High Seas Forecast
Issued by NWS

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000
FZPN01 KWBC 120334
HSFEP1

HIGH SEAS FORECAST
NWS OCEAN PREDICTION CENTER WASHINGTON DC
0430 UTC TUE DEC 12 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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).

SECURITE

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

SYNOPSIS VALID 0000 UTC DEC 12.
24 HOUR FORECAST VALID 0000 UTC DEC 13.
48 HOUR FORECAST VALID 0000 UTC DEC 14.

.WARNINGS.

...STORM WARNING...
.LOW 50N156W 969 MB MOVING NE 05 KT. WITHIN 180 NM SE SEMICIRCLE
WINDS 40 TO 50 KT. SEAS 20 TO 31 FT. ELSEWHERE WITHIN 420 NM
N...600 NM NE...1080 NM SE...AND 300 NM S QUADRANTS WINDS 25 TO
40 KT. SEAS 11 TO 24 FT.
.24 HOUR FORECAST LOW 57N162W 989 MB. WITHIN 180 NM NE AND 240
NM E QUADRANTS WINDS 20 TO 30 KT. SEAS LESS THAN 8 FT.
.48 HOUR FORECAST LOW DISSIPATED AND ASSOCIATED CONDITIONS
DIMINISHED.

...STORM WARNING...
.24 HOUR FORECAST NEW LOW 51N153W 989 MB. OVER FORECAST WATERS
WITHIN 420 NM NE...840 NM E...AND 1320 NM SE QUADRANTS WINDS 25
TO 40 KT. SEAS 12 TO 21 FT.
.42 HOUR FORECAST LOW 56N158W 986 MB. WITHIN 90 NM N AND NE OF A
LINE FROM 58N152W TO 59N144W TO 55N137W WINDS 40 TO 50 KT. SEAS
12 TO 18 FT.
.48 HOUR FORECAST LOW 58N160W 983 MB. FRONT TO EXTEND FROM LOW
TO 48N146W TO 57N140W TO 51N136W TO 39N139W. WITHIN 420 NM
E...360 NM SE...300 NM SW...AND 240 NM NW QUADRANTS AND
ELSEWHERE WITHIN 180 NM NE AND E OF THE FRONT WINDS 25 TO 40 KT.
SEAS 9 TO 18 FT.

...GALE WARNING...
.LOW 40N160W 990 MB MOVING SE 10 KT. BETWEEN 300 NM AND 960 NM
SW QUADRANT WINDS 30 TO 45 KT. SEAS 18 TO 32 FT.
.24 HOUR FORECAST CONDITIONS ABSORBED BY LOW 47N158W DESCRIBED
BELOW.

...GALE WARNING...
.OVER FORECAST WATERS N OF 46N BETWEEN 168W AND 177E AREA OF N
TO NW WINDS 25 TO 40 KT. SEAS 11 TO 23 FT.
.24 HOUR FORECAST NEW LOW 47N158W 991 MB. WITHIN 900 NM SW AND
1020 NM NW QUADRANTS WINDS 25 TO 35 KT. SEAS 10 TO 23 FT.
.48 HOUR FORECAST LOW 47N153W 1002 MB. WITHIN 300 NM S QUADRANT
WINDS TO 25 KT. SEAS 12 TO 16 FT.

...GALE WARNING...
.LOW 50N134W 1006 MB MOVING NW 20 KT. OVER FORECAST WATERS
WITHIN 240 NM NE AND 360 NM SE QUADRANTS WINDS 25 TO 40 KT. SEAS
9 TO 15 FT.
.24 HOUR FORECAST LOW DISSIPATED AND ASSOCIATED CONDITIONS
DIMINISHED.

...GALE WARNING...
.OVER FORECAST WATERS S OF A LINE FROM 48N160E TO 42N169E AREA
OF S TO SE WINDS 25 TO 40 KT. SEAS 10 TO 16 FT.
.24 HOUR FORECAST FRONT TO EXTEND FROM 53N67E TO 51N172E TO
43N178E TO 38N176E N OF 39N W OF 165E AND WITHIN 120 NM NE AND E
OF THE FRONT WINDS 30 TO 45 KT. SEAS 12 TO 23 FT.
.48 HOUR FORECAST LOW 48N165E 979 MB. WITHIN 480 NM SE AND 660
NM SW QUADRANTS WINDS 30 TO 45 KT. SEAS 18 TO 30 FT.

...GALE WARNING...
.48 HOUR FORECAST NEW LOW 45N175W 1000 MB. OVER FORECAST WATERS
WITHIN 600 NM SE AND 1080 NM SW QUADRANTS WINDS 30 TO 45 KT.
SEAS 8 TO 16 FT.

...GALE WARNING...
.48 HOUR FORECAST NEW LOW 53N174E 982 MB. OVER FORECAST WATERS
WITHIN 360 NM NE AND 180 NM NW QUADRANTS WINDS 25 TO 40 KT. SEAS
8 TO 16 FT.

