000
FZPN03 KNHC 182121
HSFEP2

HIGH SEAS FORECAST
NWS NATIONAL HURRICANE CENTER MIAMI FL
2230 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 1800 UTC WED OCT 18.
24 HOUR FORECAST VALID 1800 UTC THU OCT 19.
48 HOUR FORECAST VALID 1800 UTC FRI OCT 20.

.WARNINGS.

...GALE WARNING...
.WITHIN 30 NM EITHER SIDE OF A LINE FROM 16N95W TO 13.5N95.5W...
INCLUDING THE GULF OF TEHUANTEPEC...N TO NE WINDS 30 TO 35 KT.
SEAS 9 TO 14 FT. ELSEWHERE WITHIN 45 NM EITHER SIDE OF A LINE
FROM 16N95W TO 12N96W N TO NE WINDS 20 TO 30 KT. SEAS 8 TO 11 FT.
REMAINDER OF AREA BOUNDED BY 09N94W TO 08N100W TO 12N100W TO
16N95W TO 12N93W TO 09N94W WINDS 20 KT OR LESS. SEAS 8 TO 11 FT
IN MIXED NE AND SOUTHERLY SWELL.
.24 HOUR FORECAST WITHIN AREA BOUNDED BY 13N95W TO 11N96W TO
12N99W TO 13N97W TO 16N95W TO 13N95W...INCLUDING THE GULF OF
TEHUANTEPEC...N TO NE WINDS 20 TO 30 KT. SEAS 8 TO 11 FT.
.48 HOUR FORECAST WITHIN AREA BOUNDED BY 14N94W TO 13N96W TO 
14N96W TO 16N95W TO 15N94W TO 14N94W...INCLUDING THE GULF OF 
TEHUANTEPEC...N TO NE WINDS 20 TO 25 KT. SEAS 8 TO 9 FT.

.SYNOPSIS AND FORECAST.

.WITHIN AREA BOUNDED BY 05N127W TO 00N135W TO 04N140W TO 09N133W
TO 16N136W TO 14N122W TO 05N127W WINDS 20 KT OR LESS. SEAS 8 TO 9
FT IN MIXED N AND SE SWELL.
.24 HOUR FORECAST WITHIN AREA BOUNDED BY 03.4S95W TO 01S115W TO 
00N120W TO 05N140W TO 00N140W TO 03.4S120W TO 03.4SN95W WINDS 20 
KT OR LESS. SEAS 8 TO 9 FT IN MIXED S AND NW SWELL.
.48 HOUR FORECAST WITHIN AREA BOUNDED BY 03.4S82W TO 02S94W TO
02N110W TO 06N140W TO 00N140W TO 03.4S120W TO 03.4S82W WINDS 20
KT OR LESS. SEAS 8 TO 9 FT IN MIXED SE AND SW SWELL...EXCEPT
MIXED NE AND SE SWELL W OF 125W.

.30 HOUR FORECAST WEAKENING COLD FRONT NW OF AREA APPROACHING
30N140W. WITHIN AREA BOUNDED BY 29N140W TO 30N140W TO 30N137W TO
29N140W WINDS 20 KT OR LESS. SEAS 8 TO 11 FT IN NW SWELL.
.48 HOUR FORECAST COLD FRONT DISSIPATED. N OF 28N WITHIN 90 NM W
OF COAST OF BAJA CALIFORNIA NW WINDS 20 TO 25 KT. SEAS TO 8 FT. 
WITHIN AREA BOUNDED BY 26N126W TO 19N140W TO 30N140W TO 30N116W 
TO 26N126W WINDS 20 KT OR LESS. SEAS 8 TO 16 FT IN NW SWELL...
HIGHEST NEAR 30N135W.

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

CONVECTION VALID AT 2100 UTC WED OCT 18...

.TROPICAL WAVE N OF 05N ALONG 84W...SCATTERED TO NUMEROUS
MODERATE ISOLATED STRONG FROM 05N TO 09N BETWEEN 78W AND 86W.

.INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...
MONSOON TROUGH AXIS EXTENDS FROM 10N76W TO 09N94W TO 08N102W TO
10N117W. ITCZ AXIS EXTENDS FROM 10N117W TO 07N134W TO 08N140W.
SCATTERED MODERATE ISOLATED STRONG FROM 10N TO 12N BETWEEN 90W
AND 93W. SCATTERED MODERATE WITHIN 30 NM EITHER SIDE OF AXIS
BETWEEN 94W AND 102W...FROM 07N TO 11N BETWEEN 114W AND 118W...
WITHIN 45 NM EITHER SIDE OF AXIS BETWEEN 124W AND 127W AND FROM
08N TO 10N BETWEEN 133W AND 136W.

$$
.FORECASTER LEWITSKY. NATIONAL HURRICANE CENTER.