHT...SW winds 10 to 15 kt, becoming S 10 to 20 kt. Seas
12 to 14 ft. 

$$

PZZ905-241015-
Cape Shoalwater to Cape Lookout between 150 nm and 250 nm
offshore-
139 PM PST Fri Feb 23 2018

...GALE WARNING...

.TONIGHT...W winds 20 to 25 kt, becoming NW 20 to 30 kt. Seas
7 to 10 ft, building to 9 to 16 ft. 
.SAT...NW winds 25 to 35 kt, diminishing to 20 to 30 kt. Seas
12 to 18 ft. 
.SAT NIGHT...W winds 20 to 30 kt. Seas 13 to 16 ft.
.SUN...W winds 25 to 30 kt, becoming W to NW 30 to 35 kt. Seas
14 to 22 ft. Chance of rain. 
.SUN NIGHT...NW winds 25 to 30 kt. Seas 18 to 23 ft. 
.MON...NW winds 15 to 25 kt. Seas 15 to 19 ft. 
.MON NIGHT...W to SW winds 15 to 25 kt. Seas 12 to 15 ft. 
.TUE...W to NW winds 20 to 30 kt. Seas 12 to 16 ft. 
.TUE NIGHT...NW winds 20 to 30 kt. Seas 14 to 21 ft. 
.WED...NW winds 10 to 20 kt, becoming W to SW. Seas 16 to 21 ft.
.WED NIGHT...SW winds 10 to 15 kt, becoming NW. Seas 12 to
14 ft. 

$$

PZZ810-241015-
Cape Lookout to Florence, OR between 60 nm and 150 nm offshore-
139 PM PST Fri Feb 23 2018

.TONIGHT...W winds 15 to 20 kt, increasing to 20 to 30 kt. Seas
7 to 10 ft. Chance of rain. 
.SAT...NW winds 20 to 30 kt. Seas 12 to 16 ft. Chance of rain. 
.SAT NIGHT...W winds 15 to 25 kt. Seas 10 to 15 ft. Chance of
showers. 
.SUN...W winds 25 to 30 kt. Seas 13 to 17 ft. Chance of rain. 
.SUN NIGHT...NW winds 20 to 30 kt. Seas 16 to 20 ft. 
.MON...NW winds 15 to 25 kt. Seas 15 to 19 ft. 
.MON NIGHT...NW winds 10 to 15 kt, becoming W to SW 10 to 20 kt.
Seas 12 to 15 ft. 
.TUE...W to SW winds 15 to 25 kt, becoming NW. Seas 10 to 13 ft.
.TUE NIGHT...NW winds 15 to 25 kt. Seas 11 to 16 ft. 
.WED...NW winds 15 to 20 kt, becoming W to SW 10 to 20 kt. Seas
15 to 19 ft. 
.WED NIGHT...S to SW winds 15 to 25 kt. Seas 13 to 15 ft. 

$$

PZZ910-241015-
Cape Lookout to Florence, OR between 150 nm and 250 nm offshore-
139 PM PST Fri Feb 23 2018

.TONIGHT...W to NW winds 20 to 30 kt. Seas 7 to 10 ft. 
.SAT...NW winds 20 to 30 kt. Seas 11 to 15 ft. 
.SAT NIGHT...W winds 15 to 25 kt. Seas 12 to 15 ft.
.SUN...W winds 25 to 30 kt. Seas 13 to 17 ft. 
.SUN NIGHT...NW winds 20 to 30 kt. Seas 16 to 21 ft. 
.MON...NW winds 15 to 25 kt. Seas 16 to 20 ft. 
.MON NIGHT...W to SW winds 15 to 20 kt. Seas 12 to 15 ft. 
.TUE...W to NW winds 20 to 30 kt. Seas 11 to 14 ft. 
.TUE NIGHT...NW winds 20 to 25 kt. Seas 12 to 19 ft. 
.WED...NW winds 10 to 20 kt, becoming W to SW 10 to 15 kt. Seas
16 to 19 ft. 
.WED NIGHT...S to SW winds 10 to 20 kt, becoming W to NW. Seas
13 to 14 ft. 

$$

PZZ815-241015-
Florence, OR to Point St. George between 60 nm and 150 nm
offshore-
139 PM PST Fri Feb 23 2018

