High Seas Forecast
Issued by NWS

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000
FZPN01 KWBC 210410
HSFEP1

HIGH SEAS FORECAST
NWS OCEAN PREDICTION CENTER WASHINGTON DC
0430 UTC SAT OCT 21 2017

SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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).

THE U.S. COAST GUARD IS CURRENTLY EXPERIENCING DEGRADATION IN
IMAGE QUALITY OF ALL HFFAX PRODUCTS. TROUBLESHOOTING OF THE
PROBLEM IS TAKING PLACE.

SECURITE

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

SYNOPSIS VALID 0000 UTC OCT 21.
24 HOUR FORECAST VALID 0000 UTC OCT 22.
48 HOUR FORECAST VALID 0000 UTC OCT 23.

.WARNINGS.

...STORM WARNING...
.LOW 52N154W 981 MB MOVING NE 20 KT. FRONT EXTENDS FROM 46N136W
TO 42N150W TO 37N170W. FROM 46N TO 51N BETWEEN 140W AND
153W...ALSO WITHIN 180 NM S OF FRONT E OF 160W...AND FROM 41N TO
45N BETWEEN 131W AND 136W WINDS 25 TO 35 KT. SEAS 9 TO 19 FT.
ELSEWHERE BETWEEN 155W AND A LINE EXTENDING FROM 54N155W TO
52N140W TO 50N135W TO 46N130W TO 40N130W...AND WITHIN 300 NM S
OF FRONT WINDS 20 TO 30 KT. SEAS 8 TO 13 FT.
.12 HOUR FORECAST LOW 53N141W 977 MB. WITHIN 120 NM NE OF A LINE
FROM 53N135W TO 49N130W WINDS 35 TO 50 KT. SEAS 10 TO 17 FT.
.24 HOUR FORECAST LOW 55N141W 972 MB. FRONT WILL EXTEND FROM
48N125W TO 45N130W TO 38N150W. FROM 45N TO 50N BETWEEN 130W AND
135W...AND WITHIN 180 NM OF CENTER...ALSO WITHIN 180 NM S AND SE
OF FRONT E OF 140W WINDS 25 TO 40 KT. SEAS 9 TO 19 FT. ELSEWHERE
FROM 50N TO 58N E OF 140W...AND WITHIN 300 NM S OF FRONT. WINDS
20 TO 30 KT. SEAS 8 TO 13 FT.
.48 HOUR FORECAST LOW 58N137W 998 MB. WITHIN 180 NM S
SEMICIRCLE...AND E OF A LINE FROM 54N143W TO 48N134W WINDS 20 TO
30 KT. SEAS 10 TO 18 FT.

...STORM WARNING...
.WITHIN 180 NM N OF A LINE FROM 36N160E TO 36N165E WINDS 25 TO
35 KT. SEAS 10 TO 15 FT. ELSEWHERE FROM 34N TO 38N BETWEEN 165E
AND 170E WINDS 20 TO 30 KT. SEAS TO 12 FT.
.24 HOUR FORECAST LOW 35N177W 1012 MB. FROM 34N TO 38N W OF
170E...ALSO WITHIN 180 NM N OF A LINE FROM 34N170E TO 34N178E
WINDS 25 TO 35 KT. SEAS 9 TO 15 FT.
.48 HOUR FORECAST LOW 41N154W 993 MB. FRONT WILL EXTEND FROM
CENTER TO 35N160W TO 30N169W. WITHIN 120 NM E QUADRANT...AND 120
NM SE OF FRONT N OF 35N WINDS 35 TO 50 KT. SEAS 14 TO 23 FT.
ELSEWHERE WITHIN 120 NM W SEMCIRCLE AND 180 NM E QUADRANT...AND
FROM 40N TO 44N BETWEEN 145W AND 152W...AND WITHIN 360 NM E OF
FRONT WINDS 25 TO 40 KT. SEAS 9 TO 16 FT.

