447 
FZPN03 KNHC 250315
HSFEP2

HIGH SEAS FORECAST
NWS NATIONAL HURRICANE CENTER MIAMI FL
0430 UTC TUE SEP 25 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 0000 UTC MON SEP 25.
24 HOUR FORECAST VALID 0000 UTC WED SEP 26.
48 HOUR FORECAST VALID 0000 UTC THU SEP 27.

.WARNINGS.

...GALE WARNING...

.LOW PRES 14N106W 1008 MB. WITHIN 150 NM NE SEMICIRCLE E TO SE 
WINDS 20 TO 25 KT. SEAS TO 9 FT. FROM 06N TO 12N BETWEEN 101W 
AND 117W WINDS 20 KT OR LESS. SEAS TO 9 FT PRIMARILY IN SW 
SWELL. POSSIBLE TROPICAL CYCLONE FORMATION. 
.24 HOUR FORECAST LOW PRES...POSSIBLE TROPICAL CYCLONE...NEAR 
16.5N 108.5W 1006 MB. WITHIN 150 NM N AND 120 NM S SEMICIRCLES 
WINDS 20 TO 25 KT. SEAS 8 TO 10 FT. FROM 09N TO 13N BETWEEN 104W
AND 112W WINDS 20 KT OR LESS. SEAS TO 8 FT IN SW SWELL.
.48 HOUR FORECAST LOW PRES...POSSIBLE TROPICAL CYCLONE...NEAR 
15.5N 111.5W 1004 MB. WITHIN 45 NM N SEMICIRCLE NE TO E WINDS 
30 TO 35 KT. SEAS 12 TO 15 FT. ELSEWHERE WITHIN 150 NM OF CENTER 
WINDS 20 TO 30 KT. SEAS 8 TO 12 FT.

.SYNOPSIS AND FORECAST.

.WITHIN 30 NM OF LINE FROM 11.5N86W TO 11N88W...INCLUDING THE 
GULF OF PAPAGAYO...E WINDS 20 TO 25 KT. SEAS TO 8 FT.
.18 HOUR FORECAST WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT.
.24 HOUR FORECAST WITHIN 30 NM OF LINE FROM 11.5N86W TO 
11.5N92W... INCLUDING THE GULF OF PAPAGAYO...E WINDS 20 TO 25 
KT. SEAS TO 8 FT.
.48 HOUR FORECAST NEW LOW PRES NEAR 10N93W 1007 MB. WITHIN 120 
NM N SEMICIRCLE E WINDS 20 TO 25 KT. SEAS TO 8 FT.

.WITHIN 15 NM OF LINE FROM 16N95W TO 14.5N95W...INCLUDING THE 
GULF OF TEHUANTEPEC...N TO NE WINDS 20 TO 25 KT. SEAS LESS THAN 
8 FT. 
.18 HOUR FORECAST WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT.
.24 HOUR FORECAST LITTLE CHANGE.  
.30 HOUR FORECAST WITHIN 15 NM OF LINE FROM 16N95W TO 14.5N95W...
INCLUDING THE GULF OF TEHUANTEPEC...N TO 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 0300 UTC TUE SEP 25...

.LOW PRES 14N106W...SCATTERED MODERATE ISOLATED STRONG WITHIN 
120 NM
E AND 210 NM W SEMICIRCLES OF LOW.

.TROPICAL WAVE FROM 04N99W TO 17N98W...SCATTERED MODERATE 
ISOLATED 
STRONG N OF 13N WITHIN 270 NM W OF WAVE AXIS.  

.TROUGH FROM 09N139W TO 17N138W...SCATTERED MODERATE ISOLATED 
STRONG N OF 11N WITHIN 180 NM OF TROUGH AXIS.

.INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...
MONSOON TROUGH FROM 09N76W TO 09N91W TO LOW PRES 14N106W TO 
12N112W TO 10N139W. SCATTERED MODERATE ISOLATED STRONG WITHIN 150
NM OF LINE FROM 09N80W TO 08N94W...WITHIN 180 NM OF 
10N109W...WITHIN 75 NM OF 17N116W...AND FROM 06N TO 14N BETWEEN 
120W AND 135W.  

$$
.FORECASTER NELSON. NATIONAL HURRICANE CENTER.