.TONIGHT...W winds 5 to 15 kt, becoming W to NW 15 to 25 kt.
Seas 7 to 9 ft. Chance of rain. 
.SAT...NW winds 20 to 30 kt. Seas 9 to 14 ft. Chance of rain. 
.SAT NIGHT...W to NW winds 15 to 25 kt. Seas 10 to 14 ft. Chance
of showers. 
.SUN...W winds 15 to 25 kt. Seas 11 to 14 ft. 
.SUN NIGHT...W to NW winds 20 to 30 kt. Seas 12 to 19 ft. 
.MON...N to NW winds 15 to 25 kt. Seas 16 to 19 ft. 
.MON NIGHT...N to NW winds 10 to 20 kt, becoming W to SW. Seas
12 to 16 ft. 
.TUE...W winds 10 to 20 kt, becoming NW 15 to 25 kt. Seas 9 to
12 ft. 
.TUE NIGHT...NW winds 15 to 25 kt. Seas 10 to 15 ft. 
.WED...NW winds 15 to 20 kt, becoming W 10 to 15 kt. Seas 11 to
18 ft. 
.WED NIGHT...S to SW winds 15 to 25 kt. Seas 12 to 14 ft. 

$$

PZZ915-241015-
Florence, OR to Point St. George between 150 nm and 250 nm
offshore-
139 PM PST Fri Feb 23 2018

.TONIGHT...W to NW winds 15 to 25 kt. Seas 7 to 9 ft. 
.SAT...NW winds 20 to 30 kt. Seas 9 to 13 ft. 
.SAT NIGHT...W winds 15 to 25 kt. Seas 9 to 14 ft. 
.SUN...W winds 20 to 30 kt. Seas 11 to 15 ft. 
.SUN NIGHT...NW winds 20 to 30 kt. Seas 13 to 20 ft. 
.MON...N to NW winds 15 to 25 kt. Seas 16 to 20 ft. 
.MON NIGHT...N to NW winds 15 to 20 kt, becoming W 10 to 20 kt.
Seas 12 to 16 ft. 
.TUE...W to NW winds 15 to 25 kt. Seas 11 to 12 ft. 
.TUE NIGHT...NW winds 15 to 25 kt. Seas 11 to 17 ft. 
.WED...NW winds 15 to 20 kt, becoming W 10 to 15 kt. Seas 12 to
18 ft. 
.WED NIGHT...SW winds 10 to 20 kt, becoming W 20 to 30 kt. Seas
13 to 15 ft. 

$$

.Forecaster Sommerville. Ocean Prediction Center.
Last Update:21:41Z, 23 February 2018
Updates: Four times per day

FZPN26 KWBC 232139
OFFPZ6

Offshore Waters Forecast
NWS Ocean Prediction Center Washington DC
139 PM PST Fri Feb 23 2018

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.

PZZ899-241030-
139 PM PST Fri Feb 23 2018

.SYNOPSIS FOR CALIFORNIA WATERS...A weak low pressure trough will
remain along the California coast tonight, then diminish Sat as 
a high pressure ridge builds E into the central waters. A weak 
cold front will move S into the northern waters Sat, then 
dissipate Sat night. Another cold front will move S through the 
waters Sun and Sun night before dissipating Mon. A trough will 
re-form along the coast Mon, strengthen Mon night, persist 
through Tue night, then dissipate Wed. A high pressure ridge will
build E over the southern waters Wed and Wed night.

$$

PZZ820-241030-
Point St. George to Point Arena between 60 nm and 150 nm
offshore-
139 PM PST Fri Feb 23 2018

.TONIGHT...N to NW winds 15 to 25 kt. Seas 6 to 10 ft. 
.SAT...NW winds 15 to 25 kt. Seas 6 to 10 ft. 
.SAT NIGHT...N to NW winds 10 to 20 kt. Seas 8 to 12 ft. 
.SUN...W to NW winds 10 to 20 kt. Seas 9 to 13 ft. 
.SUN NIGHT...W winds 15 to 25 kt, becoming NW 20 to 30 kt.
Seas 9 to 16 ft. 
.MON...N winds 20 to 25 kt. Seas 12 to 18 ft. 
.MON NIGHT...N winds 20 to 30 kt. Seas 13 to 17 ft. 
.TUE...N to NW winds 20 to 30 kt. Seas 10 to 15 ft. 
.TUE NIGHT...N to NW winds 15 to 25 kt. Seas 10 to 12 ft. 
.WED...NW winds 10 to 20 kt. Seas 9 to 16 ft. 
.WED NIGHT...W to SW winds 10 to 15 kt, becoming SW 20
to 30 kt. Seas 9 to 13 ft. 

$$

PZZ920-241030-
Point St. George to Point Arena between 150 nm and 250 nm
offshore-
139 PM PST Fri Feb 23 2018

