High Seas Forecast
Issued by NWS

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FZPN40 PHFO 181040
HSFNP

HIGH SEAS FORECAST
NATIONAL WEATHER SERVICE HONOLULU HI
1100 UTC THU APR 18 2024

SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 0600 UTC APR 18 2024.
24 HOUR FORECAST VALID 0600 UTC APR 19 2024.
48 HOUR FORECAST VALID 0600 UTC APR 20 2024.

.WARNINGS.

.NONE.

.SYNOPSIS AND FORECAST.

.FRONT FROM 28N140W TO 23N143W TO 22N146W TO 19N150W...THENCE
TROUGH TO 13N163W MOVING E SLOWLY N OF 19N...AND NEARLY
STATIONARY ELSEWHERE.
.24 HOUR FORECAST FRONT FROM 26N140W TO 23N145W...THENCE
TROUGH TO 20N145W.
.48 HOUR FORECAST FRONT FROM 26N139W TO 22N150W. TROUGH
DISSIPATED.

.FRONT FROM 30N169E TO 26N167E TO 24N164E TO 20N160E MOVING E
SLOWLY N OF 23N...AND NEARLY STATIONARY ELSEWHERE. SE TO S
WINDS 20 TO 25 KT N OF 26N BETWEEN FRONT AND 180W.
.24 HOUR FORECAST FRONT MOVED N OF AREA. TROUGH FROM 30N170E
TO 25N165E.
.48 HOUR FORECAST TROUGH MOVED N OF AREA.

.24 HOUR FORECAST NEW FRONT FROM 30N161E TO 28N160E.
.48 HOUR FORECAST FRONT FROM 30N168E TO 24N160E.

.WINDS 20 TO 25 KT N OF 05N AND S OF A LINE FROM 20N175E TO
25N170W TO 15N140W.
.24 HOUR FORECAST WINDS 20 TO 25 KT FROM 05N TO 25N BETWEEN
170E AND 140W.
.48 HOUR FORECAST WINDS 20 TO 25 KT FROM 05N TO 20N ACROSS
ENTIRE FORECAST AREA.

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

.SEAS 8 TO 10 FT FROM 05N TO 15N BETWEEN 175E AND 165W.
.24 HOUR FORECAST SEAS 8 TO 10 FT FROM 05N TO 13N BETWEEN
175E AND 170W.
.48 HOUR FORECAST SEAS SUBSIDING TO 8 FT OR LOWER.

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

.ITCZ FROM 08N168W TO 02N149W TO 06N140W...AND FROM 03N160E
TO 00N168E. ISOLATED MODERATE TSTMS WITHIN 120 NM OF ITCZ.

.ISOLATED MODERATE TSTMS WITHIN 150 NM OF POINT 07N170W.


$$

.FORECASTER PECHACEK. HONOLULU HI.
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