...HEAVY FREEZING SPRAY WARNING...
.MODERATE TO HEAVY FREEZING SPRAY NW AND W OF A LINE FROM
64N167W TO 61N174W.
.24 HOUR FORECAST LIGHT TO MODERATE FREEZING SPRAY N OF 58N W OF
170W.
.48 HOUR FORECAST LIGHT TO MODERATE FREEZING SPRAY N OF 59N W OF
169W.

.SYNOPSIS AND FORECAST.

.OVER FORECAST WATERS FROM 49N TO 54N W OF 173E AREA OF E WINDS
20 TO 30 KT. SEAS 13 TO 16 FT.
.24 HOUR FORECAST CONDITIONS DIMINISHED.

.DENSE FOG. VSBY OCCASIONALLY LESS THAN 1 NM OVER FORECAST
WATERS FROM 40N TO 44N W OF 165E.
.24 HOUR FORECAST CONDITIONS IMPROVING.

.DENSE FOG. 24 HOUR FORECAST VSBY OCCASIONALLY LESS THAN 1 NM
FROM 41N TO 47N BETWEEN 140W AND 146W.
.48 HOUR FORECAST DENSE FOG FROM 43N TO 50N BETWEEN 132W AND
138W.

.HIGH 41N131W 1025 MB MOVING NE 15 KT.
.24 HOUR FORECAST HIGH DISSIPATED.

.HIGH 33N129W 1025 MB MOVING N 10 KT.
.24 HOUR FORECAST HIGH 37N128W 1026 MB.
.48 HOUR FORECAST HIGH 37N131W 1025 MB.

.HIGH 31N174E 1024 MB MOVING SE 20 KT.
.24 HOUR FORECAST HIGH 31N179W 1024 MB.
.48 HOUR FORECAST HIGH S OF AREA.

.FORECASTER BELL. 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 TUE DEC 12.
24 HOUR FORECAST VALID 0000 UTC WED DEC 13.
48 HOUR FORECAST VALID 0000 UTC THU DEC 14.

.WARNINGS.

...GALE WARNING...
.WITHIN 45 NM OF LINE FROM 16N95W TO 15N95.5W TO 14N96W...
...INCLUDING GULF OF TEHUANTEPEC...N TO NE WINDS 30 TO 40 KT.
SEAS 12 TO 18 FT. ELSEWHERE WITHIN 90 NM OF LINE FROM 16N95W TO
14N95.5W TO 13N96W TO 12N98W N TO NE WINDS 20 TO 30 KT. SEAS 10
TO 16 FT. WITHIN 60 NM OF LINE FROM 12N98W TO 11.5N100W NE TO E
WINDS 20 TO 25 KT. SEAS 10 TO 14 FT PRIMARILY IN NE SWELL.
REMAINDER AREA FROM 02N TO 15N BETWEEN 90W AND 110W WINDS 20 KT
OR LESS. SEAS 8 TO 12 FT IN MIXED NE AND SW SWELL.
.24 HOUR FORECAST WITHIN 30 NM OF LINE FROM 16N95W TO 15N95W TO
14N96W...INCLUDING GULF OF TEHUANTEPEC...N TO NE WINDS 30 TO 40
KT. SEAS 11 TO 16 FT. ELSEWHERE WITHIN 90 NM OF LINE FROM 16N95W
TO 15N95W TO 14N96W TO 13N96.5W N TO NE WINDS 20 TO 30 KT. SEAS
9 TO 14 FT. REMAINDER AREA FROM 01N TO 15N BETWEEN 93W AND 114W
WINDS 20 KT OR LESS. SEAS 8 TO 11 FT IN MIXED NE AND SW SWELL.
.42 HOUR FORECAST WITHIN 30 NM OF LINE FROM 16N95W TO 15N95.5W
TO 14N96W...INCLUDING GULF OF TEHUANTEPEC...N TO NE WINDS 30 TO
35 KT. SEAS 10 TO 15 FT. ELSEWHERE WITHIN 60 NM OF LINE FROM
16N95W TO 15N95.5W TO 13N96.5W N TO NE WINDS 20 TO 30 KT. SEAS 8
TO 12 FT. REMAINDER AREA FROM 10N TO 15N BETWEEN 94W AND 105W
WINDS 20 KT OR LESS. SEAS 8 TO 11 FT IN MIXED NE AND NW SWELL.
.48 HOUR FORECAST WITHIN 30 NM OF LINE FROM 16N95W TO
15N95.5W...INCLUDING GULF OF TEHUANTEPEC...N TO NE WINDS 25 TO
30 KT. SEAS 9 TO 13 FT. ELSEWHERE WITHIN 60 NM OF LINE FROM
16N95W TO 15N95.5W TO 13N96.5W N TO NE WINDS 20 TO 25 KT. SEAS
9 TO 11 FT. REMAINDER AREA FROM 08N TO 15N BETWEEN 94W AND 104W
WINDS 20 KT OR LESS. SEAS 8 TO 10 FT IN MIXED NE AND NW SWELL.

