High Seas Forecast
Issued by NWS

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362
FZPN01 KWBC 160930
HSFEP1

HIGH SEAS FORECAST
NWS OCEAN PREDICTION CENTER WASHINGTON DC
1030 UTC SAT DEC 16 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 0600 UTC DEC 16.
24 HOUR FORECAST VALID 0600 UTC DEC 17.
48 HOUR FORECAST VALID 0600 UTC DEC 18.

.WARNINGS.

...STORM WARNING...
.LOW 54N173W 971 MB MOVING NE 25 KT. FROM 48N TO 53N BETWEEN
165W AND 180W...AND FROM 53N TO 57N BETWEEN 178W AND 178E WINDS
35 TO 45 KT. SEAS 14 TO 28 FT. ALSO WITHIN 780 NM S
SEMICIRCLE...AND OVER FORECAST WATERS WITHIN 480 NM NW QUADRANT
WINDS 25 TO 35 KT. SEAS 10 TO 20 FT.
.06 HOUR FORECAST LOW 54N169W 978 MB. WITHIN 360 NM S AND SW
QUADRANTS WINDS 35 TO 50 KT. SEAS 18 TO 32 FT.
.24 HOUR FORECAST LOW 57N155W 985 MB. WITHIN AN AREA BOUNDED BY
A LINE FROM 54N133W TO 43N170W TO 52N177W TO 60N147W TO 58N136W
TO 54N133W WINDS 25 TO 40 KT. SEAS 14 TO 28 FT...EXCEPT E OF
144W SEAS 8 TO 15 FT.
.48 HOUR FORECAST LOW 58N146W 1001 MB. WITHIN 600 NM SW QUADRANT
WINDS 25 TO 35 KT. SEAS 11 TO 20 FT. ELSEWHERE FROM 48N TO 60N
BETWEEN 136W AND 149W WINDS TO 25 KT. SEAS 8 TO 15 FT.

...STORM WARNING...
.LOW 60N152W 983 MB MOVING N 05 KT. FRONT EXTENDS FROM LOW TO
55N143W TO 39N162W. N OF 56N WITHIN 120 NM NE OF FRONT WINDS 40
TO 50 KT. SEAS 14 TO 20 FT. ELSEWHERE N OF 53N WITHIN 420 NM E
OF FRONT...S OF 53N WITHIN 540 NM E OF FRONT...AND N OF 55N E OF
153W WINDS 25 TO 40 KT. SEAS 11 TO 21 FT.
.24 HOUR FORECAST LOW DISSIPATED INLAND OVER ALASKA. EXCEPT
WHERE NOTED ABOVE...FROM 44N TO 54N BETWEEN 125W AND 140W WINDS
TO 25 KT. SEAS 8 TO 15 FT.
.48 HOUR FORECAST CONDITIONS DIMINISHED.

...STORM WARNING...
.12 HOUR FORECAST OVER FORECAST WATERS W OF A LINE FROM 36N161E
TO 51N170E AREA OF S WINDS 25 TO 40 KT. SEAS 8 TO 15 FT.
.24 HOUR FORECAST RAPIDLY INTENSIFYING LOW JUST W OF AREA
44N159E 987 MB. FRONT TO EXTEND FROM 54N168E TO 48N167E TO LOW.
WITHIN 300 NM SE QUADRANT...AND WITHIN 240 NM E AND SE OF FRONT
WINDS 40 TO 50 KT. SEAS 14 TO 23 FT. ELSEWHERE W OF A LINE FROM
31N166E TO 46N178E TO 56N177E WINDS 25 TO 40 KT. SEAS 9 TO 18
FT.
.48 HOUR FORECAST LOW NW OF AREA 58N169E 945 MB. FRONT TO EXTEND
FROM LOW TO 59N179E TO 49N180W TO 30N162E. WITHIN 240 NM SE
QUADRANT...AND N OF 37N WITHIN 300 NM E OF FRONT WINDS 45 TO 55
KT. SEAS 18 TO 34 FT. ELSEWHERE WITHIN 480 NM E AND NE OF
FRONT...AND N OF 44N W OF FRONT WINDS 30 TO 45 KT. SEAS 13 TO 26
FT. ALSO S OF 44N W OF FRONT WINDS 20 TO 30 KT. SEAS 9 TO 17 FT.

