000
FZPN03 KNHC 180836
HSFEP2

HIGH SEAS FORECAST
NWS NATIONAL HURRICANE CENTER MIAMI FL
1030 UTC TUE APR 18 2023

SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 TUE APR 18.
24 HOUR FORECAST VALID 0600 UTC WED APR 19.
48 HOUR FORECAST VALID 0600 UTC THU APR 20.

.WARNINGS.

.NONE.

.SYNOPSIS AND FORECAST.

.WITHIN 30N117W TO 30N124W TO 29N123W TO 28N121W TO 28N119W TO
29N117W TO 30N117W WINDS 20 KT OR LESS. SEAS 8 TO 9 FT IN NW 
SWELL.
.24 HOUR FORECAST WITHIN 30N116W TO 30N118W TO 29N116W TO 
29N117W TO 29N115W TO 30N116W NW TO N WINDS 20 TO 25 KT. SEAS 9 
TO 10 FT IN NW SWELL. ELSEWHERE WITHIN 29N115W TO 30N140W TO 
26N140W TO 27N127W TO 26N115W TO 29N115W WINDS 20 KT OR LESS. 
SEAS 8 TO 10 FT IN NW TO N SWELL.
.48 HOUR FORECAST WITHIN 29N115W TO 30N128W TO 25N140W TO 
11N140W TO 08N130W TO 10N125W TO 29N115W WINDS 20 KT OR LESS. 
SEAS 8 TO 10 FT IN NW TO N SWELL.

.WITHIN 19N140W TO 15N133W TO 15N95W TO 19N140W...INCLUDING THE
GULF OF TEHUANTEPEC...NE WINDS 20 TO 25 KT. SEAS TO 8 FT.
.09 HOUR FORECAST CONDITIONS IMPROVE. WINDS 20 KT OR LESS. SEAS 
LESS THAN 8 FT.

.WITHIN 10N128W TO 14N134W TO 13N140W TO 07N140W TO 04N134W TO
07N121W TO 10N128W WINDS 20 KT OR LESS. SEAS 8 TO 9 FT IN N TO 
NE SWELL.
.24 HOUR FORECAST WITHIN 10N137W TO 12N140W TO 07N140W TO 
06N137W TO 07N136W TO 10N137W WINDS 20 KT OR LESS. SEAS 8 FT IN 
NE SWELL. WITHIN 19N140W TO 15N133W TO 15N132W TO 19N140W WINDS 
20 KT OR LESS. SEAS 8 FT IN N TO NE SWELL.
.48 HOUR FORECAST CONDITIONS MERGED WITH AREA OF NW TO N SWELL 
DESCRIBED ABOVE.

.06 HOUR FORECAST WITHIN 11.5N86.5W TO 11.5N87W TO 11N87W TO
10.5N87W TO 10.5N86.5W TO 10.5N86W TO 11.5N86.5W...INCLUDING THE
GULF OF PAPAGAYO...NE TO E WINDS 20 TO 25 KT. SEAS LESS THAN 8 
FT.
.15 HOUR FORECAST CONDITIONS IMPROVE. WINDS 20 KT OR LESS. SEAS 
LESS THAN 8 FT.

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

CONVECTION VALID AT 0800 UTC TUE APR 18...

.INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...
A SURFACE TROUGH EXTENDS FROM 10N75W TO 05N84W TO 06N89W TO 
03.5N104W. ITCZ CONTINUES FROM 03.5N105W TO 05N119W. A SECOND
ITCZ IS FROM 00.5S100W TO 01.5S110W TO BEYOND 02S120W. SCATTERED
MODERATE TO STRONG CONVECTION FROM 02.5N TO 08N BETWEEN 83W AND 
96W. SCATTERED MODERATE ISOLATED STRONG CONVECTION S OF 00N 
BETWEEN 88W AND 98W AND FROM 02.5N TO 09.5N BETWEEN 101W AND 
121W. SCATTERED STRONG CONVECTION S OF 01S W OF 116W. 

$$ 
.FORECASTER STRIPLING. NATIONAL HURRICANE CENTER.