000
FZPN03 KNHC 182106
HSFEP2

HIGH SEAS FORECAST 
NWS NATIONAL HURRICANE CENTER MIAMI FL 
2230 UTC WED APR 18 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 WED APR 18.
24 HOUR FORECAST VALID 1800 UTC THU APR 19.
48 HOUR FORECAST VALID 1800 UTC FRI APR 20.

.WARNINGS.

...GALE WARNING...
.30 HOUR FORECAST GULF OF TEHUANTEPEC N OF 15N BETWEEN 94.5W AND 
95.5W N WINDS 20 TO 30 KT. SEAS TO 10 FT.
.33 HOUR FORECAST WITHIN 15 NM OF LINE FROM 16N95W TO 
14.5N95W...INCLUDING GULF OF TEHUANTEPEC...N WINDS 30 TO 35 KT. 
SEAS 10 TO 13 FT. ELSEWHERE WITHIN 45 NM OF LINE FROM 16N95W TO 
14N95W N WINDS 20 TO 30 KT. SEAS 8 TO 10 FT.
.48 HOUR FORECAST WITHIN 30 NM OF LINE FROM 16N95W TO 14.5N95W TO 
12.5N96.5W...INCLUDING GULF OF TEHUANTEPEC...N TO NE WINDS 20 TO 
30 KT. SEAS 10 TO 14 FT. ELSEWHERE WITHIN AREA BOUNDED BY 16N95W 
TO 13N92W TO 09N97W TO 12N100W TO 16N95W WINDS 20 KT OR LESS. 
SEAS 8 TO 12 FT IN MIXED NE AND SW SWELL.

.SYNOPSIS AND FORECAST.

.N OF 23N BETWEEN 115W AND 121W WINDS 20 KT OR LESS. SEAS 8 TO 9 
FT IN NW SWELL. FROM 21N TO 23N W OF 133W WINDS 20 KT OR LESS. 
SEAS 8 FT IN MIXED NW AND NE SWELL. 
.24 HOUR FORECAST TROUGH FROM 04N129W TO 10N119W. FROM 10N TO 13N 
BETWEEN 127W AND 132W NE WINDS 20 TO 25 KT. SEAS 8 TO 9 FT. 
ELSEWHERE W OF LINE FROM 23N140W TO 16N116W TO 11N119W TO 
08N130W WINDS 20 KT OR LESS. SEAS 8 TO 9 FT IN MIXED SWELL. 
.48 HOUR FORECAST TROUGH FROM 03N130W TO 08N127W. WITHIN 90 NM OF 
LINE FROM 13N121W TO 13N125W TO 11N131W NE WINDS 20 TO 25 KT. 
SEAS 9 TO 11 FT. ELSEWHERE W OF LINE FROM 23N140W TO 17N118W TO 
11N115W TO 06N134W WINDS 20 KT OR LESS. SEAS 8 TO 10 FT IN MIXED 
SWELL.

.S OF LINE FROM 03.4S90W TO 08N96W TO 15N114W TO 00N126W WINDS 
20 KT OR LESS. SEAS 8 TO 10 FT IN MIXED SWELL.
.24 HOUR FORECAST S OF LINE FROM 03.4S91W TO 11N96W TO 11N106W TO 
03N122W WINDS 20 KT OR LESS. SEAS 8 TO 9 FT IN MIXED SWELL.
.48 HOUR FORECAST WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT.

.09 HOUR FORECAST WITHIN 30 NM OF LINE FROM 11N86W TO 
10.5N88.5W...INCLUDING GULF OF PAPAGAYO...NE WINDS 20 TO 25 KT. 
SEAS TO 9 FT.
.24 HOUR FORECAST WITHIN 60 NM OF LINE FROM 11N87W TO 09N92.5W 
WINDS 20 KT OR LESS. SEAS 8 TO 9 FT IN MIXED NE AND SW SWELL.
.33 HOUR FORECAST WITHIN 30 NM OF LINE FROM 11N86W TO 
10.5N88W...INCLUDING GULF OF PAPAGAYO...NE WINDS 20 TO 25 KT. 
SEAS TO 8 FT. FROM 08N TO 10.5N BETWEEN 90W AND 94W WINDS 20 KT 
OR LESS. SEAS 8 FT IN MIXED NE AND SW SWELL.
.48 HOUR FORECAST LITTLE CHANGE.

.30 HOUR FORECAST N OF 27N E OF 117W...INCLUDING SEBASTIAN 
VIZCAINO 
BAY...NW WINDS 20 TO 25 KT. SEAS TO 9 FT.
.36 HOUR FORECAST E OF LINE FROM 30N118W TO 24N115W NW TO N 
WINDS 20 TO 25 KT. SEAS TO 9 FT.
.48 HOUR FORECAST N OF 28.5N BETWEEN 117W AND 123W AND FROM 21N 
TO 26N BETWEEN 112W AND 116W 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 2015 UTC WED APR 18...

.INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...
SURFACE TROUGH FROM 07N77W TO 04N82W TO 07N90W. ITCZ CONTINUES 
FROM 07N90W TO 08N108W TO 04N124W TO 07N134W TO BEYOND 07N140W. 
SCATTERED MODERATE ISOLATED STRONG ALONG AND UP TO 90 NM N OF 
TROUGH AND ITCZ AXIS FROM 80W AND 98W AND WITHIN AN AREA BOUNDED 
BY 10N99W TO 06N101W TO 03N121W TO 14N119W TO 13N107W TO 10N99W. 

$$
.FORECASTER MCELROY. NATIONAL HURRICANE CENTER.