...GALE WARNING...
.LOW 60N166W 970 MB MOVING SE 10 KT. OVER FORECAST WATERS N OF
58N BETWEEN 166W AND 173W...AND N OF 54N BETWEEN 160W AND 166W
WINDS 25 TO 35 KT. SEAS 8 TO 13 FT.
.24 HOUR FORECAST LOW 58N163W 982 MB. WITHIN 120 NM S AND 240 NM
W QUADRANTS WINDS 35 TO 45 KT. SEAS 15 TO 23 FT. ELSEWHERE N OF
THE ALEUTIAN ISLANDS WITHIN 480 NM SW SEMICIRCLE WINDS 25 TO 35
KT. SEAS 10 TO 19 FT. ALSO N OF 61N W OF 168W WINDS TO 25 KT.
SEAS TO 10 FT.
.48 HOUR FORECAST LOW AND CONDITIONS MERGED WITH LOW 58N146W
DESCRIBED ABOVE.

...GALE WARNING...
.FROM 32N TO 42N BETWEEN 121W AND 127W AREA OF N TO NW WINDS 25
TO 35 KT. SEAS 8 TO 14 FT. ELSEWHERE FROM 31N TO 50N BETWEEN
121W AND 131W WINDS TO 25 KT. SEAS TO 11 FT.
.24 HOUR FORECAST FROM 30N TO 41N BETWEEN 119W AND 128W AREA OF
N TO NW WINDS 25 TO 35 KT. SEAS 10 TO 19 FT.
.48 HOUR FORECAST FROM 30N TO 42N BETWEEN 123W AND 130W AREA OF
N WINDS TO 25 KT. SEAS TO 11 FT.

...GALE WARNING...
.FROM 30N TO 37N BETWEEN 171W AND 161E AREA OF NE WINDS TO 25
KT. SEAS TO 10 FT.
.24 HOUR FORECAST FRONT TO EXTEND FROM 39N156W TO 30N171W.
WITHIN 660 NM W OF FRONT AREA OF NE WINDS 25 TO 40 KT. SEAS 9 TO
16 FT.
.48 HOUR FORECAST NEW LOW 39N151W 1012 MB. FRONT TO EXTEND FROM
43N144W TO LOW TO 30N157W. S OF 33N WITHIN 960 NM W OF
FRONT...AND N OF 33N WITHIN 600 NM W OF FRONT WINDS 25 TO 35 KT.
SEAS 11 TO 21 FT.

...HEAVY FREEZING SPRAY WARNING...
.MODERATE TO HEAVY FREEZING SPRAY OVER FORECAST WATERS N OF 64N
W OF 167W.
.24 HOUR FORECAST LITTLE CHANGE.
.48 HOUR FORECAST LITTLE CHANGE.

.SYNOPSIS AND FORECAST.

.FROM 30N TO 34N BETWEEN 134W AND 159W AREA OF E TO NE WINDS TO
25 KT. SEAS TO 11 FT.
.24 HOUR FORECAST FROM 30N TO 33N BETWEEN 150W AND 160W WINDS
LESS 25 KT. SEAS TO 10 FT.
.48 HOUR FORECAST FROM 30N TO 33N BETWEEN 140W AND 152W WINDS
LESS THAN 25 KT. SEAS TO 10 FT.

.DENSE FOG. VSBY OCCASIONALLY LESS THAN 1 NM WITHIN 180 NM SE OF
A LINE FROM 55N143W TO 40N160W.
.24 HOUR FORECAST DENSE FOG WITHIN 120 NM OF 49N128W...AND FROM
42N TO 47N BETWEEN 166E AND 160E.
.48 HOUR FORECAST CONDITIONS IMPROVING.

.HIGH 41N136W 1035 MB MOVING S 10 KT.
.24 HOUR FORECAST HIGH 38N136W 1031 MB.
.48 HOUR FORECAST HIGH 38N133W 1028 MB.

.HIGH 39N170E 1027 MB MOVING NE 25 KT.
.24 HOUR FORECAST HIGH 41N177W 1036 MB.
.48 HOUR FORECAST HIGH 42N168W 1036 MB.

