000
FZPN03 KNHC 210309
HSFEP2

HIGH SEAS FORECAST 
NWS NATIONAL HURRICANE CENTER MIAMI FL 
0430 UTC SAT APR 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 0000 UTC SAT APR 21.
24 HOUR FORECAST VALID 0000 UTC SUN APR 22.
48 HOUR FORECAST VALID 0000 UTC MON APR 23.

.WARNINGS.

.NONE.

.SYNOPSIS AND FORECAST.

.WITHIN 30 NM OF LINE FROM 16N95W TO 14.5N95W...INCLUDING GULF OF 
TEHUANTEPEC...N TO NE WINDS 20 TO 30 KT. SEAS 8 TO 11 FT. 
ELSEWHERE WITHIN AREA BOUNDED BY 16N95W TO 15N94W TO 09N95W TO 
09N101W TO 16N95W WINDS 20 KT OR LESS. SEAS 8 TO 9 FT IN MIXED N 
TO NE AND SW SWELL.
.18 HOUR FORECAST WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT.

.FROM 08N TO 13N W OF 138W NE WINDS 20 TO 25 KT. SEAS 9 FT. 
ELSEWHERE W OF LINE FROM 22N140W TO 14N112W TO 11N112W TO 
08N120W TO 05N140W WINDS 20 KT OR LESS. SEAS 8 TO 9 FT IN MIXED 
SWELL. 
.24 HOUR FORECAST FROM 10N TO 14N W OF 138W NE WINDS 20 TO 25 KT. 
SEAS 9 TO 10 FT. ELSEWHERE W OF LINE FROM 30N135W TO 12N123W TO 
08N127W TO 07N140W WINDS 20 KT OR LESS. SEAS 8 TO 9 FT IN MIXED 
SWELL. 
.48 HOUR FORECAST W OF LINE FROM 22N140W TO 13N126W TO 10N131W TO 
08N140W WINDS 20 KT OR LESS. SEAS 8 TO 9 FT IN MIXED SWELL.

.WITHIN 30 NM OF LINE FROM 11N86W TO 10.5N88.5W...INCLUDING GULF 
OF PAPAGAYO...NE WINDS 20 TO 25 KT. SEAS TO 8 FT IN MIXED NE AND 
SW SWELL.
.24 HOUR FORECAST LITTLE CHANGE.
.42 HOUR FORECAST WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT.
.48 HOUR FORECAST WITHIN 15 NM OF LINE FROM 11N86W TO 
11N88W...INCLUDING GULF OF PAPAGAYO...NE WINDS 20 TO 25 KT. SEAS 
LESS THAN 8 FT.

.18 HOUR FORECAST N OF 29N BETWEEN 120W AND 131W WINDS 20 KT OR 
LESS. SEAS 8 FT IN NW SWELL.
.24 HOUR FORECAST N OF LINE FROM 29N120W TO 27.5N132W WINDS 20 
KT OR LESS. SEAS 8 TO 9 FT IN NW SWELL.
.48 HOUR FORECAST N OF 27.5N BETWEEN 120W AND 132W WINDS 20 KT OR 
LESS. SEAS 8 TO 9 FT IN NW SWELL.

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

CONVECTION VALID AT 0245 UTC SAT APR 21...

.INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...
TROUGH FROM 07N77W TO 06N86W TO 05N113W. ITCZ CONTINUES FROM 
05N113W TO 05N125W TO BEYOND 06N140W. SCATTERED MODERATE 
ISOLATED STRONG FROM 05N TO 07N BETWEEN 86W AND 91W AND FROM 05N 
TO 09N BETWEEN 105W AND 112W.

$$
.FORECASTER MCELROY. NATIONAL HURRICANE CENTER.