175 
FZPN03 KNHC 170248
HSFEP2

HIGH SEAS FORECAST
NWS NATIONAL HURRICANE CENTER MIAMI FL
0430 UTC MON APR 17 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 0000 UTC MON APR 17.
24 HOUR FORECAST VALID 0000 UTC TUE APR 18.
48 HOUR FORECAST VALID 0000 UTC WED APR 19.

.WARNINGS.

...GALE WARNING...
.06 HOUR FORECAST GULF OF TEHUANTEPEC N OF 15N N WINDS 20 TO 30
KT. SEAS LESS THAN 8 FT.
.12 HOUR FORECAST GULF OF TEHUANTEPEC N OF 15N N WINDS 30 TO 35 
KT. SEAS 8 TO 11 FT. ELSEWHERE WITHIN 15N94W TO 16N94W TO 16N95W 
TO 15N95W TO 14N95W TO 15N94W N WINDS 20 TO 30 KT. SEAS 8 TO 10 
FT.
.18 HOUR FORECAST WITHIN 15N94W TO 16N95W TO 14N96W TO 13N96W TO
13N95W TO 15N94W...INCLUDING THE GULF OF TEHUANTEPEC...N TO NE 
WINDS 20 TO 30 KT. SEAS TO 11 FT IN N TO NE SWELL. ELSEWHERE 
WITHIN 14N94W TO 15N94W TO 15N95W TO 14N96W TO 13N95W TO 14N94W 
WINDS 20 KT OR LESS. SEAS 8 TO 10 FT IN N SWELL.
.24 HOUR FORECAST GULF OF TEHUANTEPEC N OF 15.5N NW WINDS 20 TO 
25 KT. SEAS LESS THAN 8 FT. WITHIN 13N95W TO 14N95W TO 12N97W TO 
11N97W TO 11N96W TO 12N96W TO 13N95W WINDS 20 KT OR LESS. SEAS 8 
FT IN NE SWELL.
.33 HOUR FORECAST CONDITIONS IMPROVE. WINDS 20 KT OR LESS. SEAS 
LESS THAN 8 FT.

.SYNOPSIS AND FORECAST.

.WITHIN 11N117W TO 13N126W TO 12N139W TO 09N130W TO 07N122W TO
09N116W TO 11N117W WINDS 20 KT OR LESS. SEAS 8 TO 9 FT IN N 
SWELL.
.24 HOUR FORECAST WITHIN 11N121W TO 12N133W TO 14N133W TO 
12N140W TO 07N140W TO 06N127W TO 11N121W WINDS 20 KT OR LESS. 
SEAS 8 TO 9 FT IN N TO NE SWELL.
.48 HOUR FORECAST WITHIN 09N136W TO 11N137W TO 11N140W TO 
07N140W TO 08N137W TO 09N136W WINDS 20 KT OR LESS. SEAS 8 FT IN 
NE SWELL.

.24 HOUR FORECAST WITHIN 30N120W TO 30N120.5W TO 30N120W WINDS
20 KT OR LESS. SEAS 8 FT IN NW SWELL.
.48 HOUR FORECAST WITHIN 30N126W TO 29N129W TO 29N140W TO 
28N140W TO 29N129W TO 29N116W TO 30N126W WINDS 20 KT OR LESS. 
SEAS 8 TO 9 FT IN NW TO N SWELL.

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

CONVECTION VALID AT 0220 UTC MON APR 17...

.INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...
A SURFACE TROUGH EXTENDS FROM NEAR 10N75W TO 06N82W TO 07N88W TO
02N100W WHERE IT TRANSITIONS TO THE ITCZ AND CONTINUES TO 
02.5N109W TO 06.5N118W TO 04N134W TO BEYOND 05N140W. SCATTERED 
MODERATE TO STRONG CONVECTION IS E OF A LINE FROM 08.5N84W TO 
05.5N90W TO 03.4S98W TO THE COASTLINE. SCATTERED TO NUMEROUS 
MODERATE TO STRONG CONVECTION FROM 04N TO 10N W OF 112W.

$$
.FORECASTER STRIPLING. NATIONAL HURRICANE CENTER.