.TONIGHT...NW winds 10 to 15 kt, becoming 10 to 20 kt.
Seas 7 to 9 ft. 
.SAT...NW winds 15 to 25 kt. Seas 7 to 10 ft. 
.SAT NIGHT...N to NW winds 10 to 20 kt, becoming W to NW.
Seas 7 to 11 ft. 
.SUN...W winds 15 to 25 kt. Seas 8 to 13 ft. 
.SUN NIGHT...W to NW winds 20 to 30 kt. Seas 11 to 18 ft. 
.MON...N winds 20 to 30 kt. Seas 13 to 19 ft. 
.MON NIGHT...N to NW winds 15 to 25 kt. Seas 13 to 17 ft. 
.TUE...N to NW winds 15 to 25 kt. Seas 11 to 14 ft. 
.TUE NIGHT...NW winds 15 to 25 kt. Seas 10 to 12 ft. 
.WED...NW winds 15 to 20 kt, becoming W to NW 10 to 15 kt.
Seas 9 to 16 ft. 
.WED NIGHT...W to SW winds 20 to 30 kt. Seas 10 to 15 ft. 

$$

PZZ825-241030-
Point Arena to Pigeon Point between 60 nm and 150 nm offshore-
139 PM PST Fri Feb 23 2018

...GALE FORCE WINDS POSSIBLE MON NIGHT...

.TONIGHT...N winds 15 to 25 kt. Seas 7 to 12 ft. 
.SAT...NW winds 15 to 20 kt. Seas 6 to 10 ft. 
.SAT NIGHT...N winds 15 to 25 kt. Seas 7 to 9 ft. 
.SUN...N to NW winds 10 to 20 kt, becoming NW 10 to 15 kt.
Seas 7 to 10 ft. 
.SUN NIGHT...NW winds 15 to 20 kt, becoming W. Seas 7 to 11 ft. 
.MON...N to NW winds 20 to 30 kt. Seas 10 to 17 ft. 
.MON NIGHT...N winds 25 to 35 kt. Seas 13 to 20 ft. 
.TUE...N to NW winds 20 to 30 kt. Seas 10 to 18 ft. 
.TUE NIGHT...NW winds 20 to 30 kt. Seas 10 to 12 ft. 
.WED...N to NW winds 15 to 25 kt. Seas 7 to 11 ft. 
.WED NIGHT...W to NW winds 10 to 20 kt, becoming W to SW.
Seas 7 to 12 ft. 

$$

PZZ925-241030-
Point Arena to Pigeon Point between 150 nm and 250 nm offshore-
139 PM PST Fri Feb 23 2018

.TONIGHT...N to NW winds 10 to 20 kt. Seas 7 to 11 ft. 
.SAT...N to NW winds 15 to 20 kt. Seas 7 to 9 ft. 
.SAT NIGHT...N winds 10 to 20 kt. Seas 7 to 8 ft. 
.SUN...N to NW winds 10 to 20 kt, becoming NW 10 to 15 kt.
Seas 7 to 10 ft. 
.SUN NIGHT...W to NW winds 15 to 25 kt. Seas 8 to 11 ft. 
.MON...N to NW winds 20 to 30 kt. Seas 10 to 17 ft. 
.MON NIGHT...N winds 20 to 30 kt. Seas 14 to 17 ft. 
.TUE...N winds 20 to 30 kt, becoming NW 20 to 25 kt.
Seas 11 to 16 ft. 
.TUE NIGHT...NW winds 15 to 25 kt. Seas 10 to 12 ft. 
.WED...N to NW winds 10 to 20 kt. Seas 9 to 11 ft. 
.WED NIGHT...W winds 10 to 15 kt, becoming W to SW 15 to 25 kt.
Seas 8 to 13 ft. 

$$

PZZ830-241030-
Pigeon Point to Point Piedras Blancas between 60 nm and 150 nm
offshore-
139 PM PST Fri Feb 23 2018

...GALE FORCE WINDS POSSIBLE MON NIGHT...

