000
FZPN03 KNHC 161513
HSFEP2

HIGH SEAS FORECAST
NWS NATIONAL HURRICANE CENTER MIAMI FL 
1630 UTC MON OCT 16 2017

SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 1200 UTC MON OCT 16.
24 HOUR FORECAST VALID 1200 UTC TUE OCT 17.
48 HOUR FORECAST VALID 1200 UTC WED OCT 18.

.WARNINGS.

...GALE WARNING... 
.WITHIN 30 NM OF LINE FROM 16N95W TO 15N95W TO 
14N95.5W...INCLUDING GULF OF TEHUANTEPEC...N TO NE WINDS 30 TO 
35 KT. SEAS 9 TO 12 FT. ELSEWHERE WITHIN 60 NM OF LINE FROM 
16N95W TO 15N95W TO 13N96.5W N TO NE WINDS 20 TO 30 KT. SEAS 8 
TO 10 FT. 
.24 HOUR FORECAST WITHIN 30 NM OF LINE FROM 16N95W TO 15N95W TO 
13.5N96W...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 15N95W TO 13.5N96W TO 12N97W N TO NE WINDS 20 TO 30 
KT. SEAS 8 TO 12 FT. REMAINDER OF THE AREA FROM 10N TO 15N 
BETWEEN 93W AND 102W WINDS 20 KT OR LESS. SEAS 8 TO 10 FT IN 
MIXED NE AND SW SWELL.
.48 HOUR FORECAST WITHIN 30 NM OF LINE FROM 16N95W TO 15N95W TO 
14N95.5W...INCLUDING GULF OF TEHUANTEPEC...N TO NE WINDS 30 TO 
35 KT. SEAS 10 TO 13 FT. ELSEWHERE WITHIN 60 NM OF LINE FROM 
16N95W TO 15N95W TO 13N96W TO 12N97W N TO NE WINDS 20 TO 30 KT. 
SEAS 8 TO 12 FT. REMAINDER OF AREA FROM 10N TO 14N BETWEEN 93W 
AND 99W WINDS 20 KT OR LESS. SEAS 8 TO 10 FT IN MIXED NE AND SW 
SWELL.

.SYNOPSIS AND FORECAST.

.LOW PRES NEAR 20N123W 1007 MB. WITHIN 210 NM NE SEMICIRCLE OF 
LOW WINDS 20 TO 30 KT. SEAS 8 TO 11 FT. ELSEWHERE FROM 13N TO 
24N BETWEEN 115W AND 127W WINDS 20 KT OR LESS. SEAS 8 TO 10 FT 
IN MIXED SWELL.
.24 HOUR FORECAST WEAKENING LOW PRES NEAR 21N126W 1010 MB. 
WITHIN 90 NM NE SEMICIRCLE WINDS 20 TO 25 KT. SEAS 8 FT. 
ELSEWHERE FROM 20N TO 25N BETWEEN 122W AND 128W WINDS 20 KT OR 
LESS. SEAS TO 8 FT IN MIXED SWELL. 
.48 HOUR FORECAST LOW DISSIPATED. WINDS 20 KT OR LESS. SEAS LESS 
THAN 8 FT. 

.LOW PRES NEAR 12N135W 1006 MB. WITHIN 120 NM NE SEMICIRCLE OF 
LOW WINDS 20 TO 25 KT. SEAS 8 TO 9 FT. ELSEWHERE FROM 10N TO 17N 
BETWEEN 128W AND 138W WINDS 20 KT OR LESS. SEAS 8 TO 9 FT IN 
MIXED SWELL. 
.24 HOUR FORECAST TROUGH FROM 16N136W TO 12N139W. FROM 14N TO 
17N BETWEEN 135W AND 138W NW WINDS 20 TO 25 KT. SEAS TO 8 FT. 
.36 HOUR FORECAST WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT.

.S OF A LINE FROM 11N100W TO 13N116W TO 13N128W TO 07N133W WINDS 
20 KT OR LESS. SEAS 8 TO 9 FT IN SE AND SW SWELL.
.24 HOUR FORECAST S OF LINE FROM 08N106W TO 05N138W WINDS 20 KT 
OR LESS. SEAS 8 FT IN SE AND SW SWELL.
.48 HOUR FORECAST 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 1400 UTC MON OCT 16...

.INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH... 
THE MONSOON TROUGH EXTENDS ACROSS CENTRAL AMERICA NEAR 09N82W TO 
09N99W...THEN TRANSITIONS TO THE ITCZ AND CONTINUES TO 08N113W 
TO 11N121W. THE ITCZ THEN RESUMES W OF LOW PRES NEAR 12N136W 
1006 MB TO BEYOND 09N140W. SCATTERED MODERATE ISOLATED STRONG 
FROM 05N TO 09N E OF 80W...FROM 08N TO 14N BETWEEN 102W AND 
110W...AND FROM 11N TO 15N BETWEEN 131W AND 136W. 

$$

.FORECASTER LATTO. NATIONAL HURRICANE CENTER.