FZPN40 PHFO 311020
HSFNP

HIGH SEAS FORECAST
NATIONAL WEATHER SERVICE HONOLULU HI
1100 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 0600 UTC MAR 31 2026.
24 HOUR FORECAST VALID 0600 UTC APR 01 2026.
48 HOUR FORECAST VALID 0600 UTC APR 02 2026.

.WARNINGS.

.NONE.

.SYNOPSIS AND FORECAST.

.TROUGH 21N140W 18N147W 11N153W NEARLY STATIONARY.
.24 HOUR FORECAST TROUGH 25N145W 14N145W.
.48 HOUR FORECAST NEW LOW NEAR 20N143W 1014 MB. TROUGH FROM
25N142W TO LOW TO 13N143W. WINDS 20 TO 25 KT FROM 27N TO 21N
BETWEEN 150W AND 140W.

.TROUGH 10N179W 08N180W MOVING W SLOWLY. ISOLATED MODERATE TSTMS
S OF 10N W OF 173W.
.24 HOUR FORECAST TROUGH MOVED W OF AREA.

.24 HOUR FORECAST NEW FRONT 30N179W 27N180W. WINDS 20 TO 25 KT N
OF 28N W OF 178W.
.48 HOUR FORECAST FRONT 30N175W 26N177W 25N180W. WINDS 20 TO 25
KT N OF 28N W OF 176W.

.NE TO E WINDS 20 TO 25 KT N OF LINE 30N157W 21N178W 10N180W
12N163W 30N145W.
.24 HOUR FORECAST NE TO E WINDS 20 TO 25 KT N OF LINE 30N151W
23N171W 17N168W 19N157W 30N142W.
.48 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 30N142W 15N151W 08N180W.
.24 HOUR FORECAST SEAS 2.5 TO 3 M N OF LINE 30N165W 25N179W
08N180E 08N164W 30N141W.
.48 HOUR FORECAST SEAS 2.5 TO 3 M W OF LINE 18N180W 25N156W
27N144W 11N152W 03N180W.

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

.ITCZ 04N140W 03N145W 03N160W. ISOLATED MODERATE TSTMS WITHIN 180
NM OF ITCZ.

$$

.FORECASTER TROTTER. HONOLULU HI.