.TONIGHT...N winds 20 to 25 kt. Seas 9 to 12 ft. 
.SAT...N to NW winds 15 to 20 kt. Seas 7 to 10 ft. 
.SAT NIGHT...N to NW winds 20 to 30 kt. Seas 7 to 9 ft. 
.SUN...N winds 20 to 30 kt, diminishing to 15 to 20 kt. Seas
6 to 10 ft. 
.SUN NIGHT...N to NW winds 15 to 20 kt. Seas 6 to 9 ft. 
.MON...N to NW winds 20 to 30 kt. Seas 8 to 14 ft. 
.MON NIGHT...N winds 30 to 35 kt. Seas 12 to 20 ft. 
.TUE...N winds 25 to 30 kt. Seas 13 to 19 ft. 
.TUE NIGHT...NW winds 20 to 30 kt. Seas 10 to 15 ft. 
.WED...N to NW winds 15 to 25 kt. Seas 7 to 11 ft. 
.WED NIGHT...NW winds 10 to 20 kt, becoming W. Seas 6 to 10 ft. 

$$

PZZ930-241030-
Pigeon Point to Point Piedras Blancas between 150 nm and 250 nm
offshore-
139 PM PST Fri Feb 23 2018

...GALE FORCE WINDS POSSIBLE MON NIGHT...

.TONIGHT...N winds 15 to 25 kt. Seas 8 to 12 ft. 
.SAT...N winds 15 to 20 kt. Seas 7 to 10 ft. 
.SAT NIGHT...N winds 15 to 25 kt. Seas 7 to 8 ft. 
.SUN...N winds 15 to 25 kt. Seas 7 to 9 ft. 
.SUN NIGHT...NW winds 15 to 20 kt. Seas 8 to 9 ft. 
.MON...NW winds 20 to 25 kt, becoming N. Seas 9 to 14 ft. 
.MON NIGHT...N winds 25 to 30 kt, becoming 25 to 35 kt. Seas
13 to 19 ft. 
.TUE...N winds 20 to 30 kt. Seas 12 to 19 ft. 
.TUE NIGHT...N to NW winds 20 to 25 kt. Seas 10 to 14 ft. 
.WED...N to NW winds 10 to 20 kt. Seas 9 to 11 ft. 
.WED NIGHT...NW winds 10 to 15 kt, becoming W 10 to 20 kt. Seas
8 to 11 ft. 

$$

PZZ835-241030-
Point Piedras Blancas to Santa Cruz Island, CA between 60 nm and
150 nm offshore-
139 PM PST Fri Feb 23 2018

...GALE FORCE WINDS POSSIBLE MON NIGHT...

.TONIGHT...N winds 20 to 30 kt. Seas 9 to 12 ft. 
.SAT...N winds 15 to 25 kt. Seas 8 to 10 ft. 
.SAT NIGHT...N winds 20 to 30 kt. Seas 8 to 11 ft.
.SUN...N winds 15 to 25 kt. Seas 7 to 11 ft. 
.SUN NIGHT...N to NW winds 15 to 25 kt. Seas 7 to 10 ft. 
.MON...N to NW winds 20 to 25 kt. Seas 8 to 11 ft. 
.MON NIGHT...N to NW winds 25 to 35 kt. Seas 12 to 20 ft. 
.TUE...N winds 30 to 35 kt, becoming N to NW 25 to 30 kt.
Seas 15 to 20 ft. 
.TUE NIGHT...N to NW winds 20 to 30 kt. Seas 11 to 17 ft. 
.WED...N to NW winds 15 to 25 kt. Seas 10 to 13 ft. 
.WED NIGHT...NW winds 15 to 25 kt. Seas 7 to 10 ft. 

$$

PZZ935-241030-
Point Piedras Blancas to Santa Cruz Island, CA between 150 nm
and 250 nm offshore-
139 PM PST Fri Feb 23 2018

...GALE FORCE WINDS POSSIBLE MON NIGHT...

.TONIGHT...N winds 15 to 25 kt. Seas 9 to 12 ft. 
.SAT...N winds 15 to 20 kt. Seas 8 to 10 ft. 
.SAT NIGHT...N winds 15 to 25 kt. Seas 7 to 9 ft. 
.SUN...N winds 15 to 25 kt. Seas 7 to 9 ft. 
.SUN NIGHT...N to NW winds 15 to 20 kt. Seas 8 to 10 ft. 
.MON...N to NW winds 20 to 25 kt. Seas 8 to 11 ft. 
.MON NIGHT...N winds 25 to 30 kt, becoming 25 to 35 kt.
Seas 11 to 19 ft. 
.TUE...N winds 25 to 30 kt. Seas 14 to 19 ft. 
.TUE NIGHT...N to NW winds 20 to 25 kt. Seas 11 to 16 ft. 
.WED...N winds 10 to 20 kt. Seas 9 to 12 ft. 
.WED NIGHT...W to NW winds 10 to 20 kt. Seas 8 to 11 ft. 

