137 
FZPN03 KNHC 200803
HSFEP2

HIGH SEAS FORECAST
NWS NATIONAL HURRICANE CENTER MIAMI FL
1030 UTC THU AUG 20 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 THU AUG 20.
24 HOUR FORECAST VALID 0600 UTC FRI AUG 21.
48 HOUR FORECAST VALID 0600 UTC SAT AUG 22.

.WARNINGS.

.NONE.

.SYNOPSIS AND FORECAST.

.LOW PRES...INVEST EP90...W OF AREA NEAR 11N141W 1007 MB. OVER
FORECAST WATERS WITHIN 12N139W TO 13N139W TO 13N140W TO 10N140W 
TO 11N139W TO 12N139W WINDS 20 TO 30 KT. SEAS 2.5 TO 3.0 M. 
ELSEWHERE WITHIN 15N139W TO 17N140W TO 13N140W TO 13N139W TO 
09N140W TO 13N138W TO 15N139W WINDS 20 KT OR LESS. SEAS 2.5 TO 
3.0 M IN E TO SE SWELL.
.24 HOUR FORECAST LOW PRES...INVEST EP90...POSSIBLE TROPICAL
CYCLONE...WELL W OF AREA. OVER FORECAST WATERS CONDITIONS 
IMPROVE. WINDS 20 KT OR LESS. SEAS LESS THAN 2.5 M.

.WITHIN 16N94W TO 16N95W TO 15N96W TO 15N95W TO 15N94W TO 16N94W
...INCLUDING THE GULF OF TEHUANTEPEC...N TO NE WINDS 20 TO 25 
KT. SEAS LESS THAN 2.5 M.
.24 HOUR FORECAST LITTLE CHANGE.
.48 HOUR FORECAST LITTLE CHANGE.

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

.WITHIN 02N96W TO 01N105W TO 04N113W TO 00N140W TO 03.4S120W TO
03.4S80W TO 02N96W...INCLUDING NEAR THE ENTRANCE TO THE GULF OF 
GUAYAQUIL AND EXCEPT LEE OF GALAPAGOS ISLANDS...WINDS 20 KT OR 
LESS. SEAS 2.5 TO 3.0 M IN SE TO S SWELL.
.24 HOUR FORECAST WITHIN 04N110W TO 07N114W TO 03N120W TO 00N134W
TO 03.4S120W TO 03.4S93W TO 04N110W WINDS 20 KT OR LESS. SEAS 2.5
TO 3.0 M IN SE TO S SWELL.
.48 HOUR FORECAST TROPICAL WAVE NEAR 108W. WITHIN 02N108W TO 
06N113W TO 02N120W TO 01S119W TO 01S108W TO 02N108W WINDS 20 KT 
OR LESS. SEAS 2.5 TO 3.0 M IN SE SWELL.

.18 HOUR FORECAST TROPICAL WAVE NEAR 101W. WITHIN 12N96W TO 
13N97W TO 13N101W TO 12N102W TO 11N102W TO 11N97W TO 12N96W WINDS
20 KT OR LESS. SEAS 2.5 TO 3.0 M IN MIXED E AND SE SWELL.
.24 HOUR FORECAST LITTLE CHANGE.
.48 HOUR FORECAST WITHIN 15N102W TO 16N106W TO 14N108W TO 
12N105W TO 13N102W TO 15N102W WINDS 20 KT OR LESS. SEAS 2.5 TO 
3.0 M IN SE TO S SWELL.

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

CONVECTION VALID AT 0610 UTC THU AUG 20...

.TROPICAL WAVE NEAR 76W...SCATTERED MODERATE ISOLATED STRONG 
FROM 06N TO 11N BETWEEN 77W AND 89W.

.TROPICAL WAVE NEAR 96.5W FROM 01N TO 17N...SCATTERED TO 
NUMEROUS MODERATE TO STRONG FROM 05N TO 14N BETWEEN 89W AND 98W.

.TROPICAL WAVE NEAR 111W FROM 01N TO 16N...SCATTERED TO NUMEROUS
MODERATE TO STRONG FROM 05N TO 12N BETWEEN 106W AND 115W.

.INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...
MONSOON TROUGH FROM LOW PRES NEAR 11N75W TO 08.5N90W TO LOW PRES
NEAR 08N111W TO 07N125W TO 10N140W. SCATTERED MODERATE ISOLATED 
STRONG FROM 04N TO 11N BETWEEN 129W AND 133W. SCATTERED MODERATE
FROM 10N TO 17N BETWEEN 130W AND 140W.

$$
.FORECASTER LEWITSKY. NATIONAL HURRICANE CENTER.