FZPN40 PHFO 282230
HSFNP

HIGH SEAS FORECAST
NATIONAL WEATHER SERVICE HONOLULU HI
2300 UTC THU MAY 28 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 1800 UTC MAY 28 2026.
24 HOUR FORECAST VALID 1800 UTC MAY 29 2026.
48 HOUR FORECAST VALID 1800 UTC MAY 30 2026.

.WARNINGS.

.NONE.

.SYNOPSIS AND FORECAST.

.TROUGH 12N140W 04N144W MOVING NW SLOWLY. ISOLATED MODERATE
TSTMS WITHIN 60 NM OF TROUGH.
.24 HOUR FORECAST TROUGH 10N143W 08N145W.
.48 HOUR FORECAST TROUGH DISSIPATED.

.TROUGH 07N166W 06N174W 06N180W NEARLY STATIONARY. ISOLATED
STRONG TSTMS WITHIN 180 NM OF TROUGH.
.24 HOUR FORECAST NEW LOW 07N174W 1009 MB. TROUGH 06N165W 08N170W
TO LOW TO 05N180W.
.48 HOUR FORECAST LOW 06N179W 1009 MB. TROUGH 10N168W TO LOW TO
05N180W.

.WINDS 20 TO 25 KT N OF 21N W OF 160W.
.24 HOUR FORECAST WINDS EASED TO 20 KT OR LESS.
.48 HOUR FORECAST WINDS 20 KT OR LESS.

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

.SEAS 2.5 TO 3 M N OF 18N W OF 160W...AND N OF 24N E OF 150W.
.24 HOUR FORECAST SEAS 2.5 TO 3 M N OF 21N W OF 165W...AND FROM
13N TO 21N E OF 150W.
.48 HOUR FORECAST SEAS 2.5 TO 3 M FROM 14N TO 20N E OF 150W.

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

.ITCZ 04N146W 05N162W. SCATTERED MODERATE TO LOCALLY STRONG TSTMS
WITHIN 180 NM OF ITCZ.


$$

.FORECASTER ALMANZA. HONOLULU HI.