High Seas Forecast
Issued by NWS

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000
FZPN01 KWBC 121649 CCA
HSFEP1

HIGH SEAS FORECAST
NWS OCEAN PREDICTION CENTER WASHINGTON DC
1630 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 1200 UTC DEC 12.
24 HOUR FORECAST VALID 1200 UTC DEC 13.
48 HOUR FORECAST VALID 1200 UTC DEC 14.

.WARNINGS.

...STORM WARNING...
.LOW 44N150W 990 MB MOVING NW 35 KT. WITHIN 240 NM E SEMICIRCLE
WINDS 25 TO 35 KT. SEAS 12 TO 17 FT.
.24 HOUR FORECAST LOW 57N155W 990 MB. N OF 58N BETWEEN 142W AND
151W WINDS 35 TO 50 KT. SEAS 14 TO 20 FT. ELSEWHERE N OF 57N
BETWEEN 138W AND 154W WINDS 25 TO 40 KT. SEAS 11 TO 18 FT.
ELSEWHERE WITHIN 840 NM E AND 180 NM SE QUADRANTS WINDS 20 TO 30
KT. SEAS 9 TO 14 FT.
.48 HOUR FORECAST LOW 66N169W 990 MB. N OF 63N W OF 169W WINDS
TO 25 KT. SEAS LESS THAN 8 FT.

...GALE WARNING...
.LOW 54N157W 976 MB MOVING NW 25 KT. FRONT EXTENDS FROM 59N154W
TO 57N144W TO 50N139W TO 30N150W. OVER FORECAST WATERS FROM 50N
TO 60N BETWEEN 146W AND 156W AND WITHIN 180 NM E OF FRONT FROM
38N TO 47N WINDS 25 TO 40 KT. SEAS 10 TO 24 FT...HIGHEST NEAR
52N152W.
.24 HOUR FORECAST LOW 63N168W 990 MB. N OF 63N W OF ALASKA AND
WITHIN 300 NM SW AND W QUADRANTS WINDS 20 TO 30 KT. SEAS TO 11
FT.
.48 HOUR FORECAST LOW INLAND AND CONDITIONS NW OF AREA.

...GALE WARNING...
.OVER FORECAST WATERS BETWEEN 180W AND A LINE FROM 45N168W TO
58N168W TO 64N173W AREA OF N TO NW WINDS 25 TO 40 KT. SEAS 11 TO
22 FT.
.24 HOUR FORECAST LOW 54N161W 989 MB. WITHIN 300 NM SW AND W
QUADRANTS AND FROM 31N TO 50N BETWEEN 155W AND 165W AREA OF NW
WINDS 20 TO 30 KT. SEAS 11 TO 17 FT...EXCEPT N OF 51N 8 TO 12 FT.
.48 HOUR FORECAST LOW 57N162W 995 MB. WITHIN 300 NM SE AND E
QUADRANTS AND FROM 46N TO 54N BETWEEN 143W AND 155W WINDS TO 25
KT. SEAS TO 11 FT.

...GALE WARNING...
.LOW W OF AREA NEAR 49N158E 976 MB NEARLY STATIONARY NEXT 24
HOURS THEN MOVING E 20 KT. FRONT EXTENDS FROM LOW TO 46N165E TO
42N167E TO 34N160E. OVER FORECAST WATERS WITHIN 240 NM S
QUADRANT AND WITHIN 180 NM N OF FRONT W OF 165E WINDS 35 TO 45
KT. SEAS 14 TO 22 FT. ALSO FROM 43N TO 53N W OF 165E AND WITHIN
300 NM NE AND E OF FRONT N OF 39N WINDS 25 TO 35 KT. SEAS 10 TO
16 FT. ELSEWHERE N OF A LINE FROM 33N160E TO 35N174E WINDS TO 25
KT. SEAS 8 TO 13 FT.
.24 HOUR FORECAST COMPLEX LOW WITH MAIN LOW 49N159E 978 MB WITH
A FRONT TO EXTEND FROM 54N169E TO A NEW LOW 52N178E 987 MB TO
44N176W. FROM 40N TO 48N W OF 165E WINDS 25 TO 40 KT. SEAS 14 TO
26 FT. ALSO WITHIN 120 NM N AND NE OF FRONT OF 49N WINDS 25 TO
35 KT. SEAS 9 TO 15 FT. ELSEWHERE N OF A LINE FROM 35N160E TO
41N178W AND WITHIN 480 NM S QUADRANT OF NEW LOW AND WITHIN 240
NM N AND E OF FRONT WINDS TO 25 KT. SEAS 8 TO 18 FT...HIGHEST S
OF MAIN LOW.
.48 HOUR FORECAST COMPLEX LOW WITH MAIN LOW 50N172E 980 MB WITH
A FRONT TO EXTEND FROM MAIN LOW TO A SECOND LOW 55N179E 981 MB
THEN TO 48N164W. FROM 36N TO 44N W OF 171E AND BETWEEN 180 NM
AND 420 NM W AND NW QUADRANTS AND WITHIN 180 NM N AND NW OF
FRONT W OF 178W WINDS 25 TO 40 KT. SEAS 14 TO 25 FT...EXCEPT N
50N 9 TO 18 FT.

