High Seas Forecast
Issued by NWS

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000
FZPN40 PHFO 170318
HSFNP

HIGH SEAS FORECAST
NATIONAL WEATHER SERVICE HONOLULU HI
0500 UTC TUE JAN 17 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 0000 UTC JAN 17 2017.
24 HOUR FORECAST VALID 0000 UTC JAN 18 2017.
48 HOUR FORECAST VALID 0000 UTC JAN 19 2017.

.WARNINGS.

...GALE WARNING...
.FRONT FROM 30N167W TO 19N160E. FRONT MOVING E 20 KT E OF
170E...NEARLY STATIONARY ELSEWHERE. WINDS 30 TO 35 KT WITHIN 360
NM E OF FRONT N OF 29N. WINDS 20 TO 30 KT ELSEWHERE N OF A LINE
FROM 30N150W TO 25N176E TO 28N170E. ISOLATED TSTMS WITHIN 90 NM E
OF FRONT E OF 177W.
.24 HOUR FORECAST FRONT FROM 30N155W TO 26N165W TO 26N170W. WINDS
20 TO 25 KT N OF 29N BETWEEN 144W AND 155W.
.48 HOUR FORECAST WEAKENING FRONT FROM 29N140W TO 28N146W. WINDS
DIMINISHED TO 20 KT OR LESS.

...GALE WARNING...
.12 HOUR FORECAST NEW FRONT FROM 30N164E TO 26N160E MOVING E 40
KT. W WINDS 30 TO 40 KT W OF FRONT. WINDS 20 TO 30 KT ELSEWHERE N
OF A LINE FROM 28N172E TO 25N166E TO 23N160E.
.24 HOUR FORECAST WEAKENING FRONT FROM 30N174E TO 24N166E.
DEVELOPING FRONT FROM 30N178E TO 22N171E TO 17N160E. WINDS 30 TO
40 KT BETWEEN 179W AND 163E. WINDS 20 TO 30 KT ELSEWHERE N OF A
LINE FROM 30N174W TO 24N179E TO 24N160E.
.48 HOUR FORECAST FRONTS MERGED INTO ONE FRONT FROM 30N168W TO
18N168E TO 15N160E. SW WINDS 20 TO 30 KT N OF A LINE FROM 30N156W
TO 28N168W. NE WINDS 20 TO 25 KT W OF 170E BETWEEN FRONT AND 21N.

.SYNOPSIS AND FORECAST.

.NE TO E WINDS 20 TO 25 KT FROM 07N TO 16N E OF 155W...AND FROM
06N TO 10N BETWEEN 170W AND 178W.
.24 HOUR FORECAST NE TO E WINDS 20 TO 25 KT FROM 08N TO 18N E OF
164W.
.48 HOUR FORECAST NE TO E WINDS 20 TO 25 KT FROM 07N TO 20N E OF
168W.

.TROUGH FROM 08N172E TO 05N172E TO 01N174E MOVING SW 15 KT.
ISOLATED MODERATE TSTMS S OF 08N W OF 177E.
.24 HOUR FORECAST TROUGH FROM 06N167E TO 00N171E.
.48 HOUR FORECAST TROUGH DISSIPATED.

.RIDGE FROM 28N140W 25N154W TO 20N178W TO 17N164E NEARLY
STATIONARY AND ERODING FROM THE W.

.OTHERWISE WINDS 20 KT OR LESS OVER REMAINDER OF AREA.

.SEAS 18 TO 24 FT N OF A LINE FROM 30N174W TO 24N174E TO 301N68E.
SEAS 12 TO 18 FT ELSEWHERE N OF A LINE FROM 30N156W TO 25N174W TO
18N169E TO 21N160E. SEAS 8 TO 12 FT ELSEWHERE N OF A LINE FROM
30N146W TO 12N160E. SEAS 8 TO 10 FT E OF A LINE FROM 20N154W TO
10N179W TO 05N175W.
.24 HOUR FORECAST SEAS 12 TO 21 FT N OF A LINE FROM 30N160W TO
15N179W TO 25N173E TO 23N160E. SEAS 8 TO 12 FT ELSEWHERE N OF A
LINE FROM 08N140W TO 06N175E TO 13N160E.
.48 HOUR FORECAST SEAS 12 TO 18 FT N OF A LINE FROM 30N147W TO
13N168W...AND N OF A LINE FROM 28N168W TO 22N169E. SEAS 8 TO 12 FT
ELSEWHERE N OF A LINE FROM 06N140W TO 06N165W TO 02N179W TO
11N160E TO 07N160E.

.OTHERWISE SEAS 8 FT OR LESS OVER REMAINDER OF AREA.

.ITCZ FROM 08N140W TO 08N145W TO 04N158W TO 04N167W TO 06N177W TO
06N177E. SCATTERED MODERATE TSTMS WITHIN 120 NM N OF ITCZ E OF
160W...AND WITHIN 180 NM S OF ITCZ W OF 170W.

$$

.FORECASTER BRAVENDER. HONOLULU HI.



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