High Seas Forecast
Issued by NWS

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004
FZPN40 PHFO 180323
HSFNP

HIGH SEAS FORECAST
NATIONAL WEATHER SERVICE HONOLULU HI
0500 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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.

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 18 2017.
24 HOUR FORECAST VALID 0000 UTC JAN 19 2017.
48 HOUR FORECAST VALID 0000 UTC JAN 20 2017.

.WARNINGS.

...GALE WARNING...
.FRONT FROM 30N173E TO 26N169E TO 21N160E MOVING E 40 KT.
DEVELOPING FRONT FROM 30N177E TO 26N174E TO 19N160E MOVING E 30
KT. W WINDS 30 TO 40 KT N OF 27N BETWEEN FIRST FRONT AND 163E.
WINDS 20 TO 30 KT ELSEWHERE N OF A LINE FROM 29N176W TO 23N177E TO
23N160E.
.24 HOUR FORECAST FRONTS MERGED INTO ONE FROM 30N170W TO 21N174E
TO 15N160E. WINDS 20 TO 30 KT N OF 29N BETWEEN 160W AND 176E. NE
WINDS 20 TO 25 KT BETWEEN FRONT AND 22N W OF 170E.
.48 HOUR FORECAST FRONT FROM 30N163W TO 15N160E. NE TO E WINDS 20
TO 30 KT BETWEEN FRONT AND 26N W OF 176W.

.SYNOPSIS AND FORECAST.

.FRONT FROM 30N155W TO 25N171W MOVING E 30 KT. SW WINDS 20 TO 25
KT N OF 29N BETWEEN 143W AND 153W.
.24 HOUR FORECAST WEAKENING FRONT FROM 28N140W TO 27N147W. WINDS
DIMINISHED TO 20 KT OR LESS.
.48 HOUR FORECAST FRONT MOVED E OF AREA.

.NE TO E WINDS 20 TO 25 KT FROM 08N TO 16N E OF 160W.
.24 HOUR FORECAST NE TO E WINDS 20 TO 30 KT FROM 06N TO 20N E OF
167W...AND FROM 04N TO 12N W OF 165E.
.48 HOUR FORECAST NE TO E WINDS 20 TO 25 KT FROM 06N TO 16N E OF
170W...AND ELSEWHERE FROM 06N TO 20N W OF 177E.

.RIDGE FROM 27N140W TO 24N163W TO 18N169E NEARLY STATIONARY AND
GRADUALLY ERODING FROM THE W.

.OTHERWISE WINDS 20 KT OR LESS OVER REST OF FORECAST AREA.

.SEAS 12 TO 21 FEET N OF A LINE FROM 30N160W TO 18N174W TO
15N179E TO 26N174E TO 23N160E. SEAS 8 TO 12 FEET ELSEWHERE N OF A
LINE FROM 07N140W TO 06N173E TO 14N160E.
.24 HOUR FORECAST SEAS 12 TO 18 FT N OF A LINE FROM 30N148W TO
14N163W TO 13N169W...AND N OF A LINE FROM 28N169W TO 28N175W TO
20N168E. SEAS 8 TO 12 FT ELSEWHERE N OF A LINE FROM 06N140W TO
06N165W TO 02N178E TO 14N167E TO 07N160E.
.48 HOUR FORECAST SEAS 12 TO 16 FT N OF A LINE FROM 25N140W TO
18N150W.. SEAS 12 TO 14 FT N OF A LINE FROM 30N158W TO 26N169W TO
30N174W AND FROM 07N TO 16N BETWEEN 154W AND 163W. SEAS 8 TO 12 FT
ELSEWHERE N OF A LINE FROM 05N140W TO 02N155W TO 06N170E TO
04N160E.

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

.SCATTERED MODERATE TSTMS S OF 05S BETWEEN 176W AND 177E. ISOLATED
MODERATE TSTMS S OF 04N BETWEEN 160E AND 177E.

.ITCZ FROM 04N140W TO 06N162W TO 02N170W. ISOLATED TSTMS WITHIN
90 NM OF ITCZ W OF 163W...AND FROM 07N TO 09N E OF 163W.

$$

.FORECASTER BRAVENDER. HONOLULU HI.



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