High Seas Forecast
Issued by NWS

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000
FZPN40 PHFO 191521
HSFNP

HIGH SEAS FORECAST
NATIONAL WEATHER SERVICE HONOLULU HI
1700 UTC THU JAN 19 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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.

THIS HIGH SEAS FORECAST USES 1-MINUTE AVERAGE WINDS WHICH MAY BE
HIGHER THAN 10-MINUTE AVERAGE WINDS.

SECURITE

NORTH PACIFIC EQUATOR TO 30N BETWEEN 140W AND 160E

SYNOPSIS VALID 1200 UTC JAN 19 2017.
24 HOUR FORECAST VALID 1200 UTC JAN 20 2017.
48 HOUR FORECAST VALID 1200 UTC JAN 21 2017.

.WARNINGS.

...GALE WARNING...
.FRONT 30N166W 24N180W 19N172E 14N160E NEARLY STATIONARY. WINDS 20
TO 30 KT WITHIN 300 NM N OF FRONT W OF 180E. SEE SEAS BELOW.
.24 HOUR FORECAST FRONT 30N159W 22N180W 15N160E. WINDS 20 TO 35 KT
N OF FRONT W OF 168W. WINDS 20 TO 25 KT WITHIN 300 NM S OF FRONT.
.48 HOUR FORECAST DISSIPATING FRONT 30N143W 24N160W 20N170W. WINDS
20 TO 35 KT N OF FRONT AND N OF LINE 20N175W 19N160E. WINDS 20 TO
30 KT WITHIN 300 NM S OF FRONT.

...GALE WARNING...
.48 HOUR FORECAST FRONT 30N162E 28N160E. WINDS 30 TO 40 KT NW OF
LINE 30N173E 27N160E. WINDS 20 TO 30 KT ELSEWHERE N OF LINE 30N180E
25N175E 25N160E. SEE SEAS BELOW.

.SYNOPSIS AND FORECAST.

.TROUGH 17N172W 11N176W MOVING W 10 KT. ISOLATED MODERATE TSTMS
WITHIN 60 NM W AND 180 NM E OF TROUGH.
.24 HOUR FORECAST TROUGH DISSIPATED.

.NE TO E WINDS 20 TO 25 KT FROM 07N TO 21N E OF 170W...AND FROM
02N TO 15N W OF 176E.
.24 HOUR FORECAST NE TO E WINDS 20 TO 25 KT FROM 05N TO 18N.
.48 HOUR FORECAST NE TO E WINDS 20 TO 30 KT FROM 03N TO 20N.

.HIGH 26N144W 1024 MB MOVING W 10 KT. RIDGES FROM HIGH TO 26N140W
AND FROM HIGH TO 26N160W 25N171W.
.24 HOUR FORECAST HIGH 25N145W 1025 MB. RIDGES FROM HIGH TO
26N140W AND FROM HIGH TO 24N162W.
.48 HOUR FORECAST HIGH DISSIPATED. RIDGE 23N140W 25N145W.

.HIGH 30N165E 1026 MB MOVING NE 15 KT. RIDGE FROM HIGH TO 25N177E.
.24 HOUR FORECAST HIGH AND RIDGE MOVED NE OF FORECAST AREA.

.24 HOUR FORECAST FRONT NEAR 30N145W.
.48 HOUR FORECAST FRONT 27N140W 30N143W.

.REMAINDER OF AREA WINDS 20 KT OR LESS.

.SEAS 12 TO 16 FT N OF LINE 30N145W 14N158W 10N167W 29N169W
20N171E 30N168E. SEAS 8 TO 12 FT ELSEWHERE N OF LINE 05N140W
01N179W 05N160E.
.24 HOUR FORECAST SEAS 12 TO 14 FT N OF LINE 22N140W 20N145W
29N147W 27N163W 30N165W...FROM 07N TO 12N BETWEEN 153W AND
167W...AND WITHIN 120 NM OF LINE 23N179E 17N162E. SEAS 8 TO
12 FT ELSEWHERE N OF LINE 08N140W 01N165W 08N173E 03N160E.
.48 HOUR FORECAST SEAS 12 TO 15 FT N OF LINE 25N140W 28N153W
15N175W 16N168E...AND FROM 08N TO 13N BETWEEN 166W AND 173W.
SEAS 8 TO 12 FT ELSEWHERE N OF LINE 05N140W 00N151W 03N162W
03N180W 04N160E.

.REMAINDER OF AREA SEAS 8 FT OR LESS.

.ISOLATED MODERATE TSTMS S OF 08N W OF 173E.

.ITCZ 05N140W 04N156W 07N166W 05N179W. ISOLATED MODERATE TSTMS
WITHIN 120 NM OF ITCZ W OF 158W.

$$

.FORECASTER POWELL. HONOLULU HI.



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