High Seas Forecast
Issued by NWS

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000
FZPN01 KWBC 211556
HSFEP1

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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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

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 1200 UTC OCT 21.
24 HOUR FORECAST VALID 1200 UTC OCT 22.
48 HOUR FORECAST VALID 1200 UTC OCT 23.

.WARNINGS.

...STORM WARNING...
.LOW 53N144W 974 MB MOVING NE 15 KT. FRONT EXTENDS FROM LOW
CENTER TO 53N135W TO 49N130W TO 46N125W TO 42N126W. WITHIN 120
NM E OF THE FRONT N OF 48N WINDS 40 TO 50 KT. SEAS 10 TO 13 FT.
ALSO WITHIN 180 NM N AND E OF THE FRONT...AND 300 NM S OF A
SECOND FRONT FROM 46N125W TO 44N137W TO 41N147W TO 37N158W WINDS
30 TO 45 KT. SEAS 10 TO 19 FT. ELSEWHERE WITHIN 120 NM N
SEMICIRCLE AND 480 NM SE QUADRANT WINDS 20 TO 30 KT. SEAS 9 TO
13 FT.
.24 HOUR FORECAST LOW 55N138W 990 MB. WITHIN 120 NM W AND SW
QUADRANTS WINDS 25 TO 35 KT. SEAS 10 TO 16 FT.
.48 HOUR FORECAST LOW DISSIPATED WITH CONDITIONS DIMINISHED.

...STORM WARNING...
.LOW 35N164E 1014 MB MOVING E 60 KT. WITHIN 240 NM N OF A FRONT
FROM 34N179E TO 35N170E TO LOW CENTER TO 34N160E. WINDS 25 TO 35
KT. SEAS 10 TO 18 FT.
.24 HOUR FORECAST LOW 37N161W 1000 MB. WITHIN 480 NM SE AND 120
NM NW SEMICIRCLES WINDS 30 TO 45 KT. SEAS 10 TO 18 FT.
.36 HOUR FORECAST LOW 41N152W 991 MB. WITHIN 360 NM S AND SE
QUADRANTS WINDS 35 TO 50 KT. SEAS 14 TO 24 FT.
.48 HOUR FORECAST LOW 47N143W 996 MB. FRONT TO EXTEND FROM
50N139W TO LOW CENTER TO 36N154W. WITHIN 180 NM W AND NW
QUADRANTS AND 300 NM E OF THE FRONT WINDS 30 TO 45 KT. SEAS 12
TO 22 FT.

...GALE WARNING...
.LOW 53N149W 974 MB MOVING E 15 KT. WITHIN 720 NM S...960 NM
SW...AND 180 NM N AND NW QUADRANTS WINDS 25 TO 40 KT. SEAS 12 TO
27 FT...EXCEPT IN N AND NW QUADRANTS 8 TO 12 FT.
.24 HOUR FORECAST LOW 51N136W 990 MB. WITHIN 480 NM S AND 300 NM
SW QUADRANTS WINDS 25 TO 40 KT. SEAS 14 TO 24 FT.
.48 HOUR FORECAST LOW DISSIPATED WITH CONDITIONS DIMINISHED.

...GALE WARNING...
.LOW 64N164W 986 MB MOVING S 10 KT. WITHIN 660 NM W QUADRANT
WINDS 25 TO 35 KT. SEAS 8 TO 14 FT.
.24 HOUR FORECAST LOW 61N163W 989 MB. WITHIN 660 NM W QUADRANT
WINDS 25 TO 35 KT. SEAS 8 TO 14 FT. ELSEWHERE WITHIN 360 NM SW
QUADRANT WINDS 20 TO 30 KT. SEAS TO 10 FT.
.48 HOUR FORECAST LOW DISSIPATED WITH NEW LOW TO FORM 60N169W
1000 MB. WITHIN 360 NM W AND SW QUADRANTS WINDS 20 TO 30 KT.
SEAS 8 TO 12 FT.

...GALE WARNING...
.24 HOUR FORECAST BETWEEN 31N AND A LINE FROM 44N160E TO 38N165E
TO 36N179E. WINDS 20 TO 30 KT. SEAS 9 TO 16 FT.
.48 HOUR FORECAST LOW 50N160E 978 MB. N OF 35N AND W OF 171E
WINDS 30 TO 45 KT. SEAS 12 TO 26 FT.

...GALE WARNING...
.24 HOUR FORECAST NEW LOW 51N163W 996 MB. WITHIN 240 NM S AND SE
AND 960 NM W QUADRANTS WINDS 20 TO 30 KT. SEAS 8 TO 14 FT.
.48 HOUR FORECAST LOW 57N155W 997 MB. WITHIN 180 NM SE
SEMICIRCLE WINDS 25 TO 35 KT. SEAS 8 TO 12 FT.

