000
FZPN03 KNHC 202117
HSFEP2

HIGH SEAS FORECAST
NWS NATIONAL HURRICANE CENTER MIAMI FL
2230 UTC FRI AUG 20 2021

SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 20.
24 HOUR FORECAST VALID 1800 UTC SAT AUG 21.
48 HOUR FORECAST VALID 1800 UTC SUN AUG 22.

.WARNINGS.

.NONE.

.SYNOPSIS AND FORECAST.

.WITHIN 27N127W TO 28N132W TO 26N140W TO 30N140W TO 30N126W TO
27N127W WINDS 20 KT OR LESS. SEAS 8 TO 9 FT IN NE SWELL.
.24 HOUR FORECAST WITHIN 27N128W TO 26N132W TO 27N135W TO 
30N140W TO 30N125W TO 27N128W WINDS 20 KT OR LESS. SEAS 8 TO 10 
FT IN N TO NE SWELL.
.48 HOUR FORECAST CONDITIONS IMPROVE. WINDS 20 KT OR LESS. SEAS 
LESS THAN 8 FT.

.WITHIN 11N108W TO 10N111W TO 11N115W TO 12N113W TO 13N108W TO
11N108W WINDS 20 KT OR LESS. SEAS 8 TO 9 FT IN MIXED SW SWELL.
.24 HOUR FORECAST WITHIN 10N99W TO 11N111W TO 10N121W TO 14N111W
TO 14N106W TO 10N99W WINDS 20 KT OR LESS. SEAS 8 TO 9 FT IN 
MIXED SW SWELL.
.48 HOUR FORECAST WITHIN 12N105W TO 11N108W TO 12N110W TO 
12N114W TO 14N106W TO 12N105W WINDS 20 KT OR LESS. SEAS 8 TO 9 FT
IN SW TO W SWELL.

.WITHIN 05N91W TO 05N93W TO 06N93W TO 06N92W TO 06N91W TO 05N91W
WINDS 20 KT OR LESS. SEAS 8 FT IN SW SWELL.
.06 HOUR FORECAST CONDITIONS IMPROVE. WINDS 20 KT OR LESS. SEAS 
LESS THAN 8 FT.

.48 HOUR FORECAST LOW PRES...POSSIBLE TROPICAL CYCLONE...NEAR
19N106.5W 1004 MB. WITHIN 18N103W TO 18N104W TO 18N105W TO 
19N104W TO 18N103W SE WINDS 20 TO 25 KT. SEAS TO 8 FT. WITHIN 
15N97W TO 15N98W TO 16N98W TO 16N97W TO 15N97W E TO SE WINDS 20 
TO 25 KT. SEAS TO 8 FT.

.REMAINDER OF AREA WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT.

CONVECTION VALID AT 1800 UTC FRI AUG 20...

TROPICAL WAVE ALONG 99W...SCATTERED MODERATE ISOLATED STRONG FROM
08.5N TO 13N BETWEEN 93W AND 102W.

TROPICAL WAVE ALONG 114W...SCATTERED MODERATE ISOLATED STRONG 
FROM 09N TO 16N BETWEEN 106W AND 122W.

TROPICAL WAVE ALONG 128W...SCATTERED MODERATE ISOLATED STRONG 
FROM 09N TO 13N BETWEEN 123W AND 132W.

.INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...
MONSOON TROUGH AXIS EXTENDS FROM 11N74W TO 09N90W TO LOW PRES 
NEAR 17N105W 1008 MB TO 11.5N123W TO 13N140W. ASIDE FROM THE 
CONVECTION DESCRIBED IN THE TROPICAL WAVES SECTION, SCATTERED 
MODERATE TO STRONG CONVECTION IS N OF 04N E OF 93W, AND WITHIN 
120 NM OF TROUGH W OF 132W. 

$$
.FORECASTER STRIPLING. NATIONAL HURRICANE CENTER.