High Seas Forecast
Issued by NWS

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000
FZPN01 KWBC 170332
HSFEP1

HIGH SEAS FORECAST
NWS OCEAN PREDICTION CENTER WASHINGTON DC
0430 UTC TUE OCT 17 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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).

THE U.S. COAST GUARD IS CURRENTLY EXPERIENCING DEGRADATION IN
IMAGE QUALITY OF ALL HFFAX PRODUCTS. TROUBLESHOOTING OF THE
PROBLEM IS TAKING PLACE.

SECURITE

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

SYNOPSIS VALID 0000 UTC OCT 17.
24 HOUR FORECAST VALID 0000 UTC OCT 18.
48 HOUR FORECAST VALID 0000 UTC OCT 19.

.WARNINGS.

...STORM WARNING...
.LOW 54N179W 979 MB MOVING E 35 KT. BETWEEN 120 NM AND 360 NM SE
AND SW QUADRANTS WINDS 40 TO 50 KT. SEAS 17 TO 33 FT. ELSEWHERE
WITHIN 360 NM NE...1020 NM SE...660 NM SW...AND 300 NM NW
QUADRANTS WINDS 25 TO 40 KT. SEAS 11 TO 22 FT...HIGHEST SE AND
SW QUADRANTS.
.24 HOUR FORECAST LOW 55N154W 973 MB. FROM 45N TO 51N BETWEEN
151W AND 168W WINDS 50 TO 60 KT. SEAS 22 TO 42 FT. ELSEWHERE
FROM 44N TO 52N BETWEEN 149W AND 168W WINDS 40 TO 50 KT. SEAS 18
TO 30 FT. ALSO WITHIN 360 NM NW AND NE...1020 NM SE...AND 960 NM
SW QUADRANTS WINDS 25 TO 40 KT. SEAS 10 TO 20 FT.
.36 HOUR FORECAST LOW 55N146W 971 MB. FROM 45N TO 50N BETWEEN
144W AND 155W WINDS 50 TO 60 KT. SEAS 25 TO 45 FT. ELSEWHERE
WITHIN 90 NM EITHER SIDE OF A LINE FROM 50N129W TO 54N132W TO
56N135W TO 58N139W WINDS 40 TO 50 KT. SEAS 12 TO 22 FT.
.48 HOUR FORECAST LOW 53N138W 970 MB. WITHIN 420 NM SE...660 NM
SW...AND 480 NM W QUADRANTS WINDS 40 TO 50 KT. SEAS 22 TO 40 FT.
ELSEWHERE WITHIN 720 NM SE...1020 NM SW...780 NM NW...AND OVER
FORECAST WATERS BETWEEN 120 NM AND 360 NM NE QUADRANTS WINDS 25
TO 40 KT. SEAS 12 TO 24 FT.

...STORM WARNING...
.30 HOUR FORECAST LOW W OF FORECAST AREA 49N156E 994 MB. OVER
FORECAST WATERS FROM 44N TO 50N W OF 162E WINDS 25 TO 35 KT.
SEAS 8 TO 14 FT.
.42 HOUR FORECAST LOW 50N160E 985 MB. WITHIN 180 NM SE
SEMICIRCLE WINDS 40 TO 50 KT. SEAS 18 TO 30 FT.
.48 HOUR FORECAST LOW 50N162E 986 MB. WITHIN 240 NM S SEMICIRCLE
AND BETWEEN 180 NM AND 360 NM NE QUADRANT WINDS 40 TO 50 KT.
SEAS 17 TO 33 FT...HIGHEST S SEMICIRCLE. ELSEWHERE WITHIN 480 NM
E SEMICIRCLE WINDS 25 TO 40 KT. SEAS 10 TO 20 FT.

...GALE WARNING...
.LOW 54N131W 1003 MB MOVING E 15 KT. OVER FORECAST WATERS WITHIN
180 NM EITHER SIDE OF A LINE FROM 50N128W TO 42N142W WINDS 25 TO
35 KT. SEAS 8 TO 16 FT.
.24 HOUR FORECAST LOW DISSIPATED INLAND. CONDITIONS DESCRIBED
WITH LOW 55N154W ABOVE.

