High Seas Forecast
Issued by NWS

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000
FZPN01 KWBC 210953
HSFEP1

HIGH SEAS FORECAST
NWS OCEAN PREDICTION CENTER WASHINGTON DC
1030 UTC TUE NOV 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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).

SECURITE

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

SYNOPSIS VALID 0600 UTC NOV 21.
24 HOUR FORECAST VALID 0600 UTC NOV 22.
48 HOUR FORECAST VALID 0600 UTC NOV 23.

.WARNINGS.

...STORM WARNING...
.LOW NW OF AREA 65N179W 974 MB MOVING NE 15 KT. OVER ICE FREE
FORECAST WATERS WITHIN 480 NM S AND 360 NM E QUADRANTS WINDS 40
TO 55 KT. SEAS 12 TO 24 FT. ELSEWHERE WITHIN 720 NM S AND 540 NM
SE QUADRANTS WINDS 25 TO 40 KT. SEAS 9 TO 18 FT.
.24 HOUR FORECAST LOW N OF AREA 69N169W 973 MB. N OF 64N AND W
OF ALASKA WINDS 35 TO 50 KT. SEAS 11 TO 22 FT. ELSEWHERE WITHIN
420 NM S QUADRANT WINDS 25 TO 35 KT. SEAS 9 TO 18 FT.
.36 HOUR FORECAST LOW AND CONDITIONS WELL N OF AREA.

...STORM WARNING...
.LOW 43N137W 990 MB MOVING NW 15 KT. WITHIN 240 NM E OF A TROUGH
FROM 40N136W TO 30N138W WINDS 25 TO 35 KT. SEAS 9 TO 15 FT.
ELSEWHERE WITHIN 540 NM NE...600 NM E AND 720 NM SE QUADRANTS
WINDS 20 TO 30 KT. SEAS TO 11 FT.
.24 HOUR FORECAST LOW 49N140W 982 MB. WITHIN 240 NM N AND NW OF
A LINE FROM 51N128W TO 51N138W TO 43N147W WINDS 25 TO 40 KT.
SEAS 9 TO 18 FT.
.30 HOUR FORECAST LOW 49N140W 980 MB. WITHIN 180 NM W SEMICIRCLE
WINDS 35 TO 50 KT. SEAS 11 TO 22 FT.
.48 HOUR FORECAST LOW 47N137W 990 MB. WITHIN 240 NM OF LOW
CENTER EXCEPT N QUADRANT WINDS 25 TO 40 KT. SEAS 12 TO 22 FT.
ELSEWHERE WITHIN 240 NM N QUADRANT WINDS TO 25 KT. SEAS TO 12
FT.

...STORM WARNING...
.INTENSIFYING LOW W OF AREA 42N156E 1004 MB MOVING NE 40 KT.
OVER FORECAST WATERS WITHIN 300 NM E SEMICIRCLE WINDS 25 TO 35
KT. SEAS 10 TO 13 FT.
.24 HOUR FORECAST LOW 55N174E 990 MB. OVER FORECAST WATERS
WITHIN 600 NM S SEMICIRCLE AND 360 NM NE QUADRANT WINDS 25 TO 40
KT. SEAS 8 TO 16 FT.
.36 HOUR FORECAST LOW 59N177W 970 MB. BETWEEN 180 NM AND 360 NM
E QUADRANT...ALSO WITHIN 300 NM S QUADRANT WINDS 40 TO 55 KT.
SEAS 12 TO 24 FT...HIGHEST S.
.48 HOUR FORECAST LOW 61N168W 964 MB. WITHIN 420 NM S AND SW
QUADRANTS WINDS 45 TO 60 KT. SEAS 18 TO 36 FT. ELSEWHERE WITHIN
240 NM N SEMICIRCLE...660 NM SW AND 420 NM SE QUADRANTS WINDS 35
TO 45 KT. SEAS 10 TO 28 FT...HIGHEST SW. ALSO WITHIN 840 NM SE
QUADRANT WINDS 25 TO 35 KT. SEAS 9 TO 18 FT.