...GALE WARNING...
.LOW 52N162W 979 MB MOVING E 25 KT. FROM 41N TO 49N BETWEEN 155W
AND 178W...ALSO FROM 49N TO 54N BETWEEN 167W AND 173W...AND
WITHIN 180 NM NW QUADRANT WINDS 30 TO 45 KT. SEAS 12 TO 32 FT.
ELSEWHERE WITHIN 900 NM SW...420 NM NW...240 NM NE AND 300 NM SE
QUADRANTS WINDS 20 TO 30 KT. SEAS 8 TO 14 FT.
.24 HOUR FORECAST LOW 53N146W 979 MB. FROM 43N TO 50N BETWEEN
135W AND 151W...ALSO WITHIN 180 NM W AND SW QUADRANTS WINDS 25
TO 40 KT. SEAS 12 TO 23 FT. ELSEWHERE FROM 40N TO 51N BETWEEN
140W AND 158W...ALSO WITHIN 240 NM W SEMICIRCLE WINDS 20 TO 30
KT. SEAS 8 TO 15 FT.
.48 HOUR FORECAST LOW AND CONDITIONS ABSORBED BY LOW 58N137W 998
MB.

...GALE WARNING...
.LOW 64N164W 986 MB MOVING S 10 KT. N OF 61N W OF 170W WINDS 25
TO 35 KT. SEAS TO 12 FT.
.24 HOUR FORECAST LOW 62N165W 987 MB. N OF 45N BETWEEN 176W AND
175E...ALSO WITHIN 300 NM W SEMICIRCLE WINDS 25 TO 35 KT. SEAS 8
TO 14 FT. ELSEWHERE N OF 43N BETWEEN 167W AND 170E WINDS 20 TO
30 KT. SEAS TO 12 FT.
.48 HOUR FORECAST LOW 60N163W 995 MB. N OF 50N BETWEEN 170W AND
178E WINDS 20 TO 30 KT. SEAS 8 TO 14 FT.

...GALE WARNING...
.FROM 32N TO 35N BETWEEN 118W AND 122W AREA OF NW WINDS 25 TO 35
KT. SEAS 10 TO 16 FT WITH NW SWELL.
.24 HOUR FORECAST FROM 30N TO 37N BETWEEN 119W AND 124W AREA OF
NW WINDS 20 TO 30 KT. SEAS 8 TO 15 FT WITH NW SWELL.
.48 HOUR FORECAST FROM 30N TO 38N BETWEEN 121W AND 125W AREA OF
N WINDS TO 25 KT. SEAS TO 11 FT.

...GALE WARNING...
.48 HOUR FORECAST N OF 37N W OF 165E WINDS 25 TO 40 KT. SEAS 9
TO 15 FT.

...GALE WARNING...
.48 HOUR FORECAST LOW 54N159W 996 MB. FROM 51N TO 56N BETWEEN
155W AND 161W WINDS 25 TO 35 KT. SEAS TO 12 FT.

.SYNOPSIS AND FORECAST.

.48 HOUR FORECAST S OF 50N BETWEEN 170W AND 178E...ALSO S OF 36N
W OF 180W...AND FROM 36N TO 47N BETWEEN 164W AND 170W WINDS 20
TO 30 KT. SEAS 8 TO 14 FT.

.HIGH 32N155W 1025 MB NEARLY STATIONARY.
.24 HOUR FORECAST LITTLE CHANGE.
.48 HOUR FORECAST HIGH DISSIPATED.

.HIGH 34N134W 1025 MB MOVING E 5 KT.
.24 HOUR FORECAST HIGH 34N130W 1026 MB.
.48 HOUR FORECAST HIGH 35N131W 1030 MB.

.48 HOUR FORECAST HIGH 44N172E 1036 MB.

.FORECASTER SHAW. 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 0000 UTC SAT OCT 21.
24 HOUR FORECAST VALID 0000 UTC SUN OCT 22.
48 HOUR FORECAST VALID 0000 UTC MON OCT 23.

.WARNINGS.

