181
FZPN03 KNHC 211527
HSFEP2

HIGH SEAS FORECAST
NWS NATIONAL HURRICANE CENTER MIAMI FL
1630 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 1200 UTC FRI AUG 21.
24 HOUR FORECAST VALID 1200 UTC SAT AUG 22.
48 HOUR FORECAST VALID 1200 UTC SUN AUG 23.

.WARNINGS.

.NONE.

.SYNOPSIS AND FORECAST.

.FROM 10N TO 13N BETWEEN 97W AND 103W E TO SE WINDS 20 TO 25 KT.
SEAS 2.5 M.
.24 HOUR FORECAST FROM 11N TO 15N BETWEEN 104W AND 107W 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 09N115W 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
11N115.5W 1008 MB. WITHIN 150 NM SE SEMICIRCLE WINDS 20 TO 25 KT.
SEAS 2.5 TO 3.0 M IN S SWELL.
.48 HOUR FORECAST LOW PRES...POSSIBLE TROPICAL CYCLONE...NEAR
13N116W 1007 MB. WITHIN 180 NM E SEMICIRCLE AND 150 NM W 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.
.24 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 2.5 M.
.24 HOUR FORECAST LITTLE CHANGE.
.48 HOUR FORECAST LITTLE CHANGE.

.FROM 10N TO 11.5N E OF 90W...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 1500 UTC FRI AUG 21...

.TROPICAL WAVE ALONG 90W...SCATTERED MODERATE CONVECTION IS FROM
05N TO 11N BETWEEN 96W AND 110W.

.TROPICAL WAVE ALONG 104W...SCATTERED MODERATE TO ISOLATED STRONG
CONVECTION IS FROM 04N TO 17N BETWEEN 96W AND 110W.

.TROPICAL WAVE ALONG 115W...LOW PRES NEAR 8.5N115W 1009 MB.
SCATTERED SHOWERS ALONG WAVE AXIS.

.INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...
THE MONSOON TROUGH EXTENDS FROM 09N84W TO 10N104W TO 06N125W TO
08N136W. 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 128W.

$$
.FORECASTER GR. NATIONAL HURRICANE CENTER.