...GALE WARNING...
.OVER FORECAST WATERS FROM 34N TO 38N W OF 169E WINDS TO 25 KT.
SEAS TO 10 FT.
.18 HOUR FORECAST FROM 37N TO 40N W OF 162E WINDS 25 TO 35 KT.
SEAS 8 TO 14 FT.
.24 HOUR FORECAST LOW 38N162E 1012 MB. FROM 37N TO 42N W OF 176E
WINDS 25 TO 35 KT. SEAS 8 TO 14 FT.
.48 HOUR FORECAST LOW 46N175E 1005 MB. WITHIN 360 NM NE AND
SW...AND 660 NM SE QUADRANTS WINDS 25 TO 40 KT. SEAS 9 TO 18
FT...HIGHEST NE AND SE QUADRANTS.

.SYNOPSIS AND FORECAST.

.LOW 60N145W 996 MB MOVING E 05 KT. OVER FORECAST WATERS FROM
50N TO 60N BETWEEN 142W AND 153W WINDS 20 TO 30 KT. SEAS TO 8 FT.
.24 HOUR FORECAST LOW DISSIPATED. CONDITIONS DESCRIBED WITH LOW
55N154W IN WARNINGS SECTION ABOVE.

.FROM 47N TO 52N BETWEEN 153W AND 161W AREA OF W TO NW WINDS 20
TO 30 KT. SEAS TO 10 FT.
.24 HOUR FORECAST CONDITIONS DESCRIBED WITH LOW 55N154W IN
WARNINGS SECTION ABOVE.

.OVER FORECAST WATERS FROM 43N TO 51N W OF 170E WINDS 20 TO 30
KT. SEAS 8 TO 14 FT.
.24 HOUR FORECAST FROM 48N TO 55N BETWEEN 178W AND 170E WINDS 20
TO 30 KT. SEAS TO 12 FT.
.48 HOUR FORECAST...EXCEPT AS DESCRIBED IN WARNINGS SECTION
ABOVE...N OF 54N BETWEEN 166W AND 174W WINDS TO 25 KT. SEAS TO
10 FT.

.OVER FORECAST WATERS S OF 33N BETWEEN 145W AND 180W WINDS TO 25
KT. SEAS TO 10 FT.
.24 HOUR FORECAST S OF 33N BETWEEN 144W AND 155W...AND S OF 33N
BETWEEN 177W AND 173E WINDS TO 25 KT. SEAS TO 10 FT.
.48 HOUR FORECAST S OF 33N BETWEEN 174W AND 170E WINDS TO 25 KT.
SEAS TO 10 FT.

.24 HOUR FORECAST FROM 32N TO 34N BETWEEN 119W AND 121W WINDS TO
25 KT. SEAS TO 8 FT.
.48 HOUR FORECAST LITTLE CHANGE.

.DENSE FOG. VSBY OCCASIONALLY LESS THAN 1 NM WITHIN AN AREA
BOUNDED BY 41N174W TO 49N169W TO 42N159W TO 41N174W.
.24 HOUR FORECAST CONDITIONS IMPROVED.

.DENSE FOG. 48 HOUR FORECAST VSBY OCCASIONALLY LESS THAN 1 NM
WITHIN AN AREA BOUNDED BY 38N175E TO 46N175E TO 43N171W TO
38N175E.

.HIGH 35N159W 1029 MB MOVING W 20 KT.
.24 HOUR FORECAST HIGH 35N169W 1031 MB.
.48 HOUR FORECAST HIGH MERGED WITH HIGH 39N162W BELOW.

.HIGH 40N166E 1026 MB MOVING NE 30 KT.
.24 HOUR FORECAST HIGH 43N178W 1032 MB.
.48 HOUR FORECAST HIGH 39N162W 1033 MB.

.HIGH 44N155W 1023 MB MOVING E 45 KT.
.24 HOUR FORECAST HIGH 46N129W 1022 MB.
.48 HOUR FORECAST HIGH MOVED INLAND.

.48 HOUR FORECAST NEW HIGH 32N132W 1022 MB.

.FORECASTER FIGURSKEY. 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 OCT 17.
24 HOUR FORECAST VALID 0000 UTC WED OCT 18.
48 HOUR FORECAST VALID 0000 UTC THU OCT 19.

.WARNINGS.

