939
FZPN03 KNHC 172125
HSFEP2

HIGH SEAS FORECAST
NWS NATIONAL HURRICANE CENTER MIAMI FL
2230 UTC THU SEP 17 2026

SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 1800 UTC THU SEP 17.
24 HOUR FORECAST VALID 1800 UTC FRI SEP 18.
48 HOUR FORECAST VALID 1800 UTC SAT SEP 19.

.WARNINGS.

...GALE WARNING...
.WITHIN 16N94W TO 16N95W TO 15N96W TO 14N96W TO 14N95W TO
16N94W...INCLUDING THE GULF OF TEHUANTEPEC...N TO NE WINDS 20 TO
30 KT. SEAS 2.5 TO 3 M. ELSEWHERE WITHIN 16N95W TO 13N98W TO
12N98W TO 11N96W TO 13N95W TO 16N95W NE WINDS 20 TO 30 KT. SEAS
2.5 TO 3 M.
.06 HOUR FORECAST WITHIN 15N94W TO 16N94W TO 16N95W TO 15N96W TO
14N96W TO 14N95W TO 15N94W...INCLUDING THE GULF OF
TEHUANTEPEC... N WINDS 25 TO 30 KT...EXCEPT 30 TO 35 KT N OF 24N.
SEAS 2.5 TO 3 M.
.12 HOUR FORECAST WITHIN 16N94W TO 16N95W TO 16N96W TO 14N96W TO
13N96W TO 14N95W TO 16N94W...INCLUDING THE GULF OF
TEHUANTEPEC...N TO NE WINDS 20 TO 30 KT. SEAS 2.5 TO 3 M.
.24 HOUR FORECAST WITHIN 16N95W TO 16N96W TO 15N96W TO 15N95W TO
16N95W...INCLUDING THE GULF OF TEHUANTEPEC...NE WINDS 20 TO 25
KT. SEAS LESS THAN 2.5 M.
.42 HOUR FORECAST WINDS 20 KT OR LESS. SEAS LESS THAN 2.5 M.

.SYNOPSIS AND FORECAST.

.TROPICAL WAVE ALONG 115.5W FROM 07N TO 18N WITH LOW PRES...INVEST
EP98...NEAR 12N115.5W 1009 MB. WINDS 20 KT OR LESS. SEAS LESS
THAN 2.5 M. SCATTERED SHOWERS AND TSTMS FROM 07N TO 11N BETWEEN
THE WAVE AND 118W AND FROM 11N TO 14N BETWEEN 111W AND 116W.
.18 HOUR FORECAST TROPICAL WAVE ALONG 118.5W S OF 18N WITH LOW
PRES...INVEST EP98...POSSIBLE TROPICAL CYCLONE...NEAR 12N118W
1008 MB. WITHIN 14N116W TO 15N117W TO 15N120W TO 12N119W TO
11N117W TO 13N116W TO 14N116W NE TO E WINDS 20 TO 25 KT. SEAS 2.5
TO 3 M.
.24 HOUR FORECAST TROPICAL WAVE ALONG 119W S OF 18N WITH LOW
PRES...INVEST EP98...POSSIBLE TROPICAL CYCLONE...NEAR 12N119W
1008 MB. WITHIN 12N119W TO 13N121W TO 13N124W TO 11N124W TO
10N122W TO 11N119W TO 12N119W WINDS 20 TO 25 KT. SEAS LESS THAN
2.5 M TO 3 M.
.48 HOUR FORECAST LOW PRES...INVEST EP98...POSSIBLE TROPICAL
CYCLONE...NEAR 11N121W 1007 MB. WITHIN 12N120W TO 13N121W TO
13N124W TO 11N123W TO 10N122W TO 11N119W TO 12N120W WINDS 20 TO
30 KT. SEAS LESS THAN 2.5 M TO 3.5 M.

