000
FZPN03 KNHC 192118
HSFEP2

HIGH SEAS FORECAST
NWS NATIONAL HURRICANE CENTER MIAMI FL
2230 UTC TUE OCT 19 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 TUE OCT 19.
24 HOUR FORECAST VALID 1800 UTC WED OCT 20.
48 HOUR FORECAST VALID 1800 UTC THU OCT 21.

.WARNINGS.

.NONE.

.SYNOPSIS AND FORECAST.

.COLD FRONT NW OF AREA. WITHIN 29.5N139.5W TO 29.5N140W TO 
30N140W TO 30N138.5W TO 29.5N139.5W WINDS 20 KT OR LESS. SEAS 8 
TO 9 FT IN NW SWELL.
.24 HOUR FORECAST COLD FRONT FROM 30N138W TO 29N140W. WITHIN 
27N133W TO 25N140W TO 30N140W TO 30N128W TO 27N133W WINDS 20 KT 
OR LESS. SEAS 8 TO 12 FT IN NW SWELL.
.48 HOUR FORECAST DISSIPATING COLD FRONT FROM 30N136W TO 27N140W.
NEW COLD FRONT NEAR 30N140W. WITHIN 22N132W TO 18N134W TO 
17N140W TO 30N140W TO 30N121W TO 22N132W WINDS 20 KT OR LESS. 
SEAS 8 TO 10 FT IN NW SWELL.

.WITHIN 15N95W TO 14N96W TO 16N95W TO 15N95W...INCLUDING THE
GULF OF TEHUANTEPEC...N TO NE WINDS 20 TO 25 KT. SEAS LESS THAN 
8 FT.
.24 HOUR FORECAST LITTLE CHANGE.
.48 HOUR FORECAST LITTLE CHANGE.

.WITHIN 29N123W TO 28N126W TO 29N126W TO 30N126W TO 30N122W TO
29N123W WINDS 20 KT OR LESS. SEAS TO 8 FT IN NW SWELL.
.06 HOUR FORECAST CONDITIONS IMPROVE. WINDS 20 KT OR LESS. SEAS
LESS THAN 8 FT.

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

CONVECTION VALID AT 2100 UTC TUE OCT 19...

.INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...
MONSOON TROUGH FROM LOW PRES NEAR 11N75W TO LOW PRES NEAR 10N90W
TO 10N100W TO LOW PRES NEAR 12N111W TO 10N128W TO 12N140W. 
SCATTERED MODERATE ISOLATED STRONG FROM 03N TO 08N BETWEEN 77W 
AND 84W...FROM 10N TO 15N BETWEEN 97W AND 102W...AND FROM 07N TO
11N BETWEEN 125W AND 133W. SCATTERED MODERATE FROM 06N TO 08N 
BETWEEN 92W AND 100W...FROM 07N TO 11N BETWEEN 112W AND 122W... 
AND FROM 10N TO 14N BETWEEN 138W AND 140W.

$$
.FORECASTER LEWITSKY. NATIONAL HURRICANE CENTER.