421
FZPN03 KNHC 140837
HSFEP2

HIGH SEAS FORECAST
NWS NATIONAL HURRICANE CENTER MIAMI FL
1030 UTC FRI AUG 14 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 0600 UTC FRI AUG 14.
24 HOUR FORECAST VALID 0600 UTC SAT AUG 15.
48 HOUR FORECAST VALID 0600 UTC SUN AUG 16.

.WARNINGS.

...TROPICAL STORM WARNING...
.TROPICAL STORM HERNAN NEAR 16.1N 131.9W 1004 MB AT 0900 UTC AUG
14 MOVING S OR 180 DEG AT 4 KT. MAXIMUM SUSTAINED WINDS 35 KT
GUSTS 45 KT. TROPICAL STORM FORCE WINDS WITHIN 40 NM N SEMICIRCLE
...0 NM SE QUADRANT AND 30 NM SW QUADRANT. SEAS 4 M OR GREATER
WITHIN 75 NM W SEMICIRCLE...60 NM NE QUADRANT AND 0 NM SE
QUADRANT WITH SEAS TO 4 M. ELSEWHERE WITHIN 20N128W TO 20N130W TO
19N133W TO 16N133W TO 16N132W TO 18N131W TO 20N128W WINDS 20 TO
33 KT. SEAS 2.5 TO 4.0 M. REMAINDER OF AREA WITHIN 20N128W TO
22N137W TO 25N140W TO 15N140W TO 16N137W TO 14N132W TO 20N128W
WINDS 20 KT OR LESS. SEAS 2.5 TO 3.5 M IN MIXED SWELL.
.12 HOUR FORECAST TROPICAL DEPRESSION HERNAN NEAR 15.9N 132.4W.
MAXIMUM SUSTAINED WINDS 30 KT GUSTS 40 KT.
.24 HOUR FORECAST POST-TROPICAL REMNANT LOW HERNAN NEAR 15.5N
133.9W. MAXIMUM SUSTAINED WINDS 30 KT GUSTS 40 KT. WITHIN 18N133W
TO 18N135W TO 17N135W TO 15N135W TO 15N133W TO 16N133W TO
18N133W WINDS 20 TO 30 KT. SEAS 2.5 TO 3.5 M. ELSEWHERE WITHIN
21N129W TO 24N138W TO 24N140W TO 15N140W TO 14N137W TO 15N134W TO
21N129W WINDS 20 KT OR LESS. SEAS 2.5 TO 3.0 M IN MIXED SWELL.
.48 HOUR FORECAST POST-TROPICAL REMNANT LOW HERNAN NEAR 15.1N
137.8W. MAXIMUM SUSTAINED WINDS 25 KT GUSTS 35 KT. WITHIN
19N135W TO 22N133W TO 22N135W TO 21N140W TO 14N140W TO 16N137W TO
19N135W WINDS 20 TO 25 KT. SEAS 2.5 TO 3.0 M IN MIXED SWELL.

FORECAST WINDS IN AND NEAR ACTIVE TROPICAL CYCLONES SHOULD BE
USED WITH CAUTION DUE TO UNCERTAINTY IN FORECAST TRACK...SIZE
AND INTENSITY.

.SYNOPSIS AND FORECAST.

.WITHIN 16N94W TO 16N95W TO 14N95W TO 14N94W TO 16N94W...
INCLUDING THE GULF OF TEHUANTEPEC...N WINDS 20 TO 25 KT. SEAS
LESS THAN 2.5 M.
.24 HOUR FORECAST LITTLE CHANGE...EXCEPT WINDS TO 30 KT AND SEAS
2.5 TO 3.0 M.
.48 HOUR FORECAST LITTLE CHANGE.

.WITHIN 11N86W TO 11N88W TO 11N89W TO 10N88W TO 10N87W TO 11N86W
...INCLUDING THE GULF OF PAPAGAYO...NE TO E WINDS 20 TO 25 KT.
SEAS LESS THAN 2.5 M.
.24 HOUR FORECAST LITTLE CHANGE.
.48 HOUR FORECAST WITHIN 12N87W TO 12N88W TO 10N90W TO 09N90W TO
11N86W TO 12N87W...INCLUDING THE GULF OF PAPAGAYO...NE TO E
WINDS 20 TO 30 KT. SEAS BUILDING TO 2.5 TO 3.0 M.

.WITHIN 03N96W TO 03N109W TO 05N113W TO 00N127W TO 03.4S120W TO
02S97W TO 03N96W WINDS 20 KT OR LESS. SEAS 2.5 TO 3.0 M IN S TO
SW SWELL.
.24 HOUR FORECAST WITHIN 00N105W TO 01N109W TO 00N112W TO
02S119W TO 03.4S120W TO 03.4S104W TO 00N105W WINDS 20 KT OR LESS.
SEAS 2.5 TO 3.0 M IN S TO SW SWELL.
.48 HOUR FORECAST WITHIN 01S98W TO 00N112W TO 02N116W TO 02N119W
TO 03.4S120W TO 03.4S97W TO 01S98W WINDS 20 KT OR LESS. SEAS 2.5
TO 3.0 M IN S TO SW SWELL.

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

CONVECTION VALID AT 0800 UTC FRI AUG 14...

.TROPICAL STORM HERNAN...NUMEROUS MODERATE ISOLATED STRONG
BETWEEN 180 NM AND 510 NM NE QUADRANT.

.INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...
MONSOON TROUGH EXTENDS FROM LOW PRES NEAR 10N74.5W TO 09.5N85W
TO 07N102W. ITCZ FROM 07N102W TO 10.5N112W TO 07.5N125W TO
09N130W. ISOLATED TO WIDELY SCATTERED MODERATE AND ISOLATED
STRONG FROM 03N TO 08N BETWEEN 77W AND 80W...FROM 02N TO 05.5N
BETWEEN 91W AND 101W...FROM 06N TO 11N BETWEEN 101W AND 107W...
FROM 06N TO 13N BETWEEN 107W AND 113W...AND WITHIN 360 NM S OF
MONSOON TROUGH BETWEEN 113W AND 130W. SIMILAR CONVECTION FROM 00N
TO 09N BETWEEN 130W AND 140W.

$$
.FORECASTER LEWITSKY. NATIONAL HURRICANE CENTER.