High Seas Forecast
Issued by NWS

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000
FZPN40 PHFO 171533
HSFNP

HIGH SEAS FORECAST
NATIONAL WEATHER SERVICE HONOLULU HI
1700 UTC WED JAN 17 2018

SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 17 2018.
24 HOUR FORECAST VALID 1200 UTC JAN 18 2018.
48 HOUR FORECAST VALID 1200 UTC JAN 19 2018.

.WARNINGS.

...STORM WARNING...
.LOW 28N176E 1014 MB MOVING ENE 20 KT. WARM FRONT FROM LOW TO
29N180E TO 28N177W TO 26N175W TO 24N171W MOVING NE 15 KT. COLD FRONT
FROM LOW TO 22N171E TO 20N165E TO 19N161E MOVING E 15 KT. WINDS 30
TO 45 KT WITHIN 120 NM N AND WITHIN 60 NM S OF LOW...COLD AND WARM
FRONTS BETWEEN 174E AND 180E. WINDS 20 TO 30 KT ELSEWHERE N OF 23N
BETWEEN 173E TO 172W. NE WINDS 20 TO 30 KT FROM 24N TO 29N BETWEEN
173E AND 169E...AND FROM 20N TO 28N W OF 169E. NUMEROUS MODERATE
TSTMS WITHIN 90 NM SE OF COLD FRONT E OF 171E. ISOLATED MODERATE
TSTMS ELSEWHERE N OF 25N BETWEEN 174E AND 177W.
.06 HOUR FORECAST LOW 28N178E 1011 MB. WARM FRONT FROM LOW TO
29N178W TO 29N175W. COLD FRONT FROM LOW TO 23N174E TO 20N169E. WINDS
40 TO 50 KT WITHIN 60 NM N SEMICIRCLE OF LOW. WINDS 30 TO 40 KT
ELSEWHERE N OF 26N BETWEEN 172W AND 175E. WINDS 20 TO 30 KT
ELSEWHERE N OF 23N BETWEEN 169W AND 173E. NE WINDS 20 TO 30 KT FROM
24N TO 28N BETWEEN 173E AND 167E...AND W OF 167E BETWEEN 20N AND 26N.
.24 HOUR FORECAST LOW 30N176W 1008 MB. WARM FRONT N OF AREA. COLD
FRONT FROM LOW TO 22N178E TO 18N173E. WINDS 30 TO 45 KT OVER
FORECAST WATERS N OF 26N BETWEEN 167W AND 176W...AND N OF 29N
BETWEEN 176W AND 179W. WINDS 20 TO 30 KT ELSEWHERE N OF 24N BETWEEN
142W AND 179W...AND N OF 27N BETWEEN 179W AND 178E.
.48 HOUR FORECAST LOW N OF AREA. COLD FRONT FROM 30N170W TO 27N172W
TO 21N171E. WINDS 30 TO 40 KT OVER FORECAST WATERS N OF 28N BETWEEN
161W AND 169W. WINDS 20 TO 30 KT ELSEWHERE N OF 26N E OF 170W.

.SYNOPSIS AND FORECAST.

.COLD FRONT FROM 30N144W TO 25N156W TO 23N163W TO 23N170W MOVING SE
10 KT E OF 156W AND NEARLY STATIONARY ELSEWHERE AND WEAKENING.
.24 HOUR FORECAST WEAKENING FRONT FROM 26N140W TO 21N150W.
.48 HOUR FORECAST FRONT DISSIPATED.

.RIDGE FROM 27N140W TO 26N146W MOVING N SLOWLY AND WEAKENING FROM
THE W.

.E TO NE WINDS 20 TO 30 KT FROM 11N TO 14N BETWEEN 144W AND
152W...FROM 07N TO 26N BETWEEN 152W AND 172W...FROM 06N TO 23N
BETWEEN 172W AND 177W...AND FROM 07N TO 15N BETWEEN 177W AND 164E.
.24 HOUR FORECAST WINDS 20 TO 30 KT E OF LINE FROM 08N177E TO
20N168W TO 24N171W.
.48 HOUR FORECAST WINDS 20 TO 30 KT E OF 177E BETWEEN 07N AND
14N...AND E OF LINE FROM 14N170W TO 19N165W TO 20N158W TO 26N165W.

.WINDS 20 KT OR LESS REMAINDER FORECAST AREA.

.SEAS 12 TO 18 FT N OF A LINE FROM 30N144W TO 23N160W TO 24N166W.
SEAS 12 TO 15 FT WITHIN 60 NM OF LINE FROM 23N164E TO 23N169E TO
29N178E. SEAS 8 FT OR LESS N OF 29N BETWEEN 161E AND 170E...FROM
18N TO 22N BETWEEN 153W AND 159W...AND S OF LINE FROM 01N155W TO
06N162W TO 03N168W TO 03N177W TO 14N160E. SEAS 8 TO 13 FT REST OF
AREA.
.24 HOUR FORECAST SEAS 12 TO 17 FT N OF 27N BETWEEN 169W AND 178E.
SEAS 12 TO 14 FT N OF 23N E OF 150W. SEAS 8 FT OR LOWER N OF LINE
FROM 30N170E TO 26N164E TO 25N160E...AND S OF LINE FROM 09N140W TO
02N180W TO 02N175E TO 12N166E TO 08N160E.
.48 HOUR FORECAST SEAS 12 TO 15 FT N OF LINE FROM 30N164E TO
28N160E. SEAS 8 TO 12 FT ELSEWHERE N OF LINE FROM 30N166E TO
27N160E. SEAS 8 TO 14 FT N OF LINE FROM 08N140W TO 08N151W
TO 03N155W TO 06N161W TO 05N170W. SEAS 8 TO 12 FT BETWEEN 170W AND
174E...EXCEPT SEAS 8 FT OR LESS FROM 19N TO 24N BETWEEN 171W AND
179W. SEAS 8 TO 9 FT FROM 09N TO 28N BETWEEN 168E AND 174E.

.SEAS 8 FT OR LESS REST OF AREA.

.ITCZ FROM 09N140W TO 06N170W TO 06N171E. ISOLATED MODERATE TO
STRONG TSTMS FROM 04N TO 11N.

$$

.HONOLULU HI.


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