143 
FZPN03 KNHC 211520
HSFEP2

HIGH SEAS FORECAST
NWS NATIONAL HURRICANE CENTER MIAMI FL
1630 UTC FRI SEP 21 2018

SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 SEP 21.
24 HOUR FORECAST VALID 1200 UTC SAT SEP 22.
48 HOUR FORECAST VALID 1200 UTC SUN SEP 23.

.WARNINGS.

.NONE.

.SYNOPSIS AND FORECAST.

.FROM 12N TO 18N W OF 135W WINDS 20 KT OR LESS. SEAS 8 FT 
PRIMARILY IN NE SWELL. 
.12 HOUR FORECAST WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT.

.GULF OF TEHUANTEPEC N WINDS 20 TO 25 KT. SEAS TO 8 FT.
.06 HOUR FORECAST WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT. .24 
HOUR FORECAST LITTLE CHANGE. 
.24 HOUR FORECAST GULF OF TEHUANTEPEC N WINDS 20 TO 25 KT. SEAS 
TO 8 FT. 
.36 HOUR FORECAST WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT.

.WITHIN 45 NM OF LINE FROM 11N86W TO 10.5N89W...INCLUDING
THE GULF OF PAPAGAYO...NE TO E WINDS 20 TO 25 KT. SEAS TO 8 FT.
.06 HOUR FORECAST 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 1500 UTC FRI SEP 21...

.INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...
MONSOON TROUGH FROM 10N85W TO 12N110W TO 11N120W. ANOTHER 
SEGMENT OF THE MONSOON TROUGH FROM A 1010 MB LOW NEAR 16N125W TO
10N140W. SCATTERED MODERATE TO ISOLATED STRONG WITHIN 270 NM OFF
THE COAST OF CENTRAL AMERICA AND SOUTHERN MEXICO FROM 10N TO 
20N...AND WITHIN 180 NM OF THE COAST OF COLOMBIA. SCATTERED 
MODERATE WITHIN 90 NM OF MONSOON TROUGH BETWEEN 133W AND 138W.

$$
.FORECASTER CHRISTENSEN. NATIONAL HURRICANE CENTER.