598
FZPN40 PHFO 241511
HSFNP

HIGH SEAS FORECAST
NATIONAL WEATHER SERVICE HONOLULU HI
1700 UTC SUN AUG 24 2025

SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 1200 UTC AUG 24 2025.
24 HOUR FORECAST VALID 1200 UTC AUG 25 2025.
48 HOUR FORECAST VALID 1200 UTC AUG 26 2025.

.WARNINGS.

.NONE.

.SYNOPSIS AND FORECAST.

.TROUGH 26N171E 23N169E MOVING NW SLOWLY. ISOLATED MODERATE
TSTMS WITHIN 180 NM OF TROUGH.
.24 HOUR FORECAST TROUGH 29N171E 26N169E.
.48 HOUR FORECAST TROUGH MOVED N OF AREA.

.TROUGH 15N166W 11N166W MOVING W 10 KT. ISOLATED MODERATE TSTMS
WITHIN 240 NM OF TROUGH.
.24 HOUR FORECAST TROUGH 15N169W 12N169W.
.48 HOUR FORECAST TROUGH DISSIPATED.

.48 HOUR FORECAST NEW TROUGH 15N159W 12N160W.

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

.SEAS 2.5 TO 3.5 M FROM 17N TO 11N BETWEEN 144W AND 156W.
.24 HOUR FORECAST SEAS 2.5 TO 3.5 M FROM 15N TO 11N BETWEEN
152W AND 162W.
.48 HOUR FORECAST SEAS 2.5 TO 3.0 M FROM 15N TO 11N BETWEEN
158W AND 165W.

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

.MONSOON TROUGH 11N140W 11N144W. ISOLATED MODERATE TSTMS WITHIN
270 NM OF TROUGH.

.ITCZ 11N147W 13N150W 10N160W. ISOLATED MODERATE TSTMS WITHIN
240 NM OF ITCZ.

.ISOLATED MODERATE TSTMS S OF 11N W OF 177W.

$$

.FORECASTER THOMAS. HONOLULU HI.