High Seas Forecast
Issued by NWS

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000
FZPN03 KNHC 180221
HSFEP2

HIGH SEAS FORECAST
NWS NATIONAL HURRICANE CENTER MIAMI FL
0430 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 0000 UTC WED OCT 18.
24 HOUR FORECAST VALID 0000 UTC THU OCT 19.
48 HOUR FORECAST VALID 0000 UTC FRI OCT 20.

.WARNINGS.

...GALE WARNING...
.WITHIN 45 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
A LINE FROM 16N95W TO 15N95W TO 12N96W N TO NE WINDS 20 TO 30
KT. SEAS 8 TO 13 FT. REMAINDER OF AREA BOUNDED BY 10N94W TO
09N97W TO 10N101W TO 12N100W TO 16N95W TO 12N93W TO 10N94W WINDS
20 KT OR LESS. SEAS 8 TO 10 FT IN MIXED NE AND SOUTHERLY SWELL.
.24 HOUR FORECAST WITHIN 30 NM EITHER SIDE OF A LINE FROM 16N95W
TO 14.5N95.5W...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 A LINE FROM 16N95W TO 13.5N95.5W N TO NE WINDS 20
TO 30 KT. SEAS 8 TO 11 FT. REMAINDER OF AREA BOUNDED BY 11N94W
TO 08N96W TO 09N100W TO 15N96W TO 16N94W TO 11N94W WINDS 20 KT OR
LESS. SEAS 8 TO 10 FT IN MIXED NE AND SOUTHERLY SWELL.
.42 HOUR FORECAST WITHIN 45 NM EITHER SIDE OF A 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 60 NM EITHER
SIDE OF A LINE FROM 16N95W TO 12N96W WINDS 20 KT OR LESS. SEAS 8
TO 9 FT IN MIXED NE AND SOUTHERLY SWELL.
.48 HOUR FORECAST WITHIN 30 NM EITHER SIDE OF A LINE FROM 16N95W
TO 14N95.5W...INCLUDING THE GULF OF TEHUANTEPEC...N TO NE WINDS
20 TO 25 KT. SEAS 8 TO 10 FT.

.SYNOPSIS AND FORECAST.

.LOW PRES NEAR 24N128W 1013 MB. WITHIN 150 NM N QUADRANT WINDS
20 KT OR LESS. SEAS TO 8 FT IN MIXED SW AND NW SWELL.
.06 HOUR FORECAST LOW PRES DISSIPATED. WINDS 20 KT OR LESS. SEAS
LESS THAN 8 FT.

.LOW PRES NEAR 16N140W 1009 MB. FROM 16N TO 19N W OF 138W WINDS
20 KT OR LESS. SEAS TO 8 FT IN MIXED NE AND NW SWELL.
.12 HOUR FORECAST LOW PRES W OF AREA. OVER FORECAST WATERS WINDS
20 KT OR LESS. SEAS LESS THAN 8 FT.

.WITHIN AREA BOUNDED BY 03.4S120W TO 05N122W TO 15N122W TO
13N112W TO 06N108W TO 03.4S120W WINDS 20 KT OR LESS. SEAS 8 TO 9
FT IN MIXED SE AND SW SWELL. S OF 04N W OF 130W WINDS 20 KT OR
LESS. SEAS 8 FT IN MIXED NE AND SE SWELL.
.24 HOUR FORECAST S OF 05N W OF 132W WINDS 20 KT OR LESS. SEAS TO
8 FT IN MIXED N AND SE SWELL.
.48 HOUR FORECAST WITHIN AREA BOUNDED BY 03.4S120W TO 00N140W TO
04N140W TO 03.4S100W TO 03.4S120W WINDS 20 KT OR LESS. SEAS 8 TO
9 FT IN MIXED SE AND SW SWELL.

.48 HOUR FORECAST W OF A LINE FROM 30N136W TO 28N140W WINDS 20 KT
OR LESS. SEAS 8 TO 11 FT IN NW SWELL.

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

CONVECTION VALID AT 0215 UTC WED OCT 18...

.LOW PRES NEAR 16N140W...SCATTERED MODERATE FROM 15N TO 17N
BETWEEN 137W AND 139W.

.INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...
MONSOON TROUGH AXIS EXTENDS FROM 10N74W TO 10N90W TO 11N114W TO
LOW PRES NEAR 10N118W TO 10N120W. ITCZ AXIS EXTENDS FROM 10N120W
TO 08N126W TO 11N140W. SCATTERED MODERATE ISOLATED STRONG FROM
07N TO 11N BETWEEN 92W AND 95W...FROM 07N TO 10N BETWEEN 105W AND
111W...AND WITHIN AREA BOUNDED BY 13N122W TO 13N118W TO 07N114W
TO 07N128W TO 13N122W.

$$
.FORECASTER LEWITSKY. NATIONAL HURRICANE CENTER.



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