880
FZPN40 PHFO 222235
HSFNP

HIGH SEAS FORECAST
NATIONAL WEATHER SERVICE HONOLULU HI
2300 UTC FRI AUG 22 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 1800 UTC AUG 22 2025.
24 HOUR FORECAST VALID 1800 UTC AUG 23 2025.
48 HOUR FORECAST VALID 1800 UTC AUG 24 2025.

.WARNINGS.

.NONE.

.SYNOPSIS AND FORECAST.

.TROUGH 30N174E 27N174E 24N172E MOVING NW SLOWLY. SCATTERED
MODERATE TSTMS WITHIN 330 NM E OF TROUGH.
.24 HOUR FORECAST TROUGH 30N169E 23N165E.
.48 HOUR FORECAST TROUGH MOVED N OF AREA.

.TROUGH 29N175W 27N176W 25N177W MOVING NW SLOWLY. ISOLATED
MODERATE TSTMS WITHIN 150 NM E OF TROUGH.
.24 HOUR FORECAST TROUGH DISSIPATED.

.24 HOUR FORECAST NEW TROUGH 26N170E 24N164E.
.48 HOUR FORECAST TROUGH 27N167E 25N162E.

.24 HOUR FORECAST NEW TROUGH 14N159W 08N161W.
.48 HOUR FORECAST TROUGH 14N164W 08N165W.

.WINDS 20 TO 25 KT FROM 12N TO 18N E OF 155W...AND FROM 10N TO
16N BETWEEN 175W AND 164E.
.24 HOUR FORECAST WINDS 20 TO 25 KT FROM 12N TO 18N E OF
162W...AND FROM 11N TO 16N BETWEEN 175W AND 164E.
.48 HOUR FORECAST WINDS 20 TO 25 KT FROM 11N TO 17N BETWEEN 144W
AND 164W...AND S OF 04N BETWEEN 149W AND 171W

.SEAS 2.5 TO 3.0 M FROM 11N TO 18N E OF 155W...AND FROM 10N TO
16N BETWEEN 169W AND 175W.
.24 HOUR FORECAST SEAS 2.5 TO 3.0 M FROM 12N TO 18N E OF
164W...AND FROM 12N TO 16N BETWEEN 180E AND 171E.
.48 HOUR FORECAST SEAS 2.5 TO 3.0 M FROM 12N TO 19N E OF 160W.

.WINDS 20 KT OR LESS AND SEAS 2.5 M OR LOWER OVER REMAINDER OF
FORECAST AREA.

.MONSOON TROUGH 12N140W 12N148W THENCE ITCZ 06N161W 08N172W
05N176E 07N169E 06N161E. ISOLATED MODERATE TO STRONG TSTMS
WITHIN 180 NM OF ITCZ BETWEEN 175W AND 175E. ISOLATED MODERATE
TSTMS ELSEWHERE WITHIN 210 NM OF ITCZ AND MONSOON TROUGH.

.WIDELY SCATTERED MODERATE TSTMS N OF 21N W OF 167E.

$$

.FORECASTER AHUE. HONOLULU HI.