High Seas Forecast
Issued by NWS

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529
FZPN01 KWBC 152312 CCB
HSFEP1

HIGH SEAS FORECAST
NWS OCEAN PREDICTION CENTER WASHINGTON DC
2230 UTC FRI DEC 15 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 1800 UTC DEC 15.
24 HOUR FORECAST VALID 1800 UTC DEC 16.
48 HOUR FORECAST VALID 1800 UTC DEC 17.

.WARNINGS.

...STORM WARNING...
.LOW 55N179W 966 MB MOVING SE 20 KT NEXT 12 HOURS THEN TURNING
MORE NE. FROM 53N TO 59N BETWEEN 179W AND 176E AND FROM 45N TO
51N BETWEEN 172W AND 176E WINDS 35 TO 45 KT. SEAS 12 TO 23 FT.
ALSO WITHIN 300 NM SW SEMICIRCLE AND BETWEEN 150 NM AND 360 NM N
QUADRANT AND FROM 43N TO 52N BETWEEN 168W AND 170E WINDS 25 TO
40 KT. SEAS 8 TO 18 FT.
.18 HOUR FORECAST LOW 54N167W 976 MB. WITHIN 300 NM S QUADRANT
AND FROM 48N TO 53N BETWEEN 162W AND 178W WINDS 40 TO 50 KT.
SEAS 16 TO 29 FT.
.24 HOUR FORECAST LOW 56N163W 977 MB. WITHIN 180 NM SE OF A LINE
FROM 55N160W TO 51N175W WINDS 35 TO 45 KT. SEAS 15 TO 30 FT.
ELSEWHERE FROM 46N TO 55N BETWEEN 154W AND 179W WINDS 25 TO 40
KT. SEAS 12 TO 22 FT...EXCEPT E OF 167W IN BERING SEA TO 12 FT.
.48 HOUR FORECAST LOW 59N150W 991 MB. BETWEEN 120 NM AND 300 NM
SW QUADRANT WINDS 35 TO 45 KT. SEAS 13 TO 24 FT. ELSEWHERE
WITHIN 600 NM S AND 420 NM W QUADRANTS WINDS 25 TO 35 KT. SEAS
12 TO 21 FT...EXCEPT IN BERING SEA 9 TO 18 FT.

...STORM WARNING...
.LOW 55N153W 983 MB MOVING NE 30 KT THEN SLOWING AFTER 6 HOURS.
FRONT EXTENDS FROM LOW TO 50N155W TO 40N166W TO 30N179E. EXCEPT
WHERE PREVIOUSLY NOTED...WITHIN 240 NM E QUADRANT AND WITHIN 360
NM E OF FRONT N OF 42N WINDS 30 TO 45 KT. SEAS 11 TO 20 FT.
ELSEWHERE WITHIN 300 NM E AND SE SEMICIRCLES AND WITHIN 480 NM E
OF FRONT N OF 39N WINDS 25 TO 35 KT. SEAS 10 TO 16 FT.
.12 HOUR FORECAST LOW 60N150W 984 MB. FRONT TO EXTEND FROM LOW
TO 55N141W TO 44N153W TO 40N160W. WITHIN 180 NM E OF FRONT N OF
57N WINDS 40 TO 50 KT. SEAS 14 TO 22 FT. ELSEWHERE WITHIN 360 NM
E AND SE OF FRONT N OF 42N WINDS 25 TO 40 KT. SEAS 9 TO 18
FT...HIGHEST NEAR 49N143W.
.24 HOUR FORECAST LOW WELL INLAND AND A NEW LOW 60N143W 991 MB.
E OF A FRONT FROM 56N137W TO 51N130W WINDS 30 TO 40 KT. SEAS 9
TO 13 FT. ELSEWHERE WITHIN 1080 NM S QUADRANT WINDS 20 TO 30 KT.
SEAS 8 TO 16 FT.
.48 HOUR FORECAST LOW INLAND AND CONDITIONS AS DESCRIBED WITH
LOW 59N150W ABOVE.