.FORECASTER KELLS. 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 0600 UTC SAT DEC 16.
24 HOUR FORECAST VALID 0600 UTC SUN DEC 17.
48 HOUR FORECAST VALID 0600 UTC MON DEC 18.

.WARNINGS.

...GALE WARNING...
.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.
.12 HOUR FORECAST WITHIN 60 NM EITHER SIDE OF LINE FROM 16N95W
TO 14N95.5W TO 12.5N98W...INCLUDING GULF OF TEHUANTEPEC...N TO
NE WINDS 20 TO 30 KT. SEAS 8 TO 10 FT. FROM 07N TO 10N BETWEEN
97.5W AND 101.5W WINDS 20 KT OR LESS. SEAS TO 8 FT IN MIXED
SWELL.
.24 HOUR FORECAST N OF 15N BETWEEN 94W AND 95W...INCLUDING GULF
OF TEHUANTEPEC...N WINDS 20 TO 25 KT. SEAS LESS THAN 8 FT.
.30 HOUR FORECAST WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT.
.48 HOUR FORECAST N OF 14.5N BETWEEN 94W AND 95W...INCLUDING
GULF OF TEHUANTEPEC...N WINDS 20 TO 25 KT. SEAS LESS THAN 8 FT.

.SYNOPSIS AND FORECAST.

.FROM 13.5N TO 18N W OF 132W NE TO E WINDS 20 TO 25 KT. SEAS 11
TO 14 FT. ELSEWHERE W OF LINE FROM 30N116W TO 14N118W TO 01N131W
TO 00N138W WINDS 20 KT OR LESS. SEAS 8 TO 12 FT IN NW SWELL.
.24 HOUR FORECAST COLD FRONT FROM 32N114W TO 28N115W TO
24.5N130W. N OF FRONT W OF 119W NW TO N WINDS 20 TO 25 KT...
EXCEPT N TO NE WINDS FROM 126W TO 130W. SEAS 9 TO 15 FT. N OF
FRONT E OF 119W WINDS 20 KT OR LESS. SEAS 8 TO 14 FT IN NW
SWELL. ELSEWHERE NW OF LINE FROM 28N115W TO 07N114W TO 00N124W
WINDS 20 KT OR LESS. SEAS 8 TO 11 FT IN NW SWELL.
.48 HOUR FORECAST COLD FRONT TO DISSIPATE. N OF LINE FROM
25N112W TO 20N123W TO 20N140W WINDS 20 KT OR LESS. SEAS 8 TO 12
FT IN NW SWELL. S OF LINE 15N140W TO 15N104W WINDS 20 KT OR
LESS. SEAS 8 TO 9 FT IN MIXED NW AND SW SWELL.

.GULF OF CALIFORNIA 12 HOUR FORECAST LOW PRES DEVELOPING N OF
AREA. N OF 29.5N E OF 114W S TO SW WINDS 20 TO 25 KT. SEAS LESS
THAN 8 FT.
.24 HOUR FORECAST COLD FRONT ENTERING FAR NORTHERN GULF. N OF
30N E OF 114W S TO SW WINDS 20 TO 25 KT. SEAS LESS THAN 8 FT.
.48 HOUR FORECAST GULF OF CALIFORNIA COLD FRONT TO MOVE SE AND
DISSIPATE S OF 27N. N OF 30N W OF 113.5W NW WINDS 20 TO 25 KT.
SEAS LESS THAN 8 FT.

.24 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 09.5N TO 12N E OF 90W...INCLUDING THE
GULF OF PAPAGAYO...NE TO E 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 0830 UTC SAT DEC 16...

SCATTERED MODERATE TO STRONG WITHIN 75 NM EITHER SIDE OF LINE
FROM 11N119W TO 15N110W TO 19.5N105W.

SCATTERED MODERATE TO STRONG FROM 12.5N TO 20N W OF 136W.

.INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...
ITCZ EXTENDS FROM 06.5N91W TO BEYOND 10N140W. SCATTERED MODERATE
TO STRONG CONVECTION WITHIN 120 NM N OF AXIS BETWEEN 96W AND
99W...AND BETWEEN 110W AND 113W.

$$
.FORECASTER STRIPLING. NATIONAL HURRICANE CENTER.



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