191 
FZPN03 KNHC 212104
HSFEP2

HIGH SEAS FORECAST
NWS NATIONAL HURRICANE CENTER MIAMI FL
2230 UTC FRI AUG 21 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 FRI AUG 21.
24 HOUR FORECAST VALID 1800 UTC SAT AUG 22.
48 HOUR FORECAST VALID 1800 UTC SUN AUG 23.

.WARNINGS.

.NONE.

.SYNOPSIS AND FORECAST.

.FROM 10N TO 13N BETWEEN 100W AND 105W E TO SE WINDS 20 TO 25 KT. 
SEAS TO 2.5 M.
.24 HOUR FORECAST FROM 11N TO 16N BETWEEN 105W AND 110W E TO SE 
WINDS 20 TO 25 KT. SEAS 2.5 TO 3.0 M.
.48 HOUR FORECAST CONDITIONS MERGED WITH LOW PRESSURE. 

.LOW PRES NEAR 09N114.5W 1009 MB. WITHIN 120NM SW QUADRANT WINDS 20 
KT OR LESS. SEAS 2.5 M IN MIXED SWELL. 
.24 HOUR FORECAST LOW PRES...POSSIBLE TROPICAL CYCLONE...NEAR 
12N111W 1008 MB. WITHIN 150 NM SE SEMICIRCLE WINDS 20 TO 25 KT. SEAS 
2.5 TO 3.0 M. 
.48 HOUR FORECAST LOW PRES...POSSIBLE TROPICAL CYCLONE...NEAR 
13N115W 1007 MB. WITHIN 210 NM SE SEMICIRCLE AND 180 NM NW 
SEMICIRCLE OF LOW CENTER WINDS 20 TO 30 KT. SEAS 2.5 TO 3.5 M.

.S OF 06N BETWEEN 100W AND 112W WINDS 20 KT OR LESS. EAS 2.5 TO 3.0 
M IN MIXED SWELL.
.18 HOUR FORECAST WINDS 20 KT OR LESS. SEAS LESS THAN 2.5 M.

.N OF 14N BETWEEN 94.5W AND 95.5W...INCLUDING THE GULF OF 
TEHUANTEPEC...N WINDS 20 TO 25 KT. SEAS TO 2.5 M.
.24 HOUR FORECAST LITTLE CHANGE.
.48 HOUR FORECAST LITTLE CHANGE.

.FROM 09.5N TO 11.5N E OF 89W...INCLUDING THE GULF OF PAPAGAYO...NE 
TO E WINDS 20 TO 25 KT. SEAS TO 2.5 M.
.24 HOUR FORECAST LITTLE CHANGE.
.48 HOUR FORECAST LITTLE CHANGE.

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

CONVECTION VALID AT 2100 UTC FRI AUG 21...

.TROPICAL WAVE ALONG 91W...SCATTERED MODERATE CONVECTION IS FROM 
05N TO 12N BETWEEN 90W AND 95W. 

.TROPICAL WAVE ALONG 105W...SCATTERED MODERATE TO ISOLATED STRONG 
CONVECTION IS FROM 05N TO 17N BETWEEN 95W AND 112W.

.LOW PRES NEAR 9.0N114.5W 1009 MB. SCATTERED MODERATE TO ISOLATED 
STRONG WITHIN 90 NM S SEMICIRCLE OF LOW CENTER. 

.INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...
THE MONSOON TROUGH EXTENDS FROM 09N84W TO 10N105W TO 06N135W. THE 
ITCZ CONTINUES FROM 06N135W TO 08N140W. ASIDE FROM THE CONVECTION 
RELATED TO THE TROPICAL WAVES DESCRIBED ABOVE, SCATTERED MODERATE TO 
ISOLATED STRONG CONVECTION IS OBSERVED FROM 05N TO 07N BETWEEN 78W 
AND 81W...AND FROM 04N TO 12N W OF 112W.

$$
.FORECASTER GR. NATIONAL HURRICANE CENTER.