270
FZPN40 PHFO 161545
HSFNP

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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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

.WARNINGS.


.NONE.

.SYNOPSIS AND FORECAST.

.FRONT 30N179W 28N177E 25N171E NEARLY STATIONARY.
.24 HOUR FORECAST FRONT WEAKENED TO TROUGH 30N175E 24N170E.
.48 HOUR FORECAST TROUGH 30N165E 22N162E.

.TROUGH 22N178E 19N177E 15N177E MOVING W 10 KT.
.24 HOUR FORECAST TROUGH MERGES WITH TROUGH DESCRIBED IMMEDIATELY
ABOVE.

.TROUGH 28N172W 23N172W MOVING W SLOWLY.
.24 HOUR FORECAST TROUGH DISSIPATED.

.WINDS 20 KT OR LESS OVER ENTIRE FORECAST AREA.

.SEAS 2.5 TO 3.0 M S OF 19N E OF 178E...AND N OF 27N E OF 150W.
.24 HOUR FORECAST SEAS 2.5 TO 3.0 M FROM 19N TO 07N BETWEEN 175E
AND 145W...AND N OF 25N E OF 152W.
.48 HOUR FORECAST SEAS 2.5 TO 3.0M FROM 18N TO 06N BETWEEN 172E
AND 155W...AND N OF 25N BETWEEN 145W AND 155W...AND N OF 26N W OF
164E.

.SEAS 2.5 M OR LOWER REMAINDER OF FORECAST AREA.

.ITCZ 09N140W 09N154W 07N167W 07N175E. ISOLATED MODERATE TSTMS
WITHIN 180 NM OF ITCZ.

$$

.FORECASTER M BALLARD. HONOLULU HI.