High Seas Forecast
Issued by NWS

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000
FZPN01 KWBC 201626 CCA
HSFEP1

HIGH SEAS FORECAST...CORRECTED
NWS OCEAN PREDICTION CENTER WASHINGTON DC
1630 UTC FRI OCT 20 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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

CORRECTED TO ADD ADDITIONAL LOW IN SYNOPSIS AND FORECAST
SECTION.

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

SYNOPSIS VALID 1200 UTC OCT 20.
24 HOUR FORECAST VALID 1200 UTC OCT 21.
48 HOUR FORECAST VALID 1200 UTC OCT 22.

.WARNINGS.

...STORM WARNING...
.COMPLEX LOW WITH MAIN CENTER 53N172W 982 MB MOVING SE 25 KT AND
SECOND CENTER 52N162W 987 MB MOVING E 20 KT. FROM 44N TO 49N
BETWEEN 168W AND 176E WINDS 35 TO 50 KT. SEAS 17 TO 39 FT.
ELSEWHERE WITHIN 360 NM NE...660 NM SE...780 NM SW...AND 540 NM
NW QUADRANTS OF MAIN CENTER WINDS 25 TO 35 KT. SEAS 12 TO 27 FT
EXCEPT NE QUADRANT TO 12 FT.
.24 HOUR FORECAST LOW 53N150W 972 MB. FROM 43N TO 48N BETWEEN
145W AND 160W WINDS 30 TO 40 KT. SEAS 15 TO 26 FT. ELSEWHERE
WITHIN 1020 NM S AND 900 NM W QUADRANTS...AND 240 NM N
SEMICIRCLE WINDS 25 TO 35 KT. SEAS 12 TO 26 FT...HIGHEST NEAR
45N162W. ALSO WITHIN 360 NM N OF A LINE FROM 40N166W TO 51N166E
WINDS 20 TO 30 KT. SEAS 9 TO 19 FT.
.48 HOUR FORECAST LOW 52N140W 990 MB. WITHIN 540 NM S SEMICIRCLE
WINDS 25 TO 35 KT. SEAS 13 TO 21 FT. ELSEWHERE WITHIN 180 NM S
OF A FRONT FROM 45N124W TO 37N152W WINDS 20 TO 30 KT. SEAS 12 TO
17 FT.

...STORM WARNING...
.LOW 48N151W 993 MB MOVING NE 25 KT. EXCEPT WHERE NOTED ABOVE IN
PREVIOUS STORM WARNING...WITHIN 660 NM S AND 900 NM W QUADRANTS
WINDS 25 TO 40 KT. SEAS 10 TO 19 FT.
.24 HOUR FORECAST LOW 53N137W 978 MB. EXCEPT WHERE NOTED ABOVE
IN PREVIOUS STORM WARNING...WITHIN 120 NM E OF A LINE FROM
49N130W TO 56N139W WINDS 35 TO 50 KT. SEAS 10 TO 18 FT.
ELSEWHERE WITHIN 300 NM N SEMICIRCLE...AND 780 NM S AND SE
QUADRANTS WINDS 25 TO 40 KT. SEAS 10 TO 19 FT EXCEPT N
SEMICIRCLE 8 TO 13 FT.
.48 HOUR FORECAST LOW 57N140W 978 MB. WITHIN 180 NM OF CENTER
WINDS 25 TO 40 KT. SEAS 10 TO 17 FT.

...GALE WARNING...
.INLAND LOW 66N166W 988 MB MOVING S 10 KT. OVER FORECAST WATERS
WITHIN 360 NM W QUADRANT WINDS 25 TO 35 KT. SEAS 8 TO 13 FT.
.24 HOUR FORECAST LOW 63N166W 982 MB. WITHIN 600 NM W SEMICIRCLE
WINDS 25 TO 35 KT. SEAS 8 TO 15 FT.
.48 HOUR FORECAST LOW 61N164W 988 MB. WITHIN 900 NM W QUADRANT
WINDS 25 TO 35 KT. SEAS 8 TO 15 FT.

...GALE WARNING...
.FROM 32N TO 35N BETWEEN 117W AND 123W AREA OF NW WINDS TO 25
KT. SEAS 8 TO 14 FT WITH NW SWELL.
.24 HOUR FORECAST FROM 30N TO 36N BETWEEN 117W AND 123W AREA OF
NW WINDS 25 TO 35 KT. SEAS 10 TO 19 FT WITH NW SWELL.
.48 HOUR FORECAST FROM 30N TO 36N BETWEEN 121W AND 125W AREA OF
N WINDS TO 25 KT. SEAS 8 TO 12 FT WITH NW SWELL.

...GALE WARNING...
.FROM 34N TO 39N BETWEEN 160E AND 169E AREA OF E WINDS 20 TO 30
KT. SEAS 9 TO 13 FT.
.24 HOUR FORECAST NEW LOW 35N164E 1016 MB. WITHIN 240 NM N OF A
LINE FROM 35N160E TO 35N178E WINDS 25 TO 35 KT. SEAS 10 TO 17
FT.
.48 HOUR FORECAST LOW 36N164W 1000 MB. WITHIN 240 NM SE AND 180
NM NW SEMICIRCLES WINDS 30 TO 40 KT. SEAS 12 TO 16 FT. ELSEWHERE
WITHIN 540 NM SE AND 300 NM NW SEMICIRCLES...AND FROM 30N TO 40N
BETWEEN 170W AND 160E WINDS 25 TO 35 KT. SEAS 9 TO 16 FT.

