000
FZPN03 KNHC 182118
HSFEP2

HIGH SEAS FORECAST
NWS NATIONAL HURRICANE CENTER MIAMI FL
2230 UTC THU NOV 18 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 THU NOV 18.
24 HOUR FORECAST VALID 1800 UTC FRI NOV 19.
48 HOUR FORECAST VALID 1800 UTC SAT NOV 20.

.WARNINGS.

...GALE WARNING...
.06 HOUR FORECAST WITHIN 15N94.5W TO 14.5N95W TO 16N95.5W TO 
16.5N95W TO 16N94.5W TO 15N94.5W...INCLUDING THE GULF OF 
TEHUANTEPEC...N WINDS 20 TO 30 KT. SEAS LESS THAN 8 FT.
.12 HOUR FORECAST WITHIN 14N95W TO 14N96W TO 16N95W TO 16N94W TO 
15N94W TO 14N95W...INCLUDING THE GULF OF TEHUANTEPEC...N WINDS 
20 TO 30 KT. SEAS 8 TO 10 FT.
.18 HOUR FORECAST WITHIN 15N94.5W TO 14.5N94.5W TO 15N95W TO 
16N95W TO 16N94W TO 15N94.5W...INCLUDING THE GULF OF 
TEHUANTEPEC...N TO NE WINDS 30 TO 35 KT. SEAS 8 TO 11 FT. 
ELSEWHERE WITHIN 14N94W TO 12N96W TO 13N97W TO 16N95W TO 16N94W 
TO 14N94W N TO NE WINDS 20 TO 30 KT. SEAS 8 TO 9 FT.
.24 HOUR FORECAST LITTLE CHANGE.
.36 HOUR FORECAST WITHIN 15N94W TO 14N95W TO 15N96W TO 16N95W TO 
16N94W TO 15N94W...INCLUDING THE GULF OF TEHUANTEPEC...N TO NE 
WINDS 30 TO 35 KT. SEAS 10 TO 12 FT. ELSEWHERE WITHIN 13N94W TO 
12N96W TO 12N98W TO 15N96W TO 15N94W TO 13N94W N TO NE WINDS 20 
TO 30 KT. SEAS 8 TO 10 FT.
.48 HOUR FORECAST WITHIN 16N95W TO 16N94W TO 14N95W TO 12N98W TO 
14N97W TO 16N95W...INCLUDING THE GULF OF TEHUANTEPEC...N TO NE 
WINDS 25 TO 30 KT. SEAS 8 TO 11 FT

.SYNOPSIS AND FORECAST.

.36 HOUR FORECAST TROUGH FROM 15N130W TO 12N131W. WITHIN 14N130W 
TO 13N132W TO 14N132W TO 15N131W TO 15N130W TO 14N130W E WINDS 
20 TO 25 KT. SEAS 8 FT.
.48 HOUR FORECAST WEAKENING TROUGH FROM 14N132W TO 12N133W. 
WITHIN 15N134W TO 14N133W TO 13N133W TO 13N135W TO 14N135W TO 
15N134W WINDS 20 KT OR LESS. SEAS TO 8 FT PRIMARILY IN N SWELL. 

.36 HOUR FORECAST WITHIN 10N87W TO 10N88W TO 11N87W TO 12N88W TO 
11N86W TO 10N87W...INCLUDING THE GULF OF PAPAGAYO...NE TO E 
WINDS 20 TO 25 KT. SEAS LESS THAN 8 FT.
.48 HOUR FORECAST LITTLE CHANGE.

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

CONVECTION VALID AT 2115 UTC THU NOV 18...

.TROUGH FROM 12N122W TO 09N126W. SCATTERED MODERATE TO STRONG 
FROM 09N TO 11N BETWEEN 121W AND 125W.

.SCATTERED MODERATE FROM 05N TO 08N BETWEEN 79W AND 86W...FROM
13N TO 18N BETWEEN 132W AND 135W AND FROM 11N TO 14N BETWEEN 91W 
AND 95W.

.INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...
MONSOON TROUGH AXIS EXTENDS FROM 10N85W TO 08N94W TO 09N105W TO 
08N114W TO 11N122W. ITCZ EXTENDS FROM 09N127W TO 08N13W. IT 
RESUMES AT 08N135W TO BEYOND 08N140W. SCATTERED MODERATE 
ISOLATED STRONG WITHIN 60 NM OF ITCZ BETWEEN 124W AND 127W. 
SCATTERED MODERATE WITHIN 120 NM S OF TROUGH BETWEEN 96W AND 
101W...WITHIN 120 NM N OF TROUGH BETWEEN 114W AND 120W...WITHIN 
60 NM S OF TROUGH 96W AND 102W AND BETWEEN 111W AND 114W. 

$$
.FORECASTER AGUIRRE. NATIONAL HURRICANE CENTER.