$$

PZZ840-241030-
Santa Cruz Island, CA to San Clemente Island, CA between 60 nm
and 150 nm offshore-
139 PM PST Fri Feb 23 2018

.TONIGHT...NW winds 20 to 30 kt, becoming N 15 to 25 kt.
Seas 7 to 12 ft. 
.SAT...N to NW winds 15 to 25 kt. Seas 6 to 10 ft. 
.SAT NIGHT...N to NW winds 20 to 30 kt. Seas 6 to 11 ft. 
.SUN...N winds 15 to 25 kt. Seas 6 to 11 ft. 
.SUN NIGHT...N winds 15 to 25 kt. Seas 6 to 10 ft. 
.MON...NW winds 20 to 30 kt. Seas 6 to 11 ft. 
.MON NIGHT...NW winds 20 to 30 kt. Seas 10 to 17 ft. 
.TUE...NW winds 20 to 30 kt. Seas 11 to 19 ft. 
.TUE NIGHT...NW winds 15 to 25 kt. Seas 10 to 17 ft. 
.WED...NW winds 15 to 25 kt. Seas 8 to 14 ft. 
.WED NIGHT...NW winds 15 to 25 kt. Seas 6 to 11 ft. 

$$

PZZ940-241030-
Santa Cruz Island, CA to 120W between 150 nm and 250 nm offshore-
139 PM PST Fri Feb 23 2018

.TONIGHT...N to NW winds 15 to 25 kt. Seas 7 to 11 ft. 
.SAT...N winds 15 to 20 kt. Seas 8 to 10 ft. 
.SAT NIGHT...N winds 15 to 25 kt. Seas 8 to 11 ft.
.SUN...N winds 15 to 25 kt. Seas 8 to 11 ft. 
.SUN NIGHT...N winds 15 to 25 kt. Seas 7 to 10 ft. 
.MON...N winds 15 to 25 kt, becoming NW. Seas 7 to 10 ft. 
.MON NIGHT...N to NW winds 20 to 30 kt. Seas 10 to 17 ft. 
.TUE...N to NW winds 25 to 30 kt. Seas 11 to 19 ft. 
.TUE NIGHT...N to NW winds 15 to 25 kt. Seas 12 to 17 ft. 
.WED...N to NW winds 15 to 25 kt. Seas 10 to 14 ft. 
.WED NIGHT...N to NW winds 10 to 20 kt. Seas 8 to 11 ft. 

$$

PZZ945-241030-
San Clemente Island, CA to Guadalupe Island from 60 nm offshore
west to 120W-
139 PM PST Fri Feb 23 2018

.TONIGHT...NW winds 20 to 25 kt, becoming N 15 to 20 kt.
Seas 6 to 11 ft. 
.SAT...N winds 10 to 20 kt, diminishing to 5 to 15 kt.
Seas 6 to 10 ft. 
.SAT NIGHT...N to NW winds 15 to 25 kt. Seas 6 to 10 ft. 
.SUN...N winds 10 to 20 kt, becoming N to NW 5 to 15 kt.
Seas 6 to 11 ft. 
.SUN NIGHT...NW winds 5 to 15 kt. Seas 4 to 8 ft.
.MON...NW winds 15 to 25 kt. Seas 6 to 10 ft. 
.MON NIGHT...NW winds 15 to 25 kt. Seas 6 to 11 ft. 
.TUE...NW winds 20 to 30 kt. Seas 9 to 16 ft. 
.TUE NIGHT...NW winds 15 to 25 kt. Seas 9 to 16 ft. 
.WED...NW winds 15 to 25 kt. Seas 8 to 14 ft. 
.WED NIGHT...NW winds 10 to 20 kt, diminishing to 5 to 15 kt.
Seas 6 to 11 ft. 

$$

.Forecaster Sommerville. Ocean Prediction Center.
Last Update:21:40Z, 23 February 2018
Updates: Four times per day

FZPN01 KWBC 232206
HSFEP1

HIGH SEAS FORECAST 
NWS OCEAN PREDICTION CENTER WASHINGTON DC 
2230 UTC FRI FEB 23 2018 

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 1800 UTC FEB 23. 
24 HOUR FORECAST VALID 1800 UTC FEB 24. 
48 HOUR FORECAST VALID 1800 UTC FEB 25. 

.WARNINGS. 

