FZPN40 PHFO 311516
HSFNP

HIGH SEAS FORECAST
NATIONAL WEATHER SERVICE HONOLULU HI
1700 UTC TUE MAR 31 2026

SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 180W

SYNOPSIS VALID 1200 UTC MAR 31 2026.
24 HOUR FORECAST VALID 1200 UTC APR 01 2026.
48 HOUR FORECAST VALID 1200 UTC APR 02 2026.

.WARNINGS.

.NONE.

.SYNOPSIS AND FORECAST.

.FRONT 20N140W 19N142W THENCE TROUGH 16N146W 10N151W NEARLY
STATIONARY.
.24 HOUR FORECAST FRONT WEAKENED TO TROUGH. NEW LOW NEAR 17N144W
1011 MB. TROUGH FROM 25N145W TO LOW TO 12N144W.
.48 HOUR FORECAST LOW NEAR 22N142W 1013 MB. TROUGH FROM 26N142W
TO LOW TO 18N145W TO 14N144W. WINDS 20 TO 25 KT FROM 26N TO 20N E
OF 144W.

.TROUGH 10N178W 07N180W MOVING W SLOWLY. ISOLATED MODERATE TO
STRONG TSTMS S OF 10N W OF 173W.
.24 HOUR FORECAST TROUGH MOVED W OF AREA.

.48 HOUR FORECAST NEW TROUGH 30N178W 28N180W.

.NE TO E WINDS 20 TO 25 KT N OF LINE 30N153W 20N175W 15N180W
12N180W 12N166W 30N145W.
.24 HOUR FORECAST WINDS EASED TO 20 KT OR LESS.

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

.SEAS 2.5 TO 4 M N OF LINE 30N141W 14N152W 09N180W.
.24 HOUR FORECAST SEAS 2.5 TO 3 M N OF LINE 30N162W 21N180W
08N180W 12N152W 28N144W 30N152W.
.48 HOUR FORECAST SEAS 2.5 TO 3 M W OF LINE 25N180W 22N165W
27N144W 15N158W 10N159W 04N180W.

.SEAS 2.5 M OR LOWER OVER REMAINDER OF FORECAST AREA.

.ITCZ 03N140W 03N158W. ISOLATED MODERATE TSTMS FROM 07N TO 02N E
OF 157W.

$$

.FORECASTER TROTTER. HONOLULU HI.