.SYNOPSIS AND FORECAST.

.WITHIN 30 NM OF LINE FROM 11N86W TO 09N87W...INCLUDING GULF
OF PAPAGAYO...NE WINDS 20 TO 30 KT. SEAS TO 9 FT. N OF 08N
BETWEEN 85W AND 86W N TO NE WINDS 20 TO 25 KT. SEAS TO 8 FT.
ELSEWHERE FROM 05N TO 11N BETWEEN 85.5W AND 90W WINDS 20 KT OR
LESS. SEAS 8 TO 10 FT IN MIXED NE AND SW SWELL.
.24 HOUR FORECAST WITHIN 30 NM OF LINE FROM 11N86W TO 10N87W...
...INCLUDING GULF OF PAPAGAYO...NE WINDS 20 TO 25 KT. SEAS TO 9
FT. ELSEWHERE FROM 05N TO 10N BETWEEN 86W AND 93W WINDS 20 KT OR
LESS. SEAS TO 9 FT IN MIXED NE AND SW SWELL.
.48 HOUR FORECAST WITHIN 30 NM OF LINE FROM 11N86W TO 10N87.5W
TO 09N89.5W...INCLUDING GULF OF PAPAGAYO...NE WINDS 20 TO 30 KT.
SEAS 8 TO 10 FT. WITHIN 30 NM OF LINE FROM 09N89.5W TO 08N94W
WINDS 20 KT OR LESS. SEAS TO 9 FT IN NE SWELL.

.WEAKENING STATIONARY FRONT FROM 30N137W TO 28N140W. W OF LINE
FROM 30N129W TO 21N132W TO 14N128W TO 09N140W WINDS 20 KT OR
LESS...EXCEPT NE TO E 20 TO 25 KT FROM 13N TO 18N BETWEEN 128W
AND 137W. SEAS 8 TO 10 FT IN NW SWELL S OF 21N AND 10 TO 12 FT N
OF 22N.
.12 HOUR FORECAST FRONT DISSIPATED. WITHIN AREA BOUNDED BY
30N134W TO 30N125W TO 18N125W TO 11N135W TO 09N140W TO 30N140W
TO 30N134W WINDS 20 KT OR LESS...EXCEPT E 20 TO 25 KT FROM
13N TO 15N BETWEEN 131W AND 138W. SEAS 8 TO 11 FT IN NW SWELL.
.24 HOUR FORECAST WITHIN AREA BOUNDED BY 30N134W TO 30N124W TO
17N122W TO 07N132W TO 02N140W TO 25N140W TO 30N134W WINDS 20 KT
OR LESS. SEAS 8 TO 11 FT IN NW TO N SWELL. N OF 28N W OF 139W
WINDS 20 KT OR LESS. SEAS 8 TO 10 FT IN NW SWELL.
.36 HOUR FORECAST WITHIN AREA BOUNDED BY 22N140W TO 23N124W TO
14N122W TO 07N131W TO 00N140W TO 22N140W WINDS 20 KT OR LESS.
SEAS 8 TO 10 FT IN NW TO N SWELL. NW OF LINE FROM 30N137W TO
25N140W WINDS 20 KT OR LESS. SEAS 8 TO 11 FT IN NW SWELL...
HIGHEST NW.
.48 HOUR FORECAST WITHIN AREA BOUNDED BY 30N140W TO 30N133W TO
20N134W TO 20N118W TO 11N121W TO 07N128W TO 00N132W TO 00N140W
TO 30N140W WINDS 20 KT OR LESS. SEAS 8 TO 11 FT IN NW SWELL...
HIGHEST NW.

.36 HOUR FORECAST GULF OF CALIFORNIA N OF 30N NW WINDS 20 TO 25
KT. SEAS LESS THAN 8 FT.
.48 HOUR FORECAST 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 0230 UTC TUE DEC 12...

.TROUGH FROM 20N114W TO 14N119W TO 10N125W. SCATTERED MODERATE
WITHIN 180 NM W OF TROUGH FROM 11N TO 14N.

.INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...
MONSOON TROUGH AXIS EXTENDS FROM 09N79W TO LOW PRES NEAR 07N86W
1010 MB TO 04N95W. ITCZ CONTINUES FROM 04N95W TO 08N108W TO
10N119W. ITCZ RESUMES FROM 10N129W TO BEYOND 08N140W. NO
SIGNIFICANT CONVECTION IS NOTED.

$$
.FORECASTER AGUIRRE. NATIONAL HURRICANE CENTER.



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