594
FZPN40 PHFO 072301 CCA
HSFNP

HIGH SEAS FORECAST
NATIONAL WEATHER SERVICE HONOLULU HI
2300 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 1800 UTC OCT 07 2025.
24 HOUR FORECAST VALID 1800 UTC OCT 08 2025.
48 HOUR FORECAST VALID 1800 UTC OCT 09 2025.

.WARNINGS.

.NONE.

.SYNOPSIS AND FORECAST.

.TROUGH 28N149W 23N156W 16N163W MOVING W 10 KT.
.24 HOUR FORECAST TROUGH 30N155W 22N159W 17N167W.
.48 HOUR FORECAST TROUGH 30N157W 25N159W 21N164W.

.TROUGH 25N140W 22N141W MOVING W 10 KT.
.24 HOUR FORECAST TROUGH MERGED WITH TROUGH DESCRIBED ABOVE.

.TROUGH 21N160E 17N161E 12N160E MOVING W 10 KT. SCATTERED
MODERATE TSTMS FROM 21N TO 12N W OF 166E.
.24 HOUR FORECAST TROUGH MOVED W OF AREA.

.TROUGH 10N160W 07N166W 04N173W MOVING NW SLOWLY. ISOLATED
MODERATE TSTMS WITHIN 150 NM OF TROUGH. WINDS 20 TO 25 KT WITHIN
120 NM S OF TROUGH.
.24 HOUR FORECAST TROUGH 15N155W 10N163W 07N171W.
.48 HOUR FORECAST TROUGH 16N158W 09N164W 07N176W.

.TROUGH 18N152W 15N156W MOVING W 10 KT.
.24 HOUR FORECAST TROUGH MERGED WITH TROUGH DESCRIBED IMMEDIATELY
ABOVE.

.LOW NEAR 11N154W 1009 MB MOVING W 10 KT. ISOLATED MODERATE TSTMS
WITHIN 120 NM OF LOW.
.24 HOUR FORECAST LOW NEAR 11N160W 1011 MB.
.48 HOUR FORECAST LOW NEAR 12N160W 1011 MB.

.LOW NEAR 09N147W 1012 MB MOVING N SLOWLY. ISOLATED MODERATE
TSTMS WITHIN 120 NM OF LOW.
.24 HOUR FORECAST LOW NEAR 10N147W 1013 MB.
.48 HOUR FORECAST LOW NEAR 11N147W 1012 MB.

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

.48 HOUR FORECAST SEAS 2.5 TO 3 M N OF 28N BETWEEN 170E AND 178W.

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

.ITCZ 10N140W 09N149W 11N155W...AND 08N175W 05N169E 05N160E. ISOLATED
MODERATE TSTMS WITHIN 180 NM OF ITCZ.

.ISOLATED MODERATE TSTMS FROM 26N TO 23N BETWEEN 177E AND 179E...
AND FROM 23N TO 19N BETWEEN 174E AND 174W.

$$

.FORECASTER TROTTER. HONOLULU HI.