000
FZPN03 KNHC 200927
HSFEP2

HIGH SEAS FORECAST 
NWS NATIONAL HURRICANE CENTER MIAMI FL 
1030 UTC FRI APR 20 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 FRI APR 20.
24 HOUR FORECAST VALID 0600 UTC SAT APR 21.
48 HOUR FORECAST VALID 0600 UTC SUN APR 22.

.WARNINGS.

...GALE WARNING...
.WITHIN 30 NM OF A LINE FROM 16N95W TO 14N95W...INCLUDING GULF OF 
TEHUANTEPEC...N TO NE WINDS 30 TO 40 KT. SEAS 10 TO 15 FT. 
ELSEWHERE WITHIN 60 NM OF LINE FROM 16N95W TO 13N95W NE TO E 
WINDS 20 TO 30 KT. SEAS 8 TO 10 FT.
.09 HOUR FORECAST WITHIN 45 NM OF LINE FROM 16N95W TO 14.5N95W TO 
11N97W...INCLUDING GULF OF TEHUANTEPEC...N TO NE WINDS 20 TO 30 
KT. SEAS 10 TO 14 FT. ELSEWHERE WITHIN AREA BOUNDED BY 16N95W TO 
14N92W TO 09N97W TO 12N100W TO 16N95W WINDS 20 KT OR LESS. SEAS 
8 TO 11 FT IN MIXED NE AND SW SWELL.
.24 HOUR FORECAST GULF OF TEHUANTEPEC N OF 14N BETWEEN 94.5W AND 
95.5W N TO NE WINDS 20 TO 30 KT. SEAS 9 TO 12 FT. ELSEWHERE 
WITHIN AREA BOUNDED BY 16N95W TO 15N94W TO 08N94W TO 08N100W TO 
12N100W TO 16N95W WINDS 20 KT OR LESS. SEAS 8 TO 10 FT IN MIXED 
NE AND SW SWELL.
.36 HOUR FORECAST WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT.

.SYNOPSIS AND FORECAST.

.WITHIN 60 NM OF COAST OF BAJA CALIFORNIA N OF 23N...INCLUDING 
SEBASTIAN VIZCAINO BAY...NW WINDS 20 TO 25 KT. SEAS TO 8 FT. 
ELSEWHERE E OF LINE FROM 30N123W TO 23N115W WINDS 20 KT OR LESS. 
SEAS TO 9 FT IN NW SWELL.
.12 HOUR FORECAST N OF 29N E OF 122W AND FROM 22N TO 25N BETWEEN 
112W AND 116W WINDS 20 KT OR LESS. SEAS 8 FT IN NW SWELL.
.24 HOUR FORECAST N OF 28N E OF 120W WINDS 20 KT OR LESS. SEAS 8 
FT IN NW SWELL.
.48 HOUR FORECAST N OF LINE FROM 25N137W TO 23N134W TO 29N119W 
WINDS 20 KT OR LESS. SEAS 8 TO 9 FT IN NW SWELL.

.WITHIN 120 NM OF LINE FROM 14N121W TO 14N126W TO 09N132W TO 
08N138W NE WINDS 20 TO 25 KT. SEAS 9 TO 11 FT. ELSEWHERE W OF 
LINE FROM 23N140W TO 18N114W TO 13N114W TO 06N132W WINDS 20 KT 
OR LESS. SEAS 8 TO 9 FT IN MIXED SWELL. 
.24 HOUR FORECAST W OF LINE FROM 20N140W TO 12N119W TO 09N126W NE 
WINDS 20 TO 25 KT. SEAS 9 TO 12 FT. ELSEWHERE W OF LINE FROM 
30N137W TO 18N130W TO 15N115W TO 10N116W TO 04N140W WINDS 20 KT 
OR LESS. SEAS 8 TO 10 FT IN MIXED SWELL. 
.48 HOUR FORECAST W OF LINE FROM 28N140W TO 13N123W TO 06N125W 
WINDS 20 KT OR LESS. SEAS 8 TO 9 FT IN MIXED SWELL.

.S OF 02S BETWEEN 107W AND 118W AND FROM 09N TO 12N BETWEEN 95W 
AND 103W WINDS 20 KT OR LESS. SEAS 8 FT IN MIXED SW AND NW SWELL.
.06 HOUR FORECAST WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT.

.WITHIN 30 NM OF LINE FROM 11N86W TO 10.5N89W...INCLUDING GULF OF 
PAPAGAYO...NE WINDS 20 TO 25 KT. SEAS TO 9 FT.
.12 HOUR FORECAST WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT.
.18 HOUR FORECAST WITHIN 30 NM OF A LINE FROM 11N86W TO 
10.5N89W...INCLUDING GULF OF PAPAGAYO...NE WINDS 20 TO 25 KT. 
SEAS TO 8 FT.
.24 HOUR FORECAST LITTLE CHANGE.
.36 HOUR FORECAST WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT.
.42 HOUR FORECAST WITHIN 30 NM OF LINE FROM 11N86W TO 
10.5N88W...INCLUDING GULF OF PAPAGAYO...NE WINDS 20 TO 25 KT. 
SEAS LESS THAN 8 FT.
.48 HOUR FORECAST LITTLE CHANGE.

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

CONVECTION VALID AT 0845 UTC FRI APR 20...

.INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...
TROUGH FROM 07N81W TO 06N92W. ITCZ CONTINUES FROM 06N92W TO 
07N101W TO 07N118W TO 06N132W TO BEYOND 06N140W. SCATTERED 
MODERATE ISOLATED STRONG WITHIN 60 NM EITHER SIDE OF LINE FROM 
08N75W TO 03N79W, FROM 04N TO 07N BETWEEN 94W AND 98W AND FROM 
06N TO 12N BETWEEN 111W AND 125W. ISOLATED MODERATE AND STRONG 
FROM 04N TO 08N BETWEEN 81W AND 85W. 

$$
.FORECASTER MCELROY. NATIONAL HURRICANE CENTER.