...STORM WARNING... 
.LOW W OF AREA NEAR 40N157E 1002 MB MOVING NE 30 KT. OVER 
FORECAST WATERS WITHIN 600 NM E QUADRANT WINDS 35 TO 45 KT. SEAS 
9 TO 16 FT. ELSEWHERE FROM 32N TO 44N W OF 172E WINDS 25 TO 35 
KT. SEAS 8 TO 13 FT. 
.12 HOUR FORECAST LOW 42N162E 991 MB. WITHIN 150 NM NW...360 NM 
NE...AND 240 NM S AND SW QUADRANTS WINDS 40 TO 50 KT. SEAS 12 TO 
21 FT. 
.24 HOUR FORECAST LOW 47N169E 985 MB. WITHIN 240 NM S SEMICIRCLE 
AND 180 NM NW AND 240 NM N QUADRANTS WINDS 45 TO 60 KT. SEAS 12 
TO 24 FT. ELSEWHERE WITHIN 240 NM NW...480 NM NE...300 NM SE... 
AND 240 NM SW QUADRANTS WINDS 35 TO 45 KT. SEAS 12 TO 18 FT. 
ALSO FROM 37N TO 53N BETWEEN 173W AND 162E WINDS 25 TO 35 KT. 
SEAS 8 TO 16 FT. 
.48 HOUR FORECAST LOW 56N180W 981 MB. BETWEEN 120 NM AND 300 NM 
S SEMICIRCLE WINDS 45 TO 60 KT. SEAS 18 TO 32 FT. ELSEWHERE 
WITHIN 360 NM NW AND N QUADRANTS AND WITHIN 420 NM SE SEMICIRCLE 
WINDS 35 TO 45 KT. SEAS 14 TO 28 FT. OTHERWISE OVER ICE FREE 
FORECAST WATERS N OF A LINE FROM 48N156W TO 48N176E TO 53N167E 
WINDS 25 TO 35 KT. SEAS 10 TO 20 FT...HIGHEST S. 

...STORM WARNING... 
.LOW NW OF AREA NEAR 58N176E 991 MB MOVING NE 10 KT. OVER 
FORECAST WATERS WITHIN 420 NM NE QUADRANT WINDS 40 TO 50 KT. 
SEAS 12 TO 20 FT. ELSEWHERE OVER ICE FREE FORECAST WATERS N OF 
47N W OF 158W WINDS 25 TO 40 KT. SEAS 10 TO 21 FT. 
.24 HOUR FORECAST LOW 59N176W 1003 MB. WITHIN 240 NM S QUADRANT 
WINDS 35 TO 45 KT. SEAS 20 TO 31 FT. ELSEWHERE NE OF A LINE FROM 
53N171W TO 57N175E W OF THE ALEUTIAN ISLANDS EXCEPT N OF 61N E 
OF 173W WINDS 25 TO 35 KT. SEAS 12 TO 24 FT. 
.48 HOUR FORECAST LOW DISSIPATED AND ASSOCIATED CONDITIONS 
DIMINISHED.

...STORM WARNING... 
.12 HOUR FORECAST NEW LOW 58N153W 1005 MB. WITHIN 540 NM S AND 
780 NM SW QUADRANTS WINDS 25 TO 35 KT. SEAS 9 TO 16 FT. 
.24 HOUR FORECAST LOW 58N144W 985 MB. WITHIN 480 NM S AND 420 NM 
W QUADRANTS WINDS 40 TO 55 KT. SEAS 14 TO 25 FT. ELSEWHERE N OF 
A LINE FROM 46N132W TO 47N146W TO 54N165W BETWEEN 131W AND THE 
ALEUTIAN ISLANDS WINDS 25 TO 40 KT. SEAS 10 TO 20 FT. 
.48 HOUR FORECAST LOW 55N131W 995 MB. WITHIN 720 NM SW 
SEMICIRCLE WINDS 25 TO 40 KT. SEAS 14 TO 28 FT. 

...GALE WARNING... 
.LOW 57N134W 1000 MB MOVING SE 15 KT. OVER ICE FREE FORECAST 
WATERS WITHIN 540 NM SW SEMICIRCLE WINDS 25 TO 40 KT. SEAS 12 TO 
22 FT. 
.24 HOUR FORECAST LOW DISSIPATED. FROM 40N TO 50N E OF 130W 
WINDS 20 TO 30 KT. SEAS 10 TO 19 FT. 
.36 HOUR FORECAST CONDITIONS DIMINISHED. 

