000
FZPN03 KNHC 162058
HSFEP2

HIGH SEAS FORECAST
NWS NATIONAL HURRICANE CENTER MIAMI FL 
2230 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 1800 UTC MON OCT 16.
24 HOUR FORECAST VALID 1800 UTC TUE OCT 17.
48 HOUR FORECAST VALID 1800 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 13N96W 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 101W 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 9 TO 13 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. REMAINDER OF AREA FROM 10N TO 15N BETWEEN 93W AND 99W 
WINDS 20 KT OR LESS. SEAS 8 TO 9 FT IN MIXED NE AND SW SWELL.

.SYNOPSIS AND FORECAST.

.LOW PRES NEAR 21N124W 1008 MB. WITHIN 180 NM NE SEMICIRCLE OF 
LOW WINDS 20 TO 30 KT. SEAS 8 TO 11 FT. ELSEWHERE FROM 14N TO 
24N BETWEEN 117W AND 127W WINDS 20 KT OR LESS. SEAS 8 TO 10 FT 
IN MIXED SWELL.
.24 HOUR FORECAST WEAKENING LOW PRES NEAR 23N127W 1010 MB. 
WITHIN 120 NM NE SEMICIRCLE WINDS 20 TO 25 KT. SEAS 8 TO 9 FT. 
.36 HOUR FORECAST LOW DISSIPATED. WINDS 20 KT OR LESS. SEAS LESS 
THAN 8 FT. 

.LOW PRES NEAR 13N135W 1007 MB. WITHIN 120 NM N SEMICIRCLE OF 
LOW WINDS 20 TO 25 KT. SEAS 8 TO 9 FT. ELSEWHERE FROM 11N TO 16N 
BETWEEN 130W AND 138W WINDS 20 KT OR LESS. SEAS 8 FT IN MIXED 
SWELL. 
.24 HOUR FORECAST TROUGH FROM 17N137W TO 12N139W. FROM 14N TO 
17N BETWEEN 135W AND 140W WINDS 20 KT OR LESS. SEAS TO 8 FT. 
.30 HOUR FORECAST WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT.

.WITHIN AREA BOUNDED BY 11N100W TO 03.4S110W TO 03.4S120W TO 
00N130W TO 12N125W TO 11N100W WINDS 20 KT OR LESS. SEAS 8 TO 9 
FT IN SE AND SW SWELL.
.24 HOUR FORECAST WITHIN AREA BOUNDED BY 13N110W TO 03N110W TO 
03N120W TO 13N120W TO 13N110W AND S OF 04N BETWEEN 130W AND 138W
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 2045 UTC MON OCT 16...

.LOW PRES NEAR 21N124W...SCATTERED MODERATE TO STRONG BETWEEN 90 
NM AND 240 NM IN THE NE QUADRANT. 

.INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH... 
THE MONSOON TROUGH EXTENDS ACROSS CENTRAL AMERICA NEAR 09N84W TO 
09N99W...THEN TRANSITIONS TO THE ITCZ AND CONTINUES TO 08N115W 
TO 12N125W TO 13N134W. THE ITCZ THEN RESUMES W OF LOW PRES NEAR 
13N135W 1007 MB NEAR 10N140W. SCATTERED MODERATE ISOLATED STRONG 
FROM 05N TO 09N E OF 80W...FROM 08N TO 12N BETWEEN 106W AND 
113W...AND FROM 10N TO 16N BETWEEN 131W AND 137W. 

$$

.FORECASTER COBB. NATIONAL HURRICANE CENTER.