.SYNOPSIS AND FORECAST.

.LOW 50N128W 997 MB MOVING SE 20 KT. FROM 36N TO 52N BETWEEN
126W AND 137W WINDS 20 TO 30 KT. SEAS 14 TO 21 FT WITH NW SWELL.
.24 HOUR FORECAST DISSIPATED LOW INLAND. N OF 36N AND E OF 130W
WINDS LESS THAN 25 KT. SEAS 9 TO 17 FT WITH NW SWELL.
.48 HOUR FORECAST CONDITIONS DESCRIBED ABOVE WITH LOW 52N140W.

.48 HOUR FORECAST NEW LOW 46N169W 1004 MB. FROM 40N TO 54N
BETWEEN 170W AND 172E WINDS 20 TO 30 KT. SEAS 8 TO 12 FT.

.48 HOUR FORECAST NEW LOW 53N162W 998 MB. WITHIN 240 NM S AND SE
QUADRANTS WINDS TO 25 KT. SEAS TO 11 FT.

.HIGH 33N156W 1029 MB MOVING SE 10 KT.
.24 HOUR FORECAST HIGH DISSIPATED.

.24 HOUR FORECAST NEW HIGH 33N131W 1027 MB.
.48 HOUR FORECAST HIGH 34N131W 1029 MB.

.48 HOUR FORECAST HIGH 47N166E 1035 MB.

.FORECASTER CLARK. 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 FRI OCT 20.
24 HOUR FORECAST VALID 1200 UTC SAT OCT 21.
48 HOUR FORECAST VALID 1200 UTC SUN OCT 22.

.WARNINGS.

.NONE.

.SYNOPSIS AND FORECAST.

.WITHIN 30 NM EITHER SIDE OF LINE FROM 16N95W TO 14N95W...
INCLUDING THE GULF OF TEHUANTEPEC...N TO NE WINDS 20 TO 25 KT.
SEAS TO 9 FT.
.24 HOUR FORECAST N OF 15N BETWEEN 94.5W AND 95.5W...INCLUDING
THE GULF OF TEHUANTEPEC...N WINDS 20 TO 25 KT. SEAS TO 8 FT.
.30 HOUR FORECAST WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT.

.FROM 01N TO 04N BETWEEN 112W AND 116W...S OF 01S W OF 112W
AND S OF 00N E OF 103W WINDS 20 KT OR LESS. SEAS 8 FT IN MIXED S
AND SE SWELL.
.24 HOUR FORECAST WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT.

.WEAKENING COLD FRONT FROM 30N131W TO 28N140W. FROM 22N TO 25 N
W OF 137W NE TO E WINDS 20 TO 25 KT. SEAS 8 TO 11 FT. N OF LINE
FROM 30N129W TO 25N140W WINDS 20 KT OR LESS. SEAS 12 TO 16 FT IN
NW SWELL. ELSEWHERE N OF LINE FROM 30N126W TO 22N140W WINDS 20
KT OR LESS. SEAS 8 TO 12 FT IN NW SWELL. N OF 28N E OF 117W NW
WINDS 20 TO 25 KT. SEAS TO 8 FT.
.24 HOUR FORECAST FRONT DISSIPATED. E OF LINE FROM 27N118W TO
30N124W NW TO N WINDS 20 TO 25 KT. SEAS 12 TO 16 FT. E OF LINE
FROM 25N112W TO 27N118W NW TO N WINDS 20 TO 25 KT. SEAS TO 12
FT. ELSEWHERE N OF LINE FROM 27N117W TO 21N131W TO 24N135W WINDS
20 KT OR LESS. SEAS 12 TO 15 FT IN NW SWELL. REMAINDER OF AREA N
OF LINE FROM 24N112W TO 11N134W TO 11N140W WINDS 20 KT OR LESS.
SEAS 8 TO 12 FT IN NW SWELL.
.36 HOUR FORECAST N OF 22N BETWEEN 115W AND 126W WINDS 20 KT OR
LESS. SEAS 12 TO 15 FT IN NW SWELL. ELSEWHERE N OF LINE FROM
19N111W TO 08N127W TO 08N140W WINDS 20 KT OR LESS. SEAS 8 TO 12
FT IN NW SWELL.
.48 HOUR FORECAST OUTSIDE OF GULF OF CALIFORNIA AND N OF LINE
FROM 16N108W TO 02N126W TO 01N140W WINDS 20 KT OR LESS. SEAS 8
TO 12 FT IN NW SWELL.

.36 HOUR FORECAST GULF OF CALIFORNIA N OF 27N NW WINDS 20 TO 25
KT. SEAS LESS THAN 8 FT.
.48 HOUR FORECAST GULF OF CALIFORNIA N OF 25N NW 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 1430 UTC FRI OCT 20...

.TROPICAL WAVE FROM 08N93W TO 16N94W. SCATTERED MODERATE
ISOLATED STRONG FROM 09N TO 12N BETWEEN 90W AND 97W.

.INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...
MONSOON TROUGH FROM 11N85W TO 08N100W TO 08N121W. ITCZ CONTINUES
FROM 08N121W TO 09N126W TO 08N132W TO BEYOND 09N140W. SCATTERED
MODERATE ISOLATED STRONG FROM 07N TO 09N BETWEEN 97W AND
104W...FROM 10N TO 12N BETWEEN 123W AND 129W AND FROM 13N TO 15N
BETWEEN 136W AND 139W.

$$
.FORECASTER MCELROY. NATIONAL HURRICANE CENTER.


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