189
FZPN40 PHFO 070955
HSFNP

HIGH SEAS FORECAST
NATIONAL WEATHER SERVICE HONOLULU HI
1100 UTC TUE OCT 07 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 OCT 07 2025.
24 HOUR FORECAST VALID 0600 UTC OCT 08 2025.
48 HOUR FORECAST VALID 0600 UTC OCT 09 2025.

.WARNINGS.

.NONE.

.SYNOPSIS AND FORECAST.

.TROUGH 27N149W 21N150W 16N147W MOVING W 10 KT. ISOLATED MODERATE
TSTMS FROM 24N TO 28N BETWEEN TROUGH AND 144W.
.24 HOUR FORECAST TROUGH MERGES WITH TROUGH DESCRIBED BELOW.

.TROUGH 23N153W 19N165W MOVING W SLOWLY.
.24 HOUR FORECAST TROUGH 28N155W 22N160W 17N162W.
.48 HOUR FORECAST TROUGH 30N155W 24N160W 18N167W.

.TROUGH 28N176E 24N177E MOVING W SLOWLY. ISOLATED MODERATE TSTMS
WITHIN 120 NM W OF TROUGH S OF 25N... AND WITHIN 180 NM E OF TROUGH
N OF 25N.
.24 HOUR FORECAST TROUGH DISSIPATED.

.LOW NEAR 10N154W 1009 MB MOVING W SLOWLY.
.24 HOUR FORECAST LOW NEAR 09N159W 1009 MB.
.48 HOUR FORECAST LOW DISSIPATED.

.WINDS 20 TO 25 KT N OF 24N BETWEEN 173W AND 157W.
.24 HOUR FORECAST WINDS EASED TO 20 KT OR LESS.

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

.SEAS 2.5 TO 3 M N OF 24N BETWEEN 173W AND 158W.
.24 HOUR FORECAST SEAS LOWERED TO 2.5 M OR LOWER.

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

.ITCZ 09N140W 10N150W 07N170W 08N170E 08N158E. ISOLATED MODERATE TSTMS
WITHIN 180 NM OF ITCZ E OF 170W.

.ISOLATED MODERATE TSTMS FROM 19N TO 22N BETWEEN 175W AND 169W...AND
FROM 19N TO 23N W OF 169E... AND FROM 15N TO 19N W OF 164E.

$$

.FORECASTER SHIGESATO. HONOLULU HI.