...GALE WARNING...
.24 HOUR FORECAST NEW LOW 46N143W 1001 MB. FRONT TO EXTEND FROM
LOW TO 30N146W. WITHIN 300 NM E SEMICIRCLE AND WITHIN 240 NM E
OF FRONT WINDS 25 TO 40 KT. SEAS 12 TO 21 FT.
.48 HOUR FORECAST LOW 57N140W 1002 MB. FRONT TO EXTEND FROM
60N143W TO LOW CENTER TO 45N135W. OVER FORECAST WATERS BETWEEN
THE FRONT AND 130W N OF 51N WINDS 30 TO 40 KT. SEAS 11 TO 20 FT.
ELSEWHERE WITHIN 240 NM NE AND E SEMICIRCLES AND BETWEEN THE
FRONT AND 129W WINDS 20 TO 30 KT. SEAS 8 TO 16 FT.

...GALE WARNING...
.24 HOUR FORECAST NEW LOW 35N160E 1006 MB. OVER FORECAST WATERS
FROM 30N TO 35N W OF 172E AREA OF SW WINDS 20 TO 30 KT. SEAS TO
10 FT.
.48 HOUR FORECAST LOW 43N166W 1002 MB. WITHIN 300 NM E AND 420
NM S QUADRANTS WINDS 25 TO 35 KT. SEAS 9 TO 16 FT. ELSEWHERE
WITHIN 360 NM NE...540 NM E AND 720 NM S QUADRANTS WINDS 20 TO
30 KT. SEAS 8 TO 13 FT.

...GALE WARNING...
.48 HOUR FORECAST NEW LOW 43N179W 994 MB. FRONT TO EXTEND FROM
LOW TO 30N165E. WITHIN 180 NM E OF FRONT WINDS 25 TO 35 KT. SEAS
9 TO 16 FT. ELSEWHERE WITHIN 240 NM SE SEMICIRCLE AND BETWEEN
THE FRONT AND 173W S OF 40N WINDS 20 TO 30 KT. SEAS 8 TO 13 FT.

...HEAVY FREEZING SPRAY WARNING...
.MODERATE TO HEAVY FREEZING SPRAY OVER ICE FREE FORECAST WATERS
N AND W OF A LINE FROM 65N167W TO 60N178W.
.24 HOUR FORECAST MODERATE TO HEAVY FREEZING SPRAY N OF 61N W OF
171W.
.48 HOUR FORECAST LIGHT TO MODERATE FREEZING SPRAY FROM 61N TO
65N W OF 167W.

.SYNOPSIS AND FORECAST.

.LOW 57N138W 1010 MB MOVING NW 20 KT. OVER FORECAST WATERS N AND
E OF A LINE FROM 50N129W TO 58N140W 20 TO 30 KT. SEAS 8 TO 15 FT.
.24 HOUR FORECAST LOW DISSIPATED INLAND AND ASSOCIATED
CONDITIONS AS DESCRIBED WITH LOW 57N155W IN WARNINGS SECTION
ABOVE.

.LOW 33N164E 1011 MB MOVING NE 20 KT. OVER FORECAST WATERS
WITHIN 300 NM SE SEMICIRCLE WINDS 20 TO 30 KT. SEAS TO 11 FT.
.24 HOUR FORECAST LOW 37N174E 1009 MB. FRONT TO EXTEND FROM
41N172W TO LOW CENTER TO 31N160E. N OF 30N WITHIN 420 NM SE OF
FRONT WINDS 20 TO 30 KT. SEAS 9 TO 15 FT.
.48 HOUR FORECAST LOW AND CONDITIONS MERGED WITH NEW LOW 43N179W
IN WARNINGS SECTION.

.48 HOUR FORECAST FRON 34N TO 42N BETWEEN 123W AND 126W AREA OF
N TO NW WINDS TO 25 KT. SEAS TO 10 FT.

.DENSE FOG. VSBY OCCASIONALLY LESS THAN 1 NM FROM 35N TO 49N
BETWEEN 132W AND 140W AND FROM 39N TO 46N BETWEEN 173E AND 167E.
.24 HOUR FORECAST DENSE FOG BETWEEN 143W AND A LINE FROM 39N134W
TO 48N140W TO 54N133W AND FROM 37N TO 40N BETWEEN 179E AND 174E.
.48 HOUR FORECAST DENSE FOG FROM 38N TO 44N BETWEEN 174W AND
178W.

.HIGH 36N128W 1028 MB MOVING N 10 KT.
.24 HOUR FORECAST HIGH 40N129W 1026 MB.
.48 HOUR FORECAST HIGH 44N129W 1026 MB.

