HIGH SEAS FORECAST 
NWS NATIONAL HURRICANE CENTER MIAMI FL 
1030 UTC SUN APR 22 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 0600 UTC SUN APR 22.
24 HOUR FORECAST VALID 0600 UTC MON APR 23.
48 HOUR FORECAST VALID 0600 UTC TUE APR 24.

.WARNINGS.

.NONE.

.SYNOPSIS AND FORECAST.

.FROM 11N TO 15N W OF 128W NE WINDS 20 TO 25 KT. SEAS 9 TO 10 FT. 
ELSEWHERE W OF LINE FROM 30N140W TO 23N131W TO 10N117W TO 07N140W 
WINDS 20 KT OR LESS. SEAS 8 TO 9 FT IN MIXED NE AND NW SWELL. 
.24 HOUR FORECAST W OF LINE FROM 24N140W TO 13N123W TO 08N129W 
WINDS 20 KT OR LESS. SEAS 8 TO 9 FT IN MIXED SWELL. 
.48 HOUR FORECAST FROM 09N TO 17N W OF 121W WINDS 20 KT OR LESS. 
SEAS 8 TO 9 FT IN MIXED SWELL.

.N OF LINE FROM 30N140W TO 23N131W TO 29N119W WINDS 20 KT OR 
LESS. SEAS 8 TO 9 FT IN NW SWELL.
.24 HOUR FORECAST N OF LINE FROM 30N120W TO 26.5N126W TO 29N133W 
WINDS 20 KT OR LESS. SEAS 8 FT IN NW SWELL.
.48 HOUR FORECAST WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT.

.WITHIN 30 NM OF LINE FROM 11N86W TO 10.5N88W...INCLUDING GULF OF 
PAPAGAYO...NE WINDS 20 TO 25 KT. SEAS TO 8 FT.
.12 HOUR FORECAST WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT.
.24 HOUR FORECAST LITTLE CHANGE.
.30 HOUR FORECAST WITHIN 30 NM OF LINE FROM 11N86W TO 10.5N87W... 
INCLUDING GULF OF PAPAGAYO...NE WINDS 20 TO 25 KT. SEAS LESS 
THAN 8 FT.
.36 HOUR FORECAST WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT.
.48 HOUR FORECAST WITHIN 30 NM OF LINE FROM 11N86W TO 10.5N87W... 
INCLUDING GULF OF PAPAGAYO...NE WINDS 20 TO 25 KT. SEAS LESS 
THAN 8 FT.

.06 HOUR FORECAST 3 OF 03S W OF 110W WINDS 20 KT OR LESS. SEAS 8 
FT IN SW SWELL.
.24 HOUR FORECAST S OF 02S W OF 90W WINDS 20 KT OR LESS. SEAS 8 
FT IN SW SWELL.
.48 HOUR FORECAST S OF LINE FROM 01.5S81W TO 01N98W TO 00N120W 
WINDS 20 KT OR LESS. SEAS 8 TO 9 FT IN SW SWELL.

.30 HOUR FORECAST GULF OF TEHUANTEPEC N OF 15N BETWEEN 94.5W AND 
95W N WINDS 20 TO 25 KT. SEAS LESS THAN 8 FT.
.36 HOUR FORECAST WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT.
.48 HOUR FORECAST GULF OF TEHUANTEPEC N OF 15.5N BETWEEN 94.5W 
AND 95W N WINDS 20 TO 25 KT. SEAS LESS THAN 8 FT.

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

CONVECTION VALID AT 0845 UTC SUN APR 22...

.INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...
TROUGH FROM 09N76W TO 09N86W TO 06N97W TO 06N102W. ITCZ CONTINUES 
FROM 06N102W TO 05N123W TO BEYOND 07N140W. SCATTERED MODERATE 
ISOLATED STRONG FROM 04N TO 08N BETWEEN 87W AND 95W...FROM 08N TO 
12N BETWEEN 112W AND 118W AND WITHIN 90 NM EITHER SIDE OF A LINE 
FROM 11N131W TO 08N140W. ISOLATED MODERATE AND STRONG FROM 03N TO 
10N BETWEEN 75W AND 83W.

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