...GALE WARNING... 
.36 HOUR FORECAST LOW W OF AREA NEAR 42N156E 1005 MB. OVER 
FORECAST WATERS WITHIN 300 NM E QUADRANT WINDS 25 TO 35 KT. SEAS 
9 TO 13 FT. 
.48 HOUR FORECAST LOW 47N163E 1002 MB. OVER FORECAST WATERS FROM 
41N TO 49N W OF 171E WINDS 25 TO 40 KT. SEAS 9 TO 15 FT. 

...HEAVY FREEZING SPRAY WARNING... 
.LIGHT TO MODERATE FREEZING SPRAY OVER ICE FREE FORECAST WATERS 
NE OF A LINE FROM 61N168W TO 63N173W.
.24 HOUR FORECAST LITTLE CHANGE.
.48 HOUR FORECAST MODERATE TO HEAVY FREEZING SPRAY N OF 61N AND 
W OF ALASKA. 

.SYNOPSIS AND FORECAST. 

.OVER FORECAST WATERS FROM 30N TO 40N E OF 126W AREA OF N TO NW 
WINDS 20 TO 30 KT. SEAS 9 TO 14 FT. 
.24 HOUR FORECAST FROM 34N TO 36N BETWEEN 121W AND 124W AREA OF 
N TO NW WINDS TO 25 KT. SEAS TO 10 FT. 
.48 HOUR FORECAST FROM 33N TO 36N BETWEEN 122W AND 124W AREA OF 
N TO NW WINDS TO 25 KT. SEAS TO 11 FT. 

.TROUGH FROM 30N172W TO 36N171W MOVING W 25 KT. FROM 30N TO 36N 
WITHIN 240 NM W OF TROUGH AND FROM 30N TO 33N BETWEEN 153W AND 
160W WINDS TO 25 KT. SEAS TO 11 FT. 
.24 HOUR FORECAST TROUGH DISSIPATED. FROM 30N TO 37N BETWEEN 
154W AND 166W AREA OF E TO SE WINDS 20 TO 30 KT. SEAS 8 TO 12 
FT. 
.48 HOUR FORECAST NEW TROUGH TO EXTEND FROM 30N169W TO 40N170W. 
FROM 30N TO 40N BETWEEN 155W AND TROUGH AREA OF SE WINDS 20 TO 
30 KT. SEAS 8 TO 13 FT. 

.DENSE FOG. VSBY OCCASIONALLY LESS THAN 1 NM WITHIN AREA BOUNDED 
BY 44N170W TO 47N153W TO 59N169W TO 44N170W...WITHIN AREA 
BOUNDED BY 31N163W TO 37N159W TO 36N171W TO 31N163W...AND WITHIN 
90 NM OF 36N164E. 
.24 HOUR FORECAST DENSE FOG WITHIN AREA BOUNDED BY 38N174E TO 
36N167E TO 44N167E TO 49N172E TO 38N174E AND WITHIN 90 NM OF 
32N164W. 
.48 HOUR FORECAST DENSE FOG FROM 32N TO 37N BETWEEN 162W AND 
170W...FROM 46N TO 53N BETWEEN 159W AND 172W...AND WITHIN 300 NM 
SE OF A LINE FROM 46N173W TO 40N178W. 

.HIGH 45N149W 1041 MB MOVING SE 10 KT. 
.24 HOUR FORECAST HIGH 42N146W 1042 MB. 
.48 HOUR FORECAST HIGH 39N147W 1041 MB. 

.HIGH 44N180W 1037 MB MOVING NE 35 KT. 
.24 HOUR FORECAST HIGH 48N160W 1041 MB. 
.48 HOUR FORECAST HIGH MERGED WITH HIGH 39N147W 1041 MB. 

.HIGH 40N138W 1040 MB NEARLY STATIONARY. 
.24 HOUR FORECAST HIGH DISSIPATED. 

.48 HOUR FORECAST HIGH 45N178E 1029 MB. 

.FORECASTER HUFFMAN. 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 1800 UTC FRI FEB 23.
24 HOUR FORECAST VALID 1800 UTC SAT FEB 24.
48 HOUR FORECAST VALID 1800 UTC SUN FEB 25.

.WARNINGS.

...ASHFALL ADVISORY...
FUEGO VOLCANO AT POSITION 14.3N 90.9W IS CURRENTLY ERUPTING. 
PLUME OF VOLCANIC ASH MAY REACH TO THE SURFACE THROUGH EARLY
SATURDAY N OF 14N E OF 92W. LOW LEVEL VISIBILITY MAY BE REDUCED 
TO 1 NM OR LESS. MARINERS SHOULD EXERCISE CAUTION. IF MARINERS 
ENCOUNTER VOLCANIC ASH...THEY ARE ENCOURAGED TO REPORT THE 
OBSERVATION TO THE NATIONAL WEATHER SERVICE BY CALLING 
305-229-4425.