.HIGH 32N178E 1024 MB MOVING SE 15 KT.
.24 HOUR FORECAST HIGH 30N174W 1024 MB.
.48 HOUR FORECAST HIGH 30N162W 1025 MB.

.48 HOUR FORECAST NEW HIGH 35N143W 1026 MB.

.48 HOUR FORECAST NEW HIGH 37N148W 1026 MB.

.FORECASTER BANCROFT. 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 TUE DEC 12.
24 HOUR FORECAST VALID 1200 UTC WED DEC 13.
48 HOUR FORECAST VALID 1200 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
10 TO 16 FT. ELSEWHERE WITHIN 90 NM OF LINE FROM 16N95W TO
14N95.5W TO 12N98W N TO NE WINDS 20 TO 30 KT. SEAS 9 TO 14 FT.
REMAINDER AREA FROM 01N TO 15N BETWEEN 93W AND 113W 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 13.5N96.5W
INCLUDING GULF OF TEHUANTEPEC...N TO NE WINDS 30 TO 40 KT. SEAS
11 TO 16 FT. ELSEWHERE WITHIN 75 NM OF LINE FROM 16N95W TO
14N96W TO 12.5N97W N TO NE WINDS 20 TO 30 KT. SEAS 9 TO 14 FT.
REMAINDER OF AREA FROM 05N TO 13N BETWEEN 94W AND 105W AND FROM
02N TO 12N BETWEEN 106W AND 116W WINDS 20 KT OR LESS. SEAS 8 TO
9 FT IN MIXED NE AND SW SWELL.
.36 HOUR FORECAST WITHIN 30 NM OF LINE FROM 16N95W TO 14N95.5W
INCLUDING GULF OF TEHUANTEPEC...N TO NE WINDS 20 TO 30 KT. SEAS
8 TO 10 FT. FROM 07N TO 15N BETWEEN 94W AND 102W WINDS 20 KT OR
LESS. SEAS 8 TO 10 FT IN MIXED NE AND NW SWELL.
.48 HOUR FORECAST WITHIN 30 NM OF LINE FROM 16N95W TO 14N95.5W
INCLUDING GULF OF TEHUANTEPEC...N TO NE WINDS 20 TO 25 KT. SEAS
TO 8 FT.

.SYNOPSIS AND FORECAST.

.WITHIN 45 NM OF LINE FROM 11N86W TO 09N88W...INCLUDING GULF
OF PAPAGAYO...NE WINDS 20 TO 30 KT. SEAS TO 9 FT. ELSEWHERE FROM
05N TO 11N BETWEEN 86W AND 93W WINDS 20 KT OR LESS. SEAS 8 TO 9
FT IN MIXED NE AND SW SWELL.
.24 HOUR FORECAST WITHIN 45 NM OF LINE FROM 11N86W TO 09N90W...
INCLUDING GULF OF PAPAGAYO...NE WINDS 20 TO 25 KT. SEAS TO 9 FT.
.48 HOUR FORECAST WITHIN 45 NM OF LINE FROM 11N86W TO 09N89W...
INCLUDING GULF OF PAPAGAYO...NE WINDS 20 TO 25 KT. SEAS TO 9 FT.
FROM 06N TO 12N BETWEEN 89W AND 105W WINDS 20 KT OR LESS. SEAS
TO 9 FT IN MIXED NE AND SW SWELL.

.FROM 12N TO 17N BETWEEN 126W AND 138W NE WINDS 20 TO 25 KT.
SEAS 9 TO 11 FT. ELSEWHERE W OF LINE FROM 30N124W TO 20N125W TO
15N120W TO 05N140W WINDS 20 KT OR LESS. SEAS 8 TO 11 FT IN NW
SWELL.
.24 HOUR FORECAST W OF LINE FROM 30N135W TO 21N120W TO 12N120W
TO 00N136W WINDS 20 KT OR LESS. SEAS 8 TO 11 FT IN NW SWELL.
.48 HOUR FORECAST W OF LINE FROM 30N125W TO 23N130W TO 15N118W
TO 00N116W WINDS 20 KT OR LESS. SEAS 8 TO 13 FT IN PRIMARILY NW
SWELL...HIGHEST NEAR 30N140W.

.06 HOUR FORECAST GULF OF CALIFORNIA N OF 30N NW WINDS 20 TO 25
KT. SEAS LESS THAN 8 FT.
.24 HOUR FORECAST LITTLE CHANGE.
.30 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 1430 UTC TUE DEC 12...

.INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...
MONSOON TROUGH FROM 08N78W TO 04N92W. ITCZ FROM 04N92W TO
08N120W TO 09N130W TO 09N140W. SURFACE TROUGH FROM 16N123W TO
10N127W. SCATTERED MODERATE ISOLATED STRONG FROM 09N TO 16N
BETWEEN 115W AND 134W.

$$
.FORECASTER LATTO. NATIONAL HURRICANE CENTER.



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