.LOW PRES NEAR 15N133W 1006 MB. WITHIN 20N136W TO 21N138W TO
20N139W TO 18N139W TO 18N136W TO 19N136W TO 20N136W NE WINDS 20
TO 25 KT. SEAS 2.5 TO 3 M IN NE TO E SWELL. ELSEWHERE WITHIN
23N129W TO 24N137W TO 25N140W TO 13N140W TO 15N129W TO 18N126W TO
23N129W WINDS 20 KT OR LESS. SEAS 2.5 TO 3 M IN E SWELL.
.24 HOUR FORECAST LOW PRES NEAR 15N137W 1008 MB. WITHIN 20N134W
TO 23N140W TO 12N140W TO 14N135W TO 17N133W TO 20N134W WINDS 20
KT OR LESS...EXCEPT NE WINDS 20 TO 25 KT W OF 138W. SEAS 2.5 TO
3 M IN NE TO E SWELL.
.48 HOUR FORECAST LOW PRES NEAR 15N140W 1009 MB. WITHIN 21N130W
TO 23N132W TO 24N140W TO 17N139W TO 16N133W TO 17N129W TO 21N130W
NE TO E WINDS 20 TO 25 KT. SEAS 2.5 TO 3 M.

.TROPICAL WAVE ALONG 99W FROM 05N TO 17N. WINDS 20 KT OR LESS.
SEAS LESS THAN 2.5 M. SCATTERED SHOWERS AND TSTMS FROM 08N TO 13N
BETWEEN 94W AND 100W.
.18 HOUR FORECAST TROPICAL WAVE FROM 17N102W TO 05N104W. WITHIN
10N104W TO 11N106W TO 11N108W TO 10N109W TO 08N108W TO 08N104W TO
10N104W E WINDS 20 TO 25 KT. SEAS 2.5 TO 3 M.
.24 HOUR FORECAST TROPICAL WAVE FROM 17N103W TO 05N104.5W.
LITTLE CHANGE.
.48 HOUR FORECAST TROPICAL WAVE FROM 17N107W TO LOW PRES NEAR
11N121W 1009 MB. WITHIN 10N107W TO 10N109W TO 08N111W TO 06N109W
TO 06N107W TO 07N106W TO 10N107W SE TO S WINDS 20 TO 25 KT. SEAS
2.5 TO 3.0 M IN S TO SW SWELL.

.WITHIN 11N86W TO 11N88W TO 10N92W TO 09N91W TO 09N90W TO 10N87W
TO 11N86W...INCLUDING THE GULF OF PAPAGAYO...E WINDS 20 TO 25
KT. SEAS 2.5 TO 3 M.
.24 HOUR FORECAST WINDS 20 KT OR LESS. SEAS LESS THAN 2.5 M.

.30 HOUR FORECAST WITHIN 30N115W TO 29N116W TO 28N117W TO
26N116W TO 26N115W TO 27N114W TO 30N115W...INCLUDING SEBASTIAN
VIZCAINO BAY AND WITHIN 60 NM OF SHORE...NW TO N WINDS 20 TO 25
KT. SEAS LESS THAN 2.5 M.
.48 HOUR FORECAST WINDS 20 KT OR LESS. SEAS LESS THAN 2.5 M.

.REMAINDER OF AREA WINDS 20 KT OR LESS. SEAS LESS THAN 2.5 M.

CONVECTION VALID AT 2115 UTC THU SEP 17...

.LOW PRES NEAR 15N133W...NUMEROUS MODERATE ISOLATED STRONG FROM
14N TO 18N BETWEEN 129W AND 136W.

.TROPICAL WAVE ALONG 115.5W FROM 07N TO 18N WITH LOW PRES NEAR
12N115.5W...SCATTERED MODERATE FROM 07N TO 11N BETWEEN THE WAVE
AND 118W AND FROM 11N TO 14N BETWEEN 111W AND 116W.

.TROPICAL WAVE ALONG 99W FROM 05N TO 17N...NUMEROUS MODERATE
ISOLATED STRONG FROM 08N TO 13N BETWEEN 94W AND 100W.

.NUMEROUS MODERATE ISOLATED STRONG FROM 10N TO 16N BETWEEN 124W
AND 130W.

.SCATTERED MODERATE FROM 02N TO 07N BETWEEN 125W AND 132W...
FROM 14N TO 20N BETWEEN 120W AND 129W AND WITHIN 60 NM OF
14N103W.

.INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...
MONSOON TROUGH AXIS EXTENDS FROM 09N84W TO 07N1OOW TO 09N110W TO
LOW PRES NEAR 12N115.5W 1009 MB AND TO 12N124W. NUMEROUS
MODERATE ISOLATED STRONG FROM 08N TO 13N BETWEEN 100W AND 106W
AND FROM 06N TO 09N BETWEEN 118W AND 124W. SCATTERED MODERATE
WITHIN 120 NM S OF THE TROUGH BETWEEN 91W AND 95W.

$$
.FORECASTER AGUIRRE. NATIONAL HURRICANE CENTER.