000
FZPN03 KNHC 202122
HSFEP2

HIGH SEAS FORECAST
NWS NATIONAL HURRICANE CENTER MIAMI FL
2230 UTC MON SEP 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 MON SEP 20.
24 HOUR FORECAST VALID 1800 UTC TUE SEP 21.
48 HOUR FORECAST VALID 1800 UTC WED SEP 22.

.WARNINGS.

.NONE.

.SYNOPSIS AND FORECAST.

.LOW PRES NEAR 11.5N116W 1012 MB. FROM 07N TO 11N BETWEEN 115W 
AND 119W S TO SW WINDS 20 TO 25 KT. SEAS 8 FT.
.24 HOUR FORECAST LOW PRES NEAR 13N120W 1010 MB. WITHIN 60 NM NW 
QUADRANT WINDS 20 TO 25 KT. SEAS 8 TO 9 FT. ELSEWHERE FROM 10N 
TO 15N BETWEEN 111W AND 116W WINDS 20 KT OR LESS. SEAS 8 FT IN S 
SWELL. 
.48 HOUR FORECAST LOW PRES NEAR 15N121W 1008 MB. WITHIN 90 NM NW 
QUADRANT WINDS 20 TO 25 KT. SEAS 8 TO 9 FT. ELSEWHERE FROM 15N 
TO 17N BETWEEN 118W AND 120W WINDS 20 KT OR LESS. SEAS 8 FT IN S 
SWELL.

.N OF 29N BETWEEN 130W AND 136W WINDS 20 KT OR LESS. SEAS 8 FT 
IN NW SWELL.
.12 HOUR FORECAST N OF 28N BETWEEN 120W AND 128W WINDS 20 KT OR 
LESS. SEAS 8 TO 9 FT IN NW SWELL.
.24 HOUR FORECAST N OF 28N BETWEEN 121W AND 124W WINDS 20 KT OR 
LESS. SEAS 8 TO 9 FT IN NW SWELL.
.30 HOUR FORECAST WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT.

.36 HOUR FORECAST N OF 15N BETWEEN 94.5W AND 95.5W...INCLUDING 
THE GULF OF TEHUANTEPEC...N WINDS 20 TO 25 KT. SEAS LESS THAN 8 
FT. 
.42 HOUR FORECAST WITHIN 15 NM OF A LINE FROM 16N95W TO 15N95W 
TO 13.5N95.5W...INCLUDING THE GULF OF TEHUANTEPEC...N WINDS 20 
TO 25 KT. SEAS BUILDING TO 8 FT.
.48 HOUR FORECAST LITTLE CHANGE.

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

CONVECTION VALID AT 2100 UTC MON SEP 20...

.INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...
THE MONSOON TROUGH EXTENDS FROM 10N85W TO 11N100W A 1012 MB LOW 
PRESSURE NEAR 11.5N116W TO 09N131W. THE ITCZ CONTINUES FROM 
09N131W TO 07N140W. ASIDE FROM THE CONVECTION ASSOCIATED WITH 
THE TROPICAL WAVES, SCATTERED MODERATE CONVECTION IS FROM 05N TO 
10N E OF 90W TO THE COAST OF COLOMBIA, AND FROM 05N TO 10N 
BETWEEN 90W AND 100W. SCATTERED MODERATE TO ISOLATED STRONG 
CONVECTION IS NOTED FROM 10N TO 14N BETWEEN 114W AND 121W. THE 
LATTER CONVECTIVE ACTIVITY IS MAINLY ASSOCIATED WITH THE ABOVE 
MENTIONED LOW PRESSURE.

$$
.FORECASTER GR. NATIONAL HURRICANE CENTER.