000
FZPN03 KNHC 181503
HSFEP2

HIGH SEAS FORECAST
NWS NATIONAL HURRICANE CENTER MIAMI FL
1630 UTC WED OCT 18 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 WED OCT 18.
24 HOUR FORECAST VALID 1200 UTC THU OCT 19.
48 HOUR FORECAST VALID 1200 UTC FRI OCT 20.

.WARNINGS.

...GALE WARNING...
.WITHIN 30 NM EITHER SIDE OF A LINE FROM 16N95W TO 15N95W TO 
14N95.5W...INCLUDING THE GULF OF TEHUANTEPEC...N TO NE WINDS 30 
TO 40 KT. SEAS 10 TO 15 FT. ELSEWHERE WITHIN 60 NM EITHER SIDE 
OF LINE FROM 16N95W TO 15N95W TO 12N97W N TO NE WINDS 20 TO 30 
KT. SEAS 8 TO 13 FT. REMAINDER OF AREA FROM 09N TO 13N BETWEEN 
93W AND 100W WINDS 20 KT OR LESS. SEAS 8 TO 10 FT IN MIXED NE 
AND SW SWELL.
.24 HOUR FORECAST WITHIN 30 NM EITHER SIDE OF LINE FROM 16N95W 
TO 15N95W TO 14N95.5W...INCLUDING THE GULF OF TEHUANTEPEC...N TO 
NE WINDS 30 TO 35 KT. SEAS 9 TO 12 FT. ELSEWHERE WITHIN 60 NM 
EITHER SIDE OF LINE FROM 16N95W TO 14N95.5W TO 13N95.5W N TO NE 
WINDS 20 TO 30 KT. SEAS 8 TO 11 FT. REMAINDER OF AREA FROM 11.5N 
TO 13N BETWEEN 94W AND 98W WINDS 20 KT OR LESS. SEAS 8 TO 10 FT 
IN MIXED NE AND SW SWELL.
.30 HOUR FORECAST WITHIN 30 NM EITHER SIDE OF LINE FROM 16N95W 
TO 14N95.5W...INCLUDING THE GULF OF TEHUANTEPEC...N TO NE WINDS 
20 TO 30 KT. SEAS 8 TO 11 FT. ELSEWHERE WITHIN 45 NM EITHER SIDE 
OF LINE FROM 16N95W TO 14N95.5W TO 11.5N97W WINDS 20 KT OR LESS. 
SEAS 8 TO 9 FT IN MIXED NE AND SW SWELL.
.48 HOUR FORECAST WITHIN 30 NM EITHER SIDE OF LINE FROM 16N95W 
TO 13.5N95.5W...INCLUDING THE GULF OF TEHUANTEPEC...N TO NE 
WINDS 20 TO 30 KT. SEAS 8 TO 10 FT.

.SYNOPSIS AND FORECAST.

.06 HOUR FORECAST S OF 05N BETWEEN 132W AND 137W WINDS 20 KT OR 
LESS. SEAS 8 FT IN SE SWELL.
.24 HOUR FORECAST S OF 04N W OF 135W WINDS 20 KT OR LESS. SEAS 8 
FT IN SE SWELL. S OF 02S W OF 116W WINDS 20 KT OR LESS. SEAS 8 
FT IN S SWELL.
.36 HOUR FORECAST S OF 03N W OF 134W WINDS 20 KT OR LESS. SEAS 8 
FT IN SE SWELL. S OF 01S W OF 96W WINDS 20 KT OR LESS. SEAS 8 FT 
IN S SWELL.
.48 HOUR FORECAST S OF 02S W OF 114W AND S OF 01S BETWEEN 85W 
AND 102W WINDS 20 KT OR LESS. SEAS 8 FT IN S TO SW SWELL.

.36 HOUR FORECAST WEAKENING COLD FRONT FROM 30N130W TO 24N140W. 
N OF 29N W OF 138W WINDS 20 KT OR LESS. SEAS 8 TO 10 FT IN NW 
SWELL.
.48 HOUR FORECAST FRONT DISSIPATED. NW OF A LINE FROM 30N130W TO 
26N140W WINDS 20 KT OR LESS. SEAS 12 TO 16 FT IN NW SWELL. 
ELSEWHERE NW OF A LINE FROM 30N126W TO 22N140W WINDS 20 KT OR 
LESS. SEAS 8 TO 12 FT IN NW SWELL.

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

CONVECTION VALID AT 1430 UTC WED OCT 18...

.INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...
MONSOON TROUGH FROM 09N84W TO 08N100W TO 10N114W TO 10N118W. 
ITCZ CONTINUES FROM 10N118W TO 07N133W TO BEYOND 08N140W. 
SCATTERED MODERATE ISOLATED STRONG FROM 07N TO 11N BETWEEN 93W 
AND 95W...FROM 07N TO 10N BETWEEN 105W AND 112W AND FROM 06N TO 
12N BETWEEN 117W AND 128W.

$$
.FORECASTER MCELROY. NATIONAL HURRICANE CENTER.