000
FZPN03 KNHC 170245
HSFEP2

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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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

.WARNINGS.

...GALE WARNING... 
.WITHIN 30 NM OF LINE FROM 16N95W TO 15N95W TO 14N96W INCLUDING 
GULF OF TEHUANTEPEC...N TO NE WINDS 30 TO 40 KT. SEAS 9 TO 14 
FT. ELSEWHERE WITHIN 60 NM OF LINE FROM 16N95W TO 15N95W TO 
13N96W N TO NE WINDS 20 TO 30 KT. SEAS 8 TO 11 FT. 
.24 HOUR FORECAST WITHIN 45 NM OF LINE FROM 16N95W TO 15N95W TO 
14N95.5W...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 BOUNDED BY 16N94W TO 
09N95W TO 10N101W TO 16N96W TO 16N94W 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 14.5N95W 
...INCLUDING GULF OF TEHUANTEPEC...N TO NE WINDS 30 TO 35 KT. 
SEAS 9 TO 13 FT. ELSEWHERE WITHIN 45 NM OF LINE FROM 16N95W TO 
15N95W TO 13.5N96W N TO NE WINDS 20 TO 30 KT. SEAS 8 TO 11 FT. 
REMAINDER OF AREA BOUNDED BY 16N94W TO 10N96W TO 10N99W TO 
16N96W TO 16N94W WINDS 20 KT OR LESS. SEAS 8 TO 9 FT IN MIXED NE 
AND SW SWELL.

.SYNOPSIS AND FORECAST.

.LOW PRES NEAR 22N125W 1008 MB. WITHIN 150 NM NE SEMICIRCLE OF 
LOW WINDS 20 TO 25 KT. SEAS 8 TO 11 FT. ELSEWHERE FROM 16N TO 
24N BETWEEN 119W AND 126W WINDS 20 KT OR LESS. SEAS 8 TO 9 FT IN 
MIXED SWELL.
.24 HOUR FORECAST WEAKENING LOW PRES NEAR 24N128W 1010 MB. 
WITHIN 120 NM N SEMICIRCLE WINDS 20 KT OR LESS. SEAS 8 TO 9 FT. 
.30 HOUR FORECAST LOW DISSIPATED. WINDS 20 KT OR LESS. SEAS LESS 
THAN 8 FT.  

.LOW PRES NEAR 13N137W 1007 MB. WITHIN 120 NM N SEMICIRCLE OF 
LOW WINDS 20 TO 25 KT. SEAS 8 TO 9 FT. ELSEWHERE FROM 12N TO 16N 
BETWEEN 132W AND 139W WINDS 20 KT OR LESS. SEAS 8 FT IN MIXED 
SWELL. 
.24 HOUR FORECAST TROUGH FROM 17N138W TO 12N140W. WINDS 20 KT OR 
LESS. SEAS LESS THAN 8 FT.

.WITHIN AREA BOUNDED BY 12N102W TO 03.4S112W TO 03.4S120W TO 
00N132W TO 15N115W TO 12N102W WINDS 20 KT OR LESS. SEAS 8 TO 9 
FT IN SE AND SW SWELL.
.24 HOUR FORECAST WITHIN AREA BOUNDED BY 13N114W TO 10N114W TO 
10N120W TO 13N118W TO 13N114W AND S OF 04N W OF 133W WINDS 20 KT 
OR LESS. SEAS 8 FT IN SE AND SW SWELL.
.36 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 0230 UTC TUE OCT 17...

.LOW PRES NEAR 22N125W...SCATTERED MODERATE WITHIN 150 NM IN THE 
NE QUADRANT. 

.INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH... 
THE MONSOON TROUGH EXTENDS ACROSS CENTRAL AMERICA NEAR 09N85W TO 
08N92W...THEN TRANSITIONS TO THE ITCZ NEAR 09N105W AND CONTINUES 
TO 09N115W TO 13N130W TO LOW PRES 1007 MB NEAR 13N137W. 
SCATTERED MODERATE ISOLATED STRONG FROM 08N TO 11N BETWEEN 108W 
AND 117W. SCATTERED MODERATE FROM 11N TO 15N BETWEEN 134W AND 
137W.

$$

.FORECASTER COBB. NATIONAL HURRICANE CENTER.