...GALE WARNING...
.LOW 50N150W 984 MB MOVING SE 30 KT. WITHIN 240 NM W QUADRANT
WINDS 35 TO 45 KT. SEAS 19 TO 29 FT. ELSEWHERE BETWEEN 150W AND
A LINE FROM 57N153W TO 46N165W TO 30N165W...AND WITHIN 150 NM N
AND NE OF A FRONT FROM 55N150W TO 57N143W TO 56N137W TO 53N134W
WINDS 25 TO 40 KT. SEAS 12 TO 26 FT...EXCEPT N OF FRONT SEAS 10
TO 19 FT. ALSO WITHIN 420 NM E SEMICIRCLE WINDS TO 25 KT. SEAS 9
TO 18 FT.
.24 HOUR FORECAST LOW 38N145W 994 MB. EXCEPT AS DESCRIBED ABOVE
WITHIN 600 NM NW AND 540 NM SW QUADRANTS WINDS 25 TO 40 KT. SEAS
15 TO 29 FT. ELSEWHERE WITHIN 420 NM SE QUADRANT WINDS 20 TO 30
KT. SEAS 10 TO 16 FT.
.48 HOUR FORECAST LOW DISSIPATED. FROM 30N TO 45N BETWEEN 145W
AND 157W WINDS 20 TO 30 KT. SEAS 10 TO 20 FT.

...GALE WARNING...
.FROM 30N TO 35N BETWEEN 140W AND 148W WINDS 25 TO 35 KT. SEAS 8
TO 16 FT.
.24 HOUR FORECAST NEW LOW 42N140W 992 MB. WITHIN 540 NM SE
QUADRANT WINDS 25 TO 35 KT. SEAS 10 TO 16 FT. ELSEWHERE WITHIN
720 NM SE QUADRANT...AND OVER FORECAST WATERS FROM 42N TO 50N E
OF 133W WINDS 20 TO 30 KT. SEAS 8 TO 17 FT...HIGHEST N OF 42N.
.48 HOUR FORECAST LOW 54N133W 986 MB. WITHIN 300 NM SE QUADRANT
WINDS 25 TO 40 KT. SEAS 8 TO 16 FT. ELSEWHERE WITHIN 240 NM W
SEMICIRCLE...AND FROM 41N TO 47N E OF 130W WINDS 20 TO 30 KT.
SEAS TO 12 FT...EXCEPT E OF 130W SEAS 10 TO 16 FT.

...GALE WARNING...
.24 HOUR FORECAST WITHIN THE REGION BOUNDED BY A LINE FROM
56N158W TO 60N153W TO 58N148W TO 50N151W TO 48N158W TO 56N158W
AREA OF N TO NW WINDS 25 TO 40 KT. SEAS 8 TO 14 FT.
.48 HOUR FORECAST CONDITIONS DIMINISHED.

...GALE WARNING...
.24 HOUR FORECAST NEW LOW 39N169E 1012 MB. FRONT TO EXTEND FROM
43N172E TO THE LOW TO 33N162E. WITHIN 120 NM E AND 300 NM W OF
THE FRONT WINDS 25 TO 35 KT. SEAS 8 TO 14 FT.
.48 HOUR FORECAST LOW 39N173E 1012 MB. WITHIN 420 NM NW
SEMICIRCLE AND 180 NM SE QUADRANT WINDS 25 TO 35 KT. SEAS 8 TO
16 FT. ELSEWHERE FROM 30N TO 47N BETWEEN 165E AND 178W WINDS TO
25 KT. SEAS TO 12 FT.

...HEAVY FREEZING SPRAY WARNING...
.MODERATE TO HEAVY FREEZING SPRAY OVER ICE FREE FORECAST WATERS
N OF 62N W OF ALASKA.
.24 HOUR FORECAST LIGHT TO MODERATE FREEZING SPRAY N OF 63N W OF
ALASKA.
.48 HOUR FORECAST LITTLE CHANGE.

.SYNOPSIS AND FORECAST.

.LOW NW OF AREA 57N167E 1011 MB MOVING NE 30 KT. OVER FORECAST
WATERS WITHIN 540 NM SW AND 360 NM SE QUADRANTS WINDS 20 TO 30
KT. SEAS 10 TO 15 FT.
.24 HOUR FORECAST LOW DISSIPATED AND CONDITIONS DIMINISHED.

.BETWEEN 30N AND A LINE FROM 36N169E TO 32N170W WINDS 20 TO 30
KT. SEAS 8 TO 13 FT.
.24 HOUR FORECAST BETWEEN 30N AND A LINE FROM 35N167E TO 32N180W
WINDS TO 25 KT. SEAS TO 12 FT.
.48 HOUR FORECAST CONDITIONS DESCRIBED ABOVE WITH LOW 39N173E.