...GALE WARNING...
.WITHIN 30 NM OF LINE FROM 16N95W TO 15N95W TO 14N96W INCLUDING
GULF OF TEHUANTEPEC...N TO NE WINDS 30 TO 40 KT. SEAS 9 TO 14
FT. ELSEWHERE WITHIN 60 NM OF LINE FROM 16N95W TO 15N95W TO
13N96W N TO NE WINDS 20 TO 30 KT. SEAS 8 TO 11 FT.
.24 HOUR FORECAST WITHIN 45 NM OF LINE FROM 16N95W TO 15N95W TO
14N95.5W...INCLUDING GULF OF TEHUANTEPEC...N TO NE WINDS 30 TO
40 KT. SEAS 10 TO 15 FT. ELSEWHERE WITHIN 60 NM OF LINE FROM
16N95W TO 15N95W TO 13.5N96W TO 12N97W N TO NE WINDS 20 TO 30
KT. SEAS 8 TO 12 FT. REMAINDER OF THE AREA BOUNDED BY 16N94W TO
09N95W TO 10N101W TO 16N96W TO 16N94W WINDS 20 KT OR LESS. SEAS
8 TO 10 FT IN MIXED NE AND SW SWELL.
.48 HOUR FORECAST WITHIN 30 NM OF LINE FROM 16N95W TO 14.5N95W
...INCLUDING GULF OF TEHUANTEPEC...N TO NE WINDS 30 TO 35 KT.
SEAS 9 TO 13 FT. ELSEWHERE WITHIN 45 NM OF LINE FROM 16N95W TO
15N95W TO 13.5N96W N TO NE WINDS 20 TO 30 KT. SEAS 8 TO 11 FT.
REMAINDER OF AREA BOUNDED BY 16N94W TO 10N96W TO 10N99W TO
16N96W TO 16N94W WINDS 20 KT OR LESS. SEAS 8 TO 9 FT IN MIXED NE
AND SW SWELL.

.SYNOPSIS AND FORECAST.

.LOW PRES NEAR 22N125W 1008 MB. WITHIN 150 NM NE SEMICIRCLE OF
LOW WINDS 20 TO 25 KT. SEAS 8 TO 11 FT. ELSEWHERE FROM 16N TO
24N BETWEEN 119W AND 126W WINDS 20 KT OR LESS. SEAS 8 TO 9 FT IN
MIXED SWELL.
.24 HOUR FORECAST WEAKENING LOW PRES NEAR 24N128W 1010 MB.
WITHIN 120 NM N SEMICIRCLE WINDS 20 KT OR LESS. SEAS 8 TO 9 FT.
.30 HOUR FORECAST LOW DISSIPATED. WINDS 20 KT OR LESS. SEAS LESS
THAN 8 FT.

.LOW PRES NEAR 13N137W 1007 MB. WITHIN 120 NM N SEMICIRCLE OF
LOW WINDS 20 TO 25 KT. SEAS 8 TO 9 FT. ELSEWHERE FROM 12N TO 16N
BETWEEN 132W AND 139W WINDS 20 KT OR LESS. SEAS 8 FT IN MIXED
SWELL.
.24 HOUR FORECAST TROUGH FROM 17N138W TO 12N140W. WINDS 20 KT OR
LESS. SEAS LESS THAN 8 FT.

.WITHIN AREA BOUNDED BY 12N102W TO 03.4S112W TO 03.4S120W TO
00N132W TO 15N115W TO 12N102W WINDS 20 KT OR LESS. SEAS 8 TO 9
FT IN SE AND SW SWELL.
.24 HOUR FORECAST WITHIN AREA BOUNDED BY 13N114W TO 10N114W TO
10N120W TO 13N118W TO 13N114W AND S OF 04N W OF 133W WINDS 20 KT
OR LESS. SEAS 8 FT IN SE AND SW SWELL.
.36 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 OCT 17...

.LOW PRES NEAR 22N125W...SCATTERED MODERATE WITHIN 150 NM IN THE
NE QUADRANT.

.INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...
THE MONSOON TROUGH EXTENDS ACROSS CENTRAL AMERICA NEAR 09N85W TO
08N92W...THEN TRANSITIONS TO THE ITCZ NEAR 09N105W AND CONTINUES
TO 09N115W TO 13N130W TO LOW PRES 1007 MB NEAR 13N137W.
SCATTERED MODERATE ISOLATED STRONG FROM 08N TO 11N BETWEEN 108W
AND 117W. SCATTERED MODERATE FROM 11N TO 15N BETWEEN 134W AND
137W.

$$

.FORECASTER COBB. NATIONAL HURRICANE CENTER.


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