High Seas Forecast
Issued by NWS

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000
FZPN40 PHFO 232243
HSFNP

HIGH SEAS FORECAST
NATIONAL WEATHER SERVICE HONOLULU HI
2300 UTC TUE JAN 23 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 1800 UTC JAN 23 2018.
24 HOUR FORECAST VALID 1800 UTC JAN 24 2018.
48 HOUR FORECAST VALID 1800 UTC JAN 25 2018.

.WARNINGS.

...GALE WARNING...
.FRONT FROM 30N173W TO 22N180E TO 18N170E TO 15N160E MOVING E 20
KT N OF 20N...AND NEARLY STATIONARY ELSEWHERE. S TO SW WINDS 30
TO 40 KT WITHIN 300 NM E OF FRONT N OF 27N. S TO SW WINDS 20 TO
30 KT ELSEWHERE WITHIN 510 NM E OF FRONT N OF 25N. W TO NW WINDS
20 TO 25 KT WITHIN 480 NM W OF FRONT N OF 28N. SCATTERED MODERATE
TO LOCALLY STRONG TSTMS WITHIN 300 NM E OF FRONT N OF 19N.
.24 HOUR FORECAST FRONT FROM 30N167W TO 25N172W TO 20N175E TO
17N160E. WINDS 20 TO 30 KT WITHIN 420 NM E OF FRONT N OF 27N.
WINDS 20 TO 25 KT WITHIN 360 NW W OF FRONT N OF 28N.
.48 HOUR FORECAST FRONT FROM 30N161W TO 24N170W TO 21N180E. WINDS
20 TO 25 KT WITHIN 240 NM E OF FRONT N OF 28N.

.SYNOPSIS AND FORECAST.

.FRONT FROM 30N146W TO 27N153W TO 27N160W NEARLY STATIONARY.
.24 HOUR FORECAST WEAKENING FRONT FROM 29N140W TO 28N150W.
.48 HOUR FORECAST FRONT DISSIPATED.

.E WINDS 20 TO 25 KT FROM 10N TO 20N E OF 150W.
.24 HOUR FORECAST E WINDS 20 TO 25 KT FROM 10N TO 23N E OF
150W... AND FROM 10N TO 20N BETWEEN 150W AND 160W.
.48 HOUR FORECAST E WINDS 20 TO 25 KT FROM 10N TO 24N E OF 154W...
AND FROM 10N TO 18N BETWEEN 154W AND 162W.

.24 HOUR FORECAST NEW FRONT NEAR 30N160E.
.48 HOUR FORECAST FRONT FROM 30N167E TO 25N160E. S TO SW WINDS 20
TO 25 KT WITHIN 120 NM E OF FRONT N OF 28N.

.HIGH 28N162E MOVING NE 20 KT. RIDGE FROM 30N163E TO HIGH TO
27N160E MOVING ENE 20 KT.
.24 HOUR FORECAST HIGH DISSIPATED N OF AREA.

.RIDGE FROM 29N140W TO 29N146W NEARLY STATIONARY.

.RIDGE FROM 30N162W TO 23N170W TO 19N180E MOVING E 10 KT AND
GRADUALLY ERODING FROM THE W.

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

.SEAS 8 TO 12 FT E OF 170E. SEAS 8 TO 9 FT ELSEWHERE N OF 20N W OF
170E.
.24 HOUR FORECAST SEAS 12 TO 14 FT N OF 28N BETWEEN 170W AND
180E. SEAS 8 TO 12 FT ELSEWHERE N OF A LINE FROM 30N158W TO
22N180E TO 27N160E. SEAS 8 TO 11 FT S OF A LINE FROM 26N140W TO
26N160W TO 10N180E.
.48 HOUR FORECAST SEAS 12 TO 16 FT NW OF A LINE FROM 30N167E TO
25N160E. SEAS 8 TO 12 FT ELSEWHERE N OF A LINE FROM 30N160W TO
20N180E TO 22N160E. SEAS 8 TO 11 FT N OF 05N E OF 160W.

.OTHERWISE...SEAS 8 FT OR LOWER OVER REMAINDER OF FORECAST AREA.

.ITCZ FROM 07N140W TO 08N160W TO 06N165E. ISOLATED MODERATE TSTMS
WITHIN 240 NM OF ITCZ.

$$

.FORECASTER MORRISON. HONOLULU HI.


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