000
FZPN03 KNHC 170830
HSFEP2

HIGH SEAS FORECAST
NWS NATIONAL HURRICANE CENTER MIAMI FL
1030 UTC TUE OCT 17 2023

SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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.

SECURITE

E PACIFIC FROM THE EQUATOR TO 30N E OF 140W AND 03.4S TO THE
EQUATOR E OF 120W

SYNOPSIS VALID 0600 UTC TUE OCT 17.
24 HOUR FORECAST VALID 0600 UTC WED OCT 18.
48 HOUR FORECAST VALID 0600 UTC THU OCT 19.

.WARNINGS.

...GALE WARNING...
.WITHIN 16N95W TO 15N96W TO 13N98W TO 13N97W TO 14N95W TO
16N95W...INCLUDING THE GULF OF TEHUANTEPEC...N TO NE WINDS 30 TO
40 KT. SEAS 10 TO 18 FT. ELSEWHERE WITHIN 16N94W TO 16N95W TO 
14N99W TO 11N99W TO 11N95W TO 16N94W N TO NE WINDS 20 TO 30 KT. 
SEAS 8 TO 11 FT.
.24 HOUR FORECAST WITHIN 16N95W TO 15N96W TO 14N96W TO 14N95W TO
15N95W TO 16N95W...INCLUDING THE GULF OF TEHUANTEPEC... N TO NE 
WINDS 30 TO 35 KT. SEAS 10 TO 14 FT. ELSEWHERE WITHIN 16N94W TO 
16N95W TO 15N97W TO 14N100W TO 13N99W TO 14N95W TO 16N94W NE TO 
E WINDS 20 TO 30 KT. SEAS 8 TO 12 FT. REMAINDER AREA WITHIN 
15N94W TO 16N95W TO 15N99W TO 09N99W TO 09N96W TO 11N94W TO 
15N94W WINDS 20 KT OR LESS. SEAS 8 TO 10 FT IN N TO NE SWELL.
.36 HOUR FORECAST WITHIN 16N94W TO 16N95W TO 16N96W TO 15N96W TO
14N96W TO 15N95W TO 16N94W...INCLUDING THE GULF OF 
TEHUANTEPEC... N TO NE WINDS 20 TO 30 KT. SEAS 8 TO 10 FT. 
ELSEWHERE WITHIN 14N95W TO 15N96W TO 14N97W TO 12N98W TO 11N96W 
TO 12N95W TO 14N95W WINDS 20 KT OR LESS. SEAS 8 FT IN N TO NE 
SWELL.
.48 HOUR FORECAST WITHIN 16N94W TO 16N95W TO 15N95W TO 15N94W TO
16N94W...INCLUDING THE GULF OF TEHUANTEPEC... N WINDS 20 TO 25 
KT. SEAS LESS THAN 8 FT.

...GALE WARNING...
.LOW PRES NEAR 13N104W 1005 MB. WITHIN 15N101W TO 15N105W TO 
12N106W TO 11N104W TO 12N100W TO 15N101W WINDS 20 TO 30 KT. SEAS
8 TO 12 FT.
.12 HOUR FORECAST LOW PRES...POSSIBLE TROPICAL CYCLONE...NEAR 
13.5N105.5W 1005 MB. WITHIN 15N105W TO 15N106W TO 14N105W TO 
14N104W TO 15N105W WINDS 30 TO 35 KT. SEAS 9 TO 13 FT. ELSEWHERE
WITHIN 16N101W TO 16N103W TO 15N107W TO 14N108W TO 11N107W TO 
11N101W TO 16N101W WINDS 20 TO 30 KT. SEAS 8 TO 11 FT.
.24 HOUR FORECAST LOW PRES...POSSIBLE TROPICAL CYCLONE...NEAR 
14.5N106.5W 1004 MB. WITHIN 16N106W TO 15N107W TO 14N107W TO 
14N106W TO 15N105W TO 16N106W WINDS 30 TO 45 KT. SEAS 11 TO 16 
FT. ELSEWHERE WITHIN 15N101W TO 16N104W TO 16N108W TO 13N107W TO
12N104W TO 12N100W TO 15N101W WINDS 20 TO 30 KT. SEAS 8 TO 12 
FT. REMAINDER AREA WITHIN 16N101W TO 17N108W TO 11N110W TO 
08N104W TO 08N102W TO 16N101W WINDS 20 KT OR LESS. SEAS 8 TO 11 
FT IN MIXED SWELL.
.48 HOUR FORECAST LOW PRES...POSSIBLE TROPICAL CYCLONE...NEAR 
16.5N107W 1003 MB. WITHIN 19N106W TO 19N107W TO 17N108W TO 
15N107W TO 15N106W TO 16N105W TO 19N106W WINDS 30 TO 45 KT. SEAS
16 TO 21 FT. ELSEWHERE WITHIN 17N101W TO 20N106W TO 19N110W TO 
15N109W TO 12N107W TO 11N104W TO 17N101W WINDS 20 TO 30 KT. SEAS
11 TO 16 FT. REMAINDER AREA WITHIN 16N102W TO 13N107W TO 20N109W
TO 15N114W TO 05N109W TO 09N102W TO 16N102W WINDS 20 KT OR LESS.
SEAS 8 TO 12 FT IN MIXED SWELL.

.SYNOPSIS AND FORECAST.

.WITHIN 30N131W TO 30N140W TO 23N140W TO 30N131W WINDS 20 KT OR
LESS. SEAS 8 TO 9 FT IN NW SWELL.
.24 HOUR FORECAST WITHIN 22N133W TO 30N135W TO 30N140W TO
12N140W TO 18N134W TO 22N133W WINDS 20 KT OR LESS. SEAS 8 TO 9
FT IN NW SWELL.
.48 HOUR FORECAST WITHIN 30N120W TO 30N140W TO 08N140W TO
13N132W TO 30N120W WINDS 20 KT OR LESS. SEAS 8 TO 13 FT IN NW
SWELL.

.12 HOUR FORECAST WITHIN 30N119W TO 30N122W TO 29N121W TO
29N120W TO 29.5N119.5W TO 30N119W WINDS 20 KT OR LESS. SEAS 8
FT IN N SWELL.
.24 HOUR FORECAST WITHIN 30N119W TO 30N124W TO 29N123W TO
28N121W TO 29N119W TO 30N119W WINDS 20 KT OR LESS. SEAS 8 TO 9
FT IN N SWELL.
.48 HOUR FORECAST CONDITIONS MERGED. 

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

CONVECTION VALID AT 0830 UTC TUE OCT 17...

.INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...
MONSOON TROUGH EXTENDS FROM 11N86W TO LOW PRES NEAR 13N104W
TO 09N120W TO 09N140W. SCATTERED MODERATE FROM 04N TO 14N 
BETWEEN 82W AND 100W. NUMEROUS MODERATE ISOLATED STRONG FROM 10N
TO 20N BETWEEN 100W AND 110W. SCATTERED MODERATE FROM 04N TO 11N
BETWEEN 110W AND 128W. 

$$
.FORECASTER AL. NATIONAL HURRICANE CENTER.