...STORM WARNING...
.24 HOUR FORECAST OVER FORECAST WATERS W OF A LINE FROM 40N160E
TO 47N167E AREA OF S WINDS 25 TO 40 KT. SEAS 10 TO 17 FT.
ELSEWHERE W OF A LINE FROM 36N165E TO 49N171E WINDS TO 25 KT.
SEAS TO 11 FT.
.36 HOUR FORECAST RAPIDLY INTENSIFYING LOW 45N160E 988 MB. FRONT
TO EXTEND FROM 54N169E TO LOW CENTER. WITHIN 300 NM SE QUADRANT
AND WITHIN 240 NM E OF FRONT S OF 48N WINDS 40 TO 50 KT. SEAS 14
TO 22 FT. ELSEWHERE OVER FORECAST WATERS W OF A LINE FROM
35N166E TO 50N176E TO 54N172E AND E OF FRONT WINDS 25 TO 40 KT.
SEAS 9 TO 18 FT.
.48 HOUR FORECAST LOW 53N168E 965 MB. FRONT TO EXTEND FROM LOW
TO 47N171E TO 30N160E. WITHIN 300 NM E QUADRANT AND WITHIN 240
NM E OF FRONT N OF 42N WINDS 45 TO 55 KT. SEAS 18 TO 29 FT.
ELSEWHERE WITHIN 600 NM S AND SE AND 540 NM NE QUADRANTS AND
WITHIN 360 NM E OF FRONT N OF 36N WINDS 30 TO 45 KT. SEAS 10 TO
23 FT.

...GALE WARNING...
.LOW 58N164W 966 MB MOVING NW 15 KT AND SLOWING BY 12 HOURS THEN
TURNING SE 15 KT AFTER 24 HOURS. OVER FORECAST WATERS FROM 56N
TO 60N BETWEEN 148W AND 167W AND WITHIN 300 NM NW QUADRANT WINDS
25 TO 40 KT. SEAS TO 12 FT...EXCEPT E OF 157W 9 TO 16 FT.
.24 HOUR FORECAST LOW 60N168W 968 MB. EXCEPT WHERE PREVIOUSLY
NOTED WITHIN FROM 54N TO 65N BETWEEN 168W AND 177W WINDS 25 TO
40 KT. SEAS 8 TO 17 FT.
.48 HOUR FORECAST LOW DISSIPATED NEAR 58N157W WITH CONDITIONS AS
DESCRIBED WITH LOW 59N150W ABOVE.

...GALE WARNING...
.FROM 31N TO 50N BETWEEN 124W AND 132W AREA OF N TO NW WINDS
LESS THAN 25 KT. SEAS TO 11 FT.
.12 HOUR FORECAST FROM 35N TO 41N BETWEEN 122W AND 126W AREA OF
N TO NW WINDS 25 TO 40 KT. SEAS 10 TO 16 FT.
.24 HOUR FORECAST FROM 34N TO 41N BETWEEN 122W AND 127W AREA OF
N TO NW WINDS 25 TO 40 KT. SEAS 10 TO 18 FT. ELSEWHERE E OF A
LINE FROM 43N125W TO 30N134W WINDS 20 TO 30 KT. SEAS 9 TO 15 FT.
.48 HOUR FORECAST BETWEEN 120W AND A LINE FROM 42N125W 30N132W
AREA OF N WINDS 20 TO 30 KT. SEAS 8 TO 15 FT.

...GALE WARNING...
.24 HOUR FORECAST FRONT TO EXTEND FROM 38N162W TO 30N179W.
WITHIN 360 NM W OF FRONT S OF 36N AREA OF NE WINDS 25 TO 35 KT.
SEAS 9 TO 14 FT.
.48 HOUR FORECAST FRONT TO EXTEND FROM 41N148W TO 30N170W.
WITHIN 360 NM W OF FRONT S OF 37N WINDS 30 TO 40 KT. SEAS 13 TO
21 FT. ELSEWHERE WITHIN 900 NM W OF FRONT WINDS 20 TO 30 KT.
SEAS 10 TO 18 FT.

...HEAVY FREEZING SPRAY WARNING...
.MODERATE TO HEAVY FREEZING SPRAY OVER ICE FREE FORECAST WATERS
FROM 62N TO 65N W OF 168W.
.24 HOUR FORECAST MODERATE TO HEAVY FREEZING SPRAY N OF A LINE
FROM 63N167W TO 61N178W.
.48 HOUR FORECAST LITTLE CHANGE.

.SYNOPSIS AND FORECAST.

.FROM 30N TO 34N BETWEEN 139W AND 153W AREA OF E TO NE WINDS TO
25 KT. SEAS 9 TO 13 FT.
.24 HOUR FORECAST FROM 30N TO 33N BETWEEN 145W AND 160W AREA OF
E TO NE WINDS TO 25 KT. SEAS TO 11 FT.
.48 HOUR FORECAST FROM 30N TO 34N BETWEEN 145W AND 158W AREA OF
E TO SE WINDS LESS THAN 25 KT. SEAS TO 10 FT.

.DENSE FOG. VSBY OCCASIONALLY LESS THAN 1 NM WITHIN 480 NM SE OF
A LINE FROM 54N158W TO 41N169W.
.24 HOUR FORECAST DENSE FOG WITHIN 240 NM E OF A LINE FROM
53N142W TO 43N153W.
.48 HOUR FORECAST DENSE FOG FROM 42N TO 51N BETWEEN 170E AND
164E.