.DENSE FOG. VSBY OCCASIONALLY LESS THAN 1 NM WITHIN 120 NM E OF
A LINE FROM 50N174W TO 46N178W.
.24 HOUR FORECAST DENSE FOG FROM 44N TO 51N BETWEEN 174E AND
176W.
.48 HOUR FORECAST CONDITIONS IMPROVED.

.DENSE FOG. VSBY OCCASIONALLY LESS THAN 1 NM FROM 36N TO 43N
BETWEEN 125W AND 129W...ALSO WITHIN 120 NM OF 42N134W.
.24 HOUR FORECAST DENSE FOG BETWEEN 126W AND A LINE FROM 50N132W
TO 35N130W.
.48 HOUR FORECAST DENSE FOG WITHIN 90 NM OF 37N127W.

.HIGH 31N124W 1019 MB NEARLY STATIONARY.
.24 HOUR FORECAST LITTLE CHANGE.
.48 HOUR FORECAST HIGH 31N126W 1021 MB.

.HIGH 40N176W 1033 MB MOVING E 10 KT.
.24 HOUR FORECAST HIGH 40N173W 1031 MB.
.48 HOUR FORECAST HIGH 38N169W 1034 MB.

.HIGH 49N174E 1030 MB MOVING NE 35 KT.
.24 HOUR FORECAST HIGH 54N165W 1030 MB.
.48 HOUR FORECAST HIGH DISSIPATED.

.48 HOUR FORECAST HIGH 49N171E 1037 MB.

.FORECASTER REINHART. 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 TUE NOV 21.
24 HOUR FORECAST VALID 0600 UTC WED NOV 22.
48 HOUR FORECAST VALID 0600 UTC THU NOV 23.

.WARNINGS.

...GULF OF TEHUANTEPEC GALE WARNING...

.WITHIN 30 NM OF LINE FROM 16N95W TO 14N95.5W...INCLUDING THE
GULF OF TEHUANTEPEC...N TO NE WINDS 20 TO 25 KT. SEAS TO 9 FT.
WITHIN 120 NJ OF LINE FROM 11.5N96W TO 09N102W WINDS 20 KT OR
LESS. SEAS TO 9 FT PRIMARILY IN MIXED NE AND S SWELL.
.12 HOUR FORECAST WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT.
.24 HOUR FORECAST LITTLE CHANGE.
.42 HOUR FORECAST N OF 14.5N BETWEEN 94W AND 96W N WINDS 25 TO 35
KT. SEAS TO 10 FT.
.48 HOUR FORECAST WITHIN 45 NM OF LINE FROM 16N95W TO 13.5N95.5W
N TO NE WINDS 30 TO 40 KT. SEAS 10 TO 15 FT. ELSEWHERE WITHIN
75 NM OF LINE FROM 16N95W TO 14N95W TO 12.5N96W N TO NE WINDS 20
TO 30 KT. SEAS TO 11 FT.

.SYNOPSIS AND FORECAST.

.TROUGH FROM 30N138W TO 25N140W. W OF LINE FROM 30N132W TO
24N138W S WINDS 20 TO 30 KT. SEAS TO 11 FT.
.24 HOUR FORECAST TROUGH DISSIPATED...COLD FRONT APPROACH. W OF
LINE FROM 30N132W TO 26N136W SW WINDS 20 TO 25 KT. SEAS 8 TO 11
FT.
.48 HOUR FORECAST COLD FRONT FROM 30N138W TO 29N140W. W OF LINE
FROM 30N132W TO 24N140W WINDS 20 KT OR LESS. SEAS 8 TO 15 FT
PRIMARILY IN NW SWELL...HIGHEST SEAS AT 30N140W.

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

CONVECTION VALID AT 0900 UTC TUE NOV 21...

.TROUGH FROM 30N137W TO 24N140W...SCATTERED MODERATE ISOLATED
STRONG WITHIN 150 NM OF LINE FROM 30N136W TO 25N140W.

.INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...
MONSOON TROUGH FROM 09N84W TO 06N98W. ITCZ FROM 06N98W TO
11N140W.
TROUGH FROM 09N130W TO 15N128W. ISOLATED MODERATE TO STRONG
WITHIN 45 NM OF 06.5N78W AND WITHIN 180 NM OF LINE FROM
08N122W TO 12N130W TO 12N137W TO 08N139W.

$$
.FORECASTER NELSON. NATIONAL HURRICANE CENTER.



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