High Seas Forecast
Issued by NWS

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841
FZPN03 KNHC 181520
HSFEP2

HIGH SEAS FORECAST
NWS NATIONAL HURRICANE CENTER MIAMI FL
ISSUED BY NATIONAL WEATHER SERVICE HONOLULU HI
1630 UTC WED JAN 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 JAN 18
24 HOUR FORECAST VALID 1200 UTC THU JAN 19
48 HOUR FORECAST VALID 1200 UTC FRI JAN 20

.WARNINGS.

.NONE.

.SYNOPSIS AND FORECAST.

.FROM 08N TO 15N W OF 133W AND FROM 10N TO 14N BETWEEN 122W AND 133W
NE WINDS 20 TO 25 KT. SEAS 9 TO 10 FT. ELSEWHERE FROM 07N TO 19N W
OF 133W...AND FROM 10N TO 15N BETWEEN 116W AND 133W WINDS 20 KT OR
LESS. SEAS 8 TO 10 FT IN MIXED NE AND NW SWELL.
.24 HOUR FORECAST FROM 08N TO 17N W OF 137W AND FROM 10N TO 15N
BETWEEN 126W AND 137W NE WINDS 20 TO 25 KT. SEAS 8 TO 10 FT.
ELSEWHERE FROM 06N TO 19N W OF 137W...FROM 08N TO 17N BETWEEN 126W
AND 137W...AND FROM 10N TO 15N BETWEEN 122W AND 126W WINDS 20 KT OR
LESS. SEAS 8 TO 9 FT IN MIXED NE AND NW SWELL.
.48 HOUR FORECAST FROM 08N TO 12N W OF 137W NE WINDS 20 TO 25 KT.
SEAS 8 TO 9 FT. ELSEWHERE W OF A LINE FROM 19N133W TO 12N137W WINDS
20 KT OR LESS. SEAS 8 TO 12 FT IN NW SWELL. FROM 09N TO 12N BETWEEN
133W AND 137W WINDS 20 KT OR LESS. SEAS 8 TO 9 FT IN MIXED NE AND NW
SWELL.

.N OF 28N W OF 135W WINDS 20 TO 25 KT. SEAS 8 TO 11 FT IN NW SWELL.
COLD FRONT MOVING INTO NW CORNER AROUND 18/1800 UTC.
.12 HOUR FORECAST COLD FRONT FROM 30N133W TO 29N136W TO 29N140W.
N OF 29N E OF 136W WITHIN 150 NM E OF FRONT SW TO W WINDS 20 TO 25
KT. SEAS 8 TO 11 FT IN NW SWELL. ELSEWHERE N OF A LINE FROM 30N125W
TO 27N135W TO 26N140W WINDS 20 KT OR LESS. SEAS 8 TO 11 FT IN NW
SWELL.
.24 HOUR FORECAST COLD FRONT FROM 30N124W TO 27N135W AND WEAKENING
FRONT TO 27N140W. N OF A LINE FROM 30N120W TO 29N126W TO 30N128W
WINDS 20 TO 30 KT. SEAS 8 TO 12 FT IN NW SWELL. ELSEWHERE N OF A
LINE FROM 30N120W TO 26N128W TO 25N140W WINDS 20 KT OR LESS.
SEAS 8 TO 13 FT.
.36 HOUR FORECAST COLD FRONT FROM 30N116W TO 27N123W AND DISSIPATING
FRONT TO 26N130W. N OF A LINE FROM 30N118W TO 26N125W TO 23N140W
WINDS 20 KT OR LESS. SEAS 8 TO 12 FT IN NW SWELL...EXCEPT 12 TO 16
FT N OF A LINE FROM 30N122W TO 28N125W TO 26N135W TO 24N140W.
.48 HOUR FORECAST COLD FRONT FROM 30N114W TO 28N116W AND DISSIPATING
FRONT TO 25N125W. N OF A LINE FROM 30N122W TO 28N125W TO 29N133W TO
30N137W WINDS 20 TO 30 KT. SEAS 8 TO 12 FT IN NW SWELL N OF A LINE
FROM 29N115W TO 25N120W TO 19N133W TO 19N140W...EXCEPT SEAS 12 TO 16
FT N OF A LINE FROM 30N118W TO 26N125W TO 22N140W.

.FROM 10N TO 12.5N E OF 90W...INCLUDING THE GULF OF PAPAGAYO...NE TO
E WINDS 20 TO 25 KT. SEAS LESS THAN 8 FT.
.12 HOUR FORECAST WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT.
.24 HOUR FORECAST WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT.

.30 HOUR FORECAST GULF OF CALIFORNIA N OF 29.5N W TO SW WINDS 20 TO
30 KT. SEAS LESS THAN 8 FT.
.48 HOUR FORECAST BETWEEN 28N AND 30.2N W TO SW WINDS 20 TO 25 KT.
SEAS LESS THAN 8 FT.

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

CONVECTION VALID AT 1515 UTC WED JAN 18...

.SURFACE TROUGH FROM 15N116W TO 12N119W TO 08N120W. SCATTERED
MODERATE WITHIN 180 TO 240 NM OF TROUGH.

.SCATTERED MODERATE WITHIN 30 NM OF 13N110W AND 12N113W.

.INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...
A TROUGH EXTENDS FROM 05N77W TO 02N79W TO 02N83W.  ITCZ AXIS EXTENDS
FROM 04N85W TO LOW PRES NEAR 05N95W 1010 MB TO 02N106W TO 03N110W TO
08N118W...AND RESUMES AT 08N122W TO 06N133W TO BEYOND 06N140W.
SCATTERED MODERATE ISOLATED STRONG WITHIN 180 TO 240 NM N OF AXIS
BETWEEN 115W AND 119W...AND WITHIN 200 NM N OF AXIS BETWEEN 122W AND
127W. SCATTERED MODERATE WITHIN 80 NM S OF AXIS BETWEEN 118W AND
125W.

$$
.FORECASTER LAU/HOUSTON. HONOLULU HAWAII



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