.NONE.

.SYNOPSIS AND FORECAST.

.N OF 27N WITHIN 180 NM W OF BAJA CALIFORNIA PENINSULA NW WINDS
20 TO 25 KT. SEAS 8 TO 11 FT IN NW SWELL. ELSEWHERE WITHIN AREA
BOUNDED BY 18N133W TO 13N135W TO 13N140W TO 30N140W TO 30N118W
TO 18N133W WINDS 20 KT OR LESS. SEAS 8 TO 16 FT IN NW SWELL...
HIGHEST NEAR 30N129W.
.24 HOUR FORECAST WITHIN AREA BOUNDED BY 07N126W TO 07N140W TO
30N140W TO 30N116W TO 21N110W TO 07N126W...INCLUDING SEBASTIAN
VIZCAINO BAY...WINDS 20 KT OR LESS. SEAS 8 TO 15 FT IN NW
SWELL...HIGHEST NEAR 30N120W.
.48 HOUR FORECAST WITHIN AREA BOUNDED BY 03.4S110W TO 00N140W TO
30N140W TO 30N116W TO 17N106W TO 03.4S110W...INCLUDING SEBASTIAN
VIZCAINO BAY...WINDS 20 KT OR LESS. SEAS 8 TO 11 FT IN MIXED S
AND NW SWELL.

.WITHIN AREA BOUNDED BY 03.4S81W TO 03.4S120W TO 06N120W TO
00N88W TO 03.4S81W WINDS 20 KT OR LESS. SEAS 8 TO 9 FT IN MIXED
SE AND SW SWELL.
.24 HOUR FORECAST S OF 01S W OF 109W WINDS 20 KT OR LESS. SEAS 8
FT IN MIXED SE AND SW SWELL.
.48 HOUR FORECAST CONDITIONS MERGE.

.GULF OF TEHUANTEPEC N OF 15N BETWEEN 94.5W AND 95.5W N WINDS 20
TO 25 KT. SEAS TO 8 FT.
.18 HOUR FORECAST WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT.
.24 HOUR FORECAST LITTLE CHANGE.
.36 HOUR FORECAST GULF OF TEHUANTEPEC N OF 15N BETWEEN 94.5W AND
95.5W N WINDS 20 TO 25 KT. SEAS TO 8 FT.
.48 HOUR FORECAST LITTLE CHANGE.

.18 HOUR FORECAST GULF OF CALIFORNIA N OF 30N W OF 114W NW TO N
WINDS 20 TO 25 KT. SEAS LESS THAN 8 FT.
.24 HOUR FORECAST LITTLE CHANGE.
.30 HOUR FORECAST GULF OF CALIFORNIA N OF 25N WITHIN 60 NM OF
BAJA CALIFORNIA PENINSULA NW WINDS 20 TO 25 KT. SEAS BUILDING
TO 8 FT.
.48 HOUR FORECAST GULF OF CALIFORNIA N OF 25N WITHIN 60 NM OF
BAJA CALIFORNIA PENINSULA NW WINDS 20 TO 25 KT. SEAS TO 8 FT.

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

CONVECTION VALID AT 0145 UTC SAT OCT 21...

.TROPICAL WAVE N OF 07N ALONG 95W...SCATTERED MODERATE ISOLATED
STRONG FROM 07N TO 11N BETWEEN 93W AND 99W.

.INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...
MONSOON TROUGH AXIS EXTENDS FROM 09N75W TO 11N87W TO 08N98W TO
08N110W TO 09N119W. ITCZ AXIS EXTENDS FROM 09N119W TO 09N130W TO
09N140W. SCATTERED MODERATE ISOLATED STRONG FROM 07N TO 10N
BETWEEN 88W AND 92W...FROM 05N TO 07N BETWEEN 113W AND 117W...
AND FROM 09N TO 11N BETWEEN 131W AND 135W.

$$
.FORECASTER LEWITSKY. NATIONAL HURRICANE CENTER.


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