935
FZPN40 PHFO 161518
HSFNP

HIGH SEAS FORECAST
NATIONAL WEATHER SERVICE HONOLULU HI
1700 UTC SAT AUG 16 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 16 2025.
24 HOUR FORECAST VALID 1200 UTC AUG 17 2025.
48 HOUR FORECAST VALID 1200 UTC AUG 18 2025.

.WARNINGS.

.NONE.

.SYNOPSIS AND FORECAST.

.TROUGH 30N178E 26N176E NEARLY STATIONARY.
.24 HOUR FORECAST LITTLE CHANGE.
.48 HOUR FORECAST WEAK TROUGH 30N176E 27N175E.

.TROUGH 26N167E 22N164E MOVING NW 10 KT. ISOLATED MODERATE TSTMS
WITHIN 240 NM OF TROUGH.
.24 HOUR FORECAST TROUGH 27N165E 23N161E.
.48 HOUR FORECAST TROUGH 29N163E 24N160E.

.TROUGH 11N168E 06N165E MOVING W 15 KT. SCATTERED MODERATE TSTMS
WITHIN 210 NM OF TROUGH.
.24 HOUR FORECAST TROUGH MOVED W OF AREA.

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

.SEAS 2.5 M OR LOWER REMAINDER OF FORECAST AREA.

.ITCZ 09N140W 08N178W 04N164E 05N160E. NUMEROUS MODERATE TSTMS
WITHIN 240 NM N OF ITCZ BETWEEN 170W AND 172E. ELSEWHERE ISOLATE
MODERATE TSTMS WITHIN 270 NM OF ITCZ.

.ISOLATED MODERATE TSTMS WITHIN 60 NM OF A POINT 26N165W.

$$

.FORECASTER ALMANZA. HONOLULU HI.