313
FZPN40 PHFO 241040
HSFNP

HIGH SEAS FORECAST
NATIONAL WEATHER SERVICE HONOLULU HI
1100 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 0600 UTC AUG 24 2025.
24 HOUR FORECAST VALID 0600 UTC AUG 25 2025.
48 HOUR FORECAST VALID 0600 UTC AUG 26 2025.

.WARNINGS.

.NONE.

.SYNOPSIS AND FORECAST.

.TROUGH 27N171E 22N166E MOVING NW SLOWLY. ISOLATED MODERATE
TSTMS WITHIN 180 NM OF TROUGH.
.24 HOUR FORECAST TROUGH DISSIPATED.

.TROUGH 14N165W 10N164W MOVING W 10 KT. ISOLATED MODERATE TSTMS
WITHIN 240 NM OF TROUGH.
.24 HOUR FORECAST TROUGH 14N170W 10N170W.
.48 HOUR FORECAST TROUGH 14N175W 10N175W.

.24 HOUR FORECAST NEW TROUGH 30N178E 25N178W.
.48 HOUR FORECAST TROUGH 30N178E 23N179E.

.24 HOUR FORECAST WINDS 20 TO 25 KT FROM 14N TO 12N BETWEEN
153W AND 157W.
.48 HOUR FORECAST WINDS 20 TO 25 KT FROM 15N TO 12N BETWEEN
156W AND 159W.

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

.SEAS 2.5 TO 3.5 M FROM 17N TO 11N BETWEEN 147W AND 156W.
.24 HOUR FORECAST SEAS 2.5 TO 3.5 M FROM 16N TO 11N BETWEEN
149W AND 160W.
.48 HOUR FORECAST SEAS 2.5 TO 3.0 M FROM 15N TO 11N BETWEEN
156W AND 163W.

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

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

.ITCZ 11N146W 12N151W 07N160W. ISOLATED MODERATE TSTMS WITHIN
240 NM OF ITCZ.

.ISOLATED MODERATE TSTMS FROM 18N TO 14N BETWEEN 174E AND 166E.

$$

.FORECASTER THOMAS. HONOLULU HI.