000
FZPN03 KNHC 170230
HSFEP2

HIGH SEAS FORECAST
NWS NATIONAL HURRICANE CENTER MIAMI FL
0430 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 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 16N95W TO 15N97W TO 13N97W TO 13N95W TO 14N95W TO
16N95W...INCLUDING THE GULF OF TEHUANTEPEC...N TO NE WINDS 30 TO
40 KT. SEAS 10 TO 15 FT. ELSEWHERE WITHIN 15N93W TO 16N95W TO 
14N100W TO 12N99W TO 11N96W TO 13N93W TO 15N93W N TO NE WINDS 20
TO 30 KT. SEAS 8 TO 13 FT.
.24 HOUR FORECAST WITHIN 15N95W TO 16N95W TO 16N96W TO 14N97W TO
14N95W TO 15N95W...INCLUDING THE GULF OF TEHUANTEPEC... N TO NE 
WINDS 30 TO 40 KT. SEAS 10 TO 15 FT. ELSEWHERE WITHIN 15N93W TO 
16N95W TO 15N97W TO 14N100W TO 13N99W TO 13N96W TO 15N93W NE TO 
E WINDS 20 TO 30 KT. SEAS 8 TO 13 FT. REMAINDER AREA WITHIN 
14N93W TO 16N96W TO 15N100W TO 09N99W TO 09N96W TO 14N93W WINDS 
20 KT OR LESS. SEAS 8 TO 11 FT IN N TO NE SWELL.
.42 HOUR FORECAST WITHIN 16N94W TO 16N95W TO 16N96W 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 15N95W TO 
15N96W TO 13N98W TO 12N98W TO 11N97W TO 12N95W TO 15N95W WINDS 20
KT OR LESS. SEAS 8 FT IN N TO NE SWELL.
.48 HOUR FORECAST WITHIN 16N94W TO 16N95W TO 16N96W TO 15N96W TO
15N95W TO 16N94W...INCLUDING THE GULF OF TEHUANTEPEC... N WINDS 
20 TO 25 KT. SEAS 8 FT.

...GALE WARNING...
.LOW PRES NEAR 12N103.5W 1006 MB. WITHIN 14N101W TO 15N104W TO 
12N105W TO 10N103W TO 11N102W TO 12N100W TO 14N101W WINDS 20 TO 
30 KT. SEAS 8 TO 11 FT. 
.18 HOUR FORECAST LOW PRES...POSSIBLE TROPICAL CYCLONE...NEAR
13N106W 1005 MB. WITHIN 14N106W TO 14N107W TO 13N106W TO 14N106W
WINDS 30 TO 40 KT. SEAS 11 TO 13 FT. ELSEWHERE WITHIN 15N101W TO
16N106W TO 15N108W TO 11N108W TO 12N104W TO 11N101W TO 15N101W 
WINDS 20 TO 30 KT. SEAS 8 TO 13 FT.
.24 HOUR FORECAST LOW PRES...POSSIBLE TROPICAL CYCLONE...NEAR
13.5N107W 1005 MB. WITHIN 15N107W TO 14N108W TO 13N107W TO 
13N106W TO 14N106W TO 15N107W WINDS 30 TO 45 KT. SEAS 11 TO 14 
FT. ELSEWHERE WITHIN 15N100W TO 16N106W TO 15N108W TO 11N108W TO
09N102W TO 15N100W WINDS 20 TO 30 KT. SEAS 8 TO 13 FT.
.48 HOUR FORECAST LOW PRES...POSSIBLE TROPICAL CYCLONE...NEAR
15N108W 1004 MB. WITHIN 16N106W TO 17N107W TO 17N108W TO 15N109W
TO 14N108W TO 14N106W TO 16N106W WINDS 30 TO 45 KT. SEAS 14 TO 
19 FT. ELSEWHERE WITHIN 18N102W TO 18N108W TO 15N110W TO 10N108W
TO 09N105W TO 11N104W TO 18N102W WINDS 20 TO 30 KT. SEAS 9 TO 14
FT. REMAINDER AREA WITHIN 18N102W TO 19N109W TO 16N113W TO 
04N113W TO 03N105W TO 09N101W TO 18N102W WINDS 20 KT OR LESS. 
SEAS 8 TO 10 FT IN MIXED SWELL.

.SYNOPSIS AND FORECAST.

.WITHIN 30N131W TO 30N140W TO 24N140W TO 28N133W TO 30N131W
WINDS 20 KT OR LESS. SEAS 8 TO 9 FT IN NW SWELL.
.24 HOUR FORECAST WITHIN 30N132W TO 30N140W TO 13N140W TO
18N135W TO 30N132W WINDS 20 KT OR LESS. SEAS 8 TO 9 FT IN NW
SWELL. 
.48 HOUR FORECAST WITHIN 30N121W TO 30N140W TO 09N140W TO 
19N128W TO 30N121W WINDS 20 KT OR LESS. SEAS 8 TO 13 FT IN NW
SWELL.

.18 HOUR FORECAST WITHIN 30N119W TO 30N122W TO 29N122W TO
29N120W TO 29N119W TO 30N119W WINDS 20 KT OR LESS. SEAS 8 FT IN N
SWELL.
.24 HOUR FORECAST WITHIN 30N119W TO 30N123W TO 29N122W TO 
29N120W 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 0230 UTC TUE OCT 17...

.INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...
MONSOON TROUGH FROM 11N86W TO LOW PRES NEAR 12N103.5W TO 09N115W
TO 08N133W TO 09N140W. SCATTERED MODERATE FROM 03N TO 13N 
BETWEEN 82W AND 96W. SCATTERED TO LOCALLY NUMEROUS MODERATE AND 
ISOLATED STRONG FROM 09N TO 18N BETWEEN 100W AND 110W. SCATTERED
MODERATE FROM 04N TO 09N BETWEEN 115W AND 135W.

$$
.FORECASTER AL. NATIONAL HURRICANE CENTER.