.HIGH 42N138W 1033 MB MOVING SE 05 KT.
.24 HOUR FORECAST HIGH 39N135W 1033 MB.
.48 HOUR FORECAST HIGH 38N135W 1030 MB.

.HIGH 37N160E 1025 MB MOVING NE 35 KT.
.24 HOUR FORECAST HIGH 40N176E 1032 MB.
.48 HOUR FORECAST HIGH 42N170W 1038 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 1800 UTC FRI DEC 15.
24 HOUR FORECAST VALID 1800 UTC SAT DEC 16.
48 HOUR FORECAST VALID 1800 UTC SUN DEC 17.

.WARNINGS.

...GULF OF TEHUANTEPEC GALE WARNING...
.06 HOUR FORECAST N OF 15N BETWEEN 94W AND 96W...INCLUDING GULF
OF TEHUANTEPEC...N WINDS 20 TO 30 KT. SEAS LESS THAN 8 FT.
.12 HOUR FORECAST WITHIN 30 NM EITHER SIDE OF LINE FROM 16N95W
TO 15N95W...INCLUDING GULF OF TEHUANTEPEC...N WINDS 30 TO 35 KT.
SEAS TO 9 FT. ELSEWHERE WITHIN 45 NM EITHER SIDE OF LINE FROM
16N95W TO 14N95W N TO NE WINDS 20 TO 30 KT. SEAS TO 8 FT.
.24 HOUR FORECAST WITHIN 60 NM EITHER SIDE OF LINE FROM 16N95W
TO 15N95W TO 12.5N97W...INCLUDING GULF OF TEHUANTEPEC...N TO NE
WINDS 20 TO 30 KT. SEAS 8 TO 10 FT.
.42 HOUR FORECAST WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT.

.SYNOPSIS AND FORECAST.

.GULF OF CALIFORNIA N OF 30N NW WINDS 20 TO 25 KT. SEAS TO 8 FT.
.18 HOUR FORECAST GULF OF CALIFORNIA WINDS 20 KT OR LESS. SEAS
LESS THAN 8 FT.
.24 HOUR FORECAST LITTLE CHANGE.
.30 HOUR FORECAST GULF OF CALIFORNIA COLD FRONT MOVING INTO
NORTHERN GULF. N OF 29N S TO SW WINDS 20 TO 25 KT. SEAS LESS
THAN 8 FT.
.48 HOUR FORECAST GULF OF CALIFORNIA COLD FRONT DISSIPATING
ALONG 27N. N OF 30N NW WINDS 20 TO 25 KT. SEAS LESS THAN 8 FT.

.FROM 15N TO 22N W OF 133W NE TO E WINDS 20 TO 25 KT. SEAS 12 TO
15 FT. ELSEWHERE W OF LINE FROM 30N117W TO 20N120W TO 10N120W TO
05N140W WINDS 20 KT OR LESS. SEAS 8 TO 12 FT IN NW SWELL.
.24 HOUR FORECAST COLD FRONT FROM 30N117W TO 28N128W. N OF FRONT
N TO NE WINDS 20 TO 25 KT. SEAS 9 TO 11 FT. N OF 28N W OF 128W
NE TO E WINDS 20 TO 25 KT. SEAS 8 TO 10 FT. ELSEWHERE W OF LINE
FROM 30N116W TO 10N110W TO 00N123W WINDS 20 KT OR LESS. SEAS 8
TO 10 FT IN NW SWELL.
.48 HOUR FORECAST COLD FRONT DISSIPATED. W OF LINE FROM 30N116W
TO 10N107W TO 03.4S114W WINDS 20 KT OR LESS. SEAS 8 TO 14 FT IN
NW SWELL...HIGHEST NEAR 29N122W.

.36 HOUR FORECAST FROM 10N TO 12N E OF 89W...INCLUDING THE GULF
OF PAPAGAYO...NE TO E WINDS 20 TO 25 KT. SEAS LESS THAN 8 FT.
.48 HOUR FORECAST FROM 10N TO 12N E OF 88W...INCLUDING THE GULF
OF PAPAGAYO...NE TO E WINDS 20 TO 25 KT. SEAS LESS THAN 8 FT.

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

CONVECTION VALID AT 2100 UTC FRI DEC 15...

SCATTERED MODERATE CONVECTION IS NOTED FROM 15N TO 18N BETWEEN
105W AND 112W.

.INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...
ITCZ FROM 09N84W TO 06N96W TO 07N104W TO 07N118W TO 10N130W TO
10N140W. NO SIGNIFICANT CONVECTION.

$$
.FORECASTER AL. NATIONAL HURRICANE CENTER.



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