000
FZPN03 KNHC 192117
HSFEP2

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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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

.WARNINGS.

...GALE WARNING...
.06 HOUR FORECAST GULF OF TEHUANTEPEC N OF 15N BETWEEN 94.5W AND 
95.5W N WINDS 25 TO 35 KT. SEAS 8 TO 10 FT.
.12 HOUR FORECAST WITHIN 30 NM OF A LINE FROM 16N95W TO 14N96W N 
TO NE WINDS 30 TO 40 KT. SEAS 10 TO 14 FT. ELSEWHERE WITHIN 60 
NM OF A LINE FROM 16N95W TO 13N95.5W NE TO E WINDS 20 TO 25 KT. 
SEAS 8 TO 10 FT.
.24 HOUR FORECAST WITHIN 30 NM OF LINE FROM 16N95W TO 14.5N95.5W 
TO 12N97W...INCLUDING GULF OF TEHUANTEPEC...N TO NE WINDS 20 TO 
30 KT. SEAS 10 TO 13 FT. ELSEWHERE WITHIN 75 NM OF LINE FROM 
16N95W TO 11N97W WINDS 20 KT OR LESS. SEAS 8 TO 11 FT IN MIXED 
NE AND SW SWELL.
.48 HOUR FORECAST WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT.

.SYNOPSIS AND FORECAST.

.FROM 08N TO 13N BETWEEN 127W AND 137W NE WINDS 20 TO 25 KT. 
SEAS 8 TO 10 FT. ELSEWHERE FROM 07N TO 23N W OF 118W WINDS 20 KT 
OR LESS. SEAS TO 8 FT IN NW SWELL. 
.24 HOUR FORECAST TROUGH FROM 07N127W TO 15N125W. FROM 10N TO 
16N BETWEEN 121W AND 130W NE WINDS 20 TO 25 KT. SEAS 8 TO 11 FT. 
ELSEWHERE W OF A LINE FROM 25N140W TO 14N108W TO 04N127W WINDS 
20 KT OR LESS. SEAS 8 TO 10 FT IN MIXED NE AND NW SWELL. 
.48 HOUR FORECAST TROUGH FROM 07N125W TO 15N122W. W OF A LINE 
FROM 30N120W TO 22N130W TO 10N113W TO 03N140W WINDS 20 KT OR 
LESS. SEAS 8 TO 10 FT IN MIXED NE AND NW SWELL. 

.S OF A LINE FROM 03.4S92W TO 11N96W TO 11N117W TO 00N120W WINDS 
20 KT OR LESS. SEAS 8 TO 9 FT IN MIXED SW AND NW SWELL.
.24 HOUR FORECAST WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT.

.12 HOUR FORECAST WITHIN 30 NM OF A LINE FROM 11N86W TO 
10N89W...INCLUDING GULF OF PAPAGAYO...NE WINDS 20 TO 25 KT. SEAS 
TO 8 FT.
.24 HOUR FORECAST WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT.
.36 HOUR FORECAST WITHIN 30 NM OF A LINE FROM 11N86W TO 
10N89W...INCLUDING GULF OF PAPAGAYO...NE WINDS 20 TO 25 KT. SEAS 
TO 8 FT.
.48 HOUR FORECAST WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT.

.06 HOUR FORECAST N OF 25N E OF 116W...INCLUDING SEBASTIAN 
VIZCAINO BAY...NW WINDS 20 TO 25 KT. SEAS TO 8 FT.
.24 HOUR FORECAST E OF LINE FROM 30N123W TO 21N115W WINDS 20 KT 
OR LESS. SEAS TO 8 FT IN NW SWELL. 
.48 HOUR FORECAST CONDITIONS MERGED WITH AREA OF SWELL TO THE W. 

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

CONVECTION VALID AT 1430 UTC THU APR 19...

.INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...
SURFACE TROUGH FROM 08N77W TO 06N93W. ITCZ FROM 06N93W TO 
07N115W TO 05N130W TO BEYOND 06N140W. SCATTERED MODERATE 
ISOLATED STRONG WITHIN 120 NM EITHER SIDE OF ITCZ AXIS BETWEEN 
91W AND 113W AND FROM 04N TO 13N BETWEEN 114W AND 132W. 

$$
.FORECASTER LATTO. NATIONAL HURRICANE CENTER.