.SYNOPSIS AND FORECAST.

.GULF OF PAPAGAYO WITHIN AREA BOUNDED BY 11N86W TO 10N86W TO 
09N90W TO 09N91W TO 11N92W TO 11N91W TO 11N86W NE TO E WINDS 20 
TO 25 KT. SEAS TO 8 FT.
.24 HOUR FORECAST GULF OF PAPAGAYO FROM 10.5N TO 11.5N E OF 88W
NE TO E WINDS 20 TO 25 KT. SEAS LESS THAN 8 FT.
.48 HOUR FORECAST CONDITIONS IMPROVE. WINDS 20 KT OR LESS. SEAS 
LESS THAN 8 FT.

.N OF 27.5N WITHIN 60 NM W OF BAJA CALIFORNIA PENINSULA...
INCLUDING SEBASTIAN VIZCAINO BAY...NW TO N WINDS 20 TO 25 KT. 
SEAS 8 TO 10 FT. ELSEWHERE WITHIN AREA BOUNDED BY 30N117W TO 
28N123W TO 28N127W TO 30N126W TO 30N117W WINDS 20 KT OR LESS. 
SEAS 8 TO 10 FT IN NW SWELL.
.24 HOUR FORECAST CONDITIONS MERGE.

.WITHIN AREA BOUNDED BY 18N119W TO 15N117W TO 12N131W TO 12N140W 
TO 21N140W TO 18N119W NE TO E WINDS 20 TO 25 KT. SEAS 9 TO 12 FT
IN MIXED NE AND NW SWELL. ELSEWHERE WITHIN AREA BOUNDED BY 
16N112W TO 07N115W TO 03N140W TO 25N140W TO 27N138W TO 16N112W 
WINDS 20 KT OR LESS. SEAS 8 TO 10 FT IN NE AND NW SWELL.
.24 HOUR FORECAST WITHIN AREA BOUNDED BY 18N127W TO 15N124W TO
13N127W TO 12N140W TO 20N140W TO 18N127W NE TO E WINDS 20 TO 25 
KT. SEAS 9 TO 12 FT IN MIXED NE AND NW SWELL. ELSEWHERE WITHIN 
AREA BOUNDED BY 30N116W TO 13N112W TO 04N140W TO 18N129W TO 
22N140W TO 30N136W TO 30N116W WINDS 20 KT OR LESS. SEAS 8 TO 10 
FT IN MIXED NE AND NW SWELL.
.48 HOUR FORECAST WITHIN AREA BOUNDED BY 26N140W TO 23N133W TO
16N140W TO 26N140W NE TO E WINDS 20 TO 25 KT. SEAS 9 TO 10 FT.
ELSEWHERE WITHIN AREA BOUNDED BY 30N117W TO 19N120W TO 13N114W 
TO 09N121W TO 06N140W TO 28N140W TO 30N117W WINDS 20 KT OR LESS.
SEAS 8 TO 11 FT IN MIXED NE AND NW SWELL.

.12 HOUR FORECAST GULF OF CALIFORNIA N OF 30N NW TO N WINDS 20 TO
25 KT. SEAS LESS THAN 8 FT.
.18 HOUR FORECAST GULF OF CALIFORNIA N OF 26N W OF 110.5W NW TO N
WINDS 20 TO 25 KT. SEAS LESS THAN 8 FT.
.24 HOUR FORECAST GULF OF CALIFORNIA S OF 27.5N W OF 110W NW TO N
WINDS 20 TO 25 KT. SEAS LESS THAN 8 FT.
.42 HOUR FORECAST CONDITIONS IMPROVE. WINDS 20 KT OR LESS. SEAS 
LESS THAN 8 FT.

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

CONVECTION VALID AT 2100 UTC FRI FEB 23...

.INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...
SURFACE TROUGH AXIS EXTENDS FROM 09N83W TO 02N100W. ITCZ AXIS 
EXTENDS FROM 02N100W TO 05N120W TO 07N140W. SCATTERED MODERATE 
CONVECTION WITHIN AREA BOUNDED BY 14N121W TO 07N121W TO 07N128W 
TO 13N135W TO 16N134W TO 20N115W TO 14N121W.

$$
.FORECASTER LEWITSKY. NATIONAL HURRICANE CENTER.
Last Update:22:07Z, 23 February 2018
Updates: Four times per day