...GALE WARNING...
.48 HOUR FORECAST NEW LOW 32N160W 1003 MB. N OF 30N AND WITHIN
840 NM W AND NW QUADRANTS WINDS 25 TO 35 KT. SEAS 9 TO 15 FT.
ELSEWHERE WITHIN 420 NM E QUADRANT WINDS 20 TO 30 KT. SEAS 8 TO
14 FT.

.SYNOPSIS AND FORECAST.

.FROM 30N TO 35N BETWEEN 118W AND 124W N TO NW WINDS 20 TO 30
KT. SEAS 10 TO 18 FT.
.24 HOUR FORECAST 31N TO 35N BETWEEN 120W AND 124W N TO NW WINDS
TO 25 KT. SEAS 8 TO 13 FT.
.48 HOUR FORECAST FROM 32N TO 40N BETWEEN 122W AND 126W N WINDS
TO 25 KT. SEAS 8 TO 10 FT.

.24 HOUR FORECAST NEW LOW 55N152W 991 MB. WITHIN 120 NM S AND SW
QUADRANTS WINDS 20 TO 30 KT. SEAS 8 TO 12 FT.
.48 HOUR FORECAST LOW DISSIPATED AND CONDITIONS DIMINISHED.

.DENSE FOG. 48 HOUR FORECAST VSBY OCCASIONALLY LESS THAN 1 NM
FROM 40N TO 50N BETWEEN 134W AND 145W AND FROM 37N TO 50N W OF
165E.

.HIGH 32N131W 1026 MB NEARLY STATIONARY.
.24 HOUR FORECAST LITTLE CHANGE.
.48 HOUR FORECAST HIGH 38N131W 1030 MB.

.HIGH JUST W OF AREA 47N158E 1036 MB MOVING E 15 KT.
.24 HOUR FORECAST HIGH 45N167E 1037 MB.
.48 HOUR FORECAST HIGH 40N177E 1032 MB.

.FORECASTER ACHORN. 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 SAT OCT 21.
24 HOUR FORECAST VALID 1200 UTC SUN OCT 22.
48 HOUR FORECAST VALID 1200 UTC MON OCT 23.

.WARNINGS.

...GALE WARNING...
.36 HOUR FORECAST WITHIN AREA BOUNDED BY 15N95W TO 15N96W TO
16N95W TO 16N94W TO 15N95W...INCLUDING THE GULF OF
TEHUANTEPEC... N WINDS 20 TO 30 KT. SEAS LESS THAN 8 FT.
.48 HOUR FORECAST WITHIN AREA BOUNDED BY 14N94W TO 12N95W TO
12N97W TO 13N97W TO 16N96W TO 16N94W TO 14N94W...INCLUDING THE
GULF OF TEHUANTEPEC... N TO NE WINDS 25 TO 35 KT. SEAS 8 TO 10
FT.

.SYNOPSIS AND FORECAST.

.WITHIN AREA BOUNDED BY 24N112W TO 24N115W TO 25N116W TO 30N119W
TO 30N116W TO 29N114W TO 24N112W...INCLUDING SEBASTIAN VIZCAINO
BAY AND WITHIN 60 NM OF SHORE...NW TO N WINDS 20 TO 25 KT. SEAS
8 TO 13 FT. ELSEWHERE WITHIN AREA BOUNDED BY 11N133W TO 10N140W
TO 30N140W TO 30N120W TO 23N113W TO 11N133W WINDS 20 KT OR LESS.
SEAS 9 TO 14 FT IN NW SWELL.
.24 HOUR FORECAST WITHIN AREA BOUNDED BY 06N120W TO 02N140W TO
30N140W TO 30N116W TO 18N107W TO 06N120W WINDS 20 KT OR LESS.
SEAS 8 TO 12 FT IN NW SWELL.
.48 HOUR FORECAST WITHIN AREA BOUNDED BY 03N104W TO 03S109W TO
00S140W TO 30N140W TO 30N116W TO 19N107W TO 03N104W WINDS 20 KT
OR LESS. SEAS 8 TO 9 FT IN NW SWELL.

.24 HOUR FORECAST GULF OF CALIFORNIA N OF 29N NW TO N WINDS 20
TO 25 KT. SEAS LESS THAN 8 FT.
.48 HOUR FORECAST WITHIN GULF OF CALIFORNIA N OF 25N NW TO N
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 1500 UTC SAT OCT 21...

.INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...
MONSOON TROUGH FROM 08N82W TO 09N120W...WHERE IT TRANSITIONS TO
ITCZ AND CONTINUES W TO BEYOND 10N140W. SCATTERED MODERATE
FROM 07N TO 19N BETWEEN 95W AND 105W. SCATTERED MODERATE TO
ISOLATED STRONG FROM 07N TO 10N BETWEEN 112W AND 117W...AND FROM
08N TO 10N BETWEEN 135W AND 140W.

$$
.FORECASTER CHRISTENSEN. NATIONAL HURRICANE CENTER.



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