078
FZPN40 PHFO 061519
HSFNP

HIGH SEAS FORECAST
NATIONAL WEATHER SERVICE HONOLULU HI
1700 UTC MON OCT 06 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 OCT 06 2025.
24 HOUR FORECAST VALID 1200 UTC OCT 07 2025.
48 HOUR FORECAST VALID 1200 UTC OCT 08 2025.

.WARNINGS.


.NONE.

.SYNOPSIS AND FORECAST.

.TROUGH 26N150W 23N157W 23N166W MOVING SSE SLOWLY.
.24 HOUR FORECAST WEAKENING TROUGH 23N157W 19N164W 19N171W.
.48 HOUR FORECAST TROUGH DISSIPATED.

.TROUGH 30N149W 28N148W 26N145W MOVING SW 15 KT.
.24 HOUR FORECAST TROUGH 298150W 24N147W. NEW LOW FORMING NEAR
25N148W 1013 MB.
.48 HOUR FORECAST TROUGH 27N148W 27N143W 25N140W. LOW 26N148W
1013 MB.

.TROUGH 11N142W 09N143W 07N143W NEARLY STATIONARY. SCATTERED
MODERATE TSTMS WITHIN 90 NM EITHER SIDE OF TROUGH.
.24 HOUR FORECAST TROUGH 11N144W 08N144W.
.48 HOUR FORECAST TROUGH DISSIPATED INTO ITCZ.

.TROUGH 11N168E 05N169E MOVING W 10 KT.
.24 HOUR FORECAST TROUGH 11N164E 05N165E.
.48 HOUR FORECAST TROUGH DISSIPATED.

.TROUGH 09N161E 02N163E MOVING W SLOWLY.
.24 HOUR TROUGH DISSIPATED AND MOVED W OF AREA.

.LOW 10N154W 1008 MB MOVING SLOWLY W. SCATTERED MODERATE TSTMS
WITHIN 150 NM OF LOW.
.24 HOUR FORECAST LOW 10N160W 1010 MB.
.48 HOUR FORECAST LOW 11N159W 1011 MB.

.LOW 11N179W 1011 MB MOVING SLOWLY W. ISOLATED MODERATE TSTMS
WITHIN 150 W OF LOW.
.24 HOUR FORECAST LOW 10N179E 1010 MB.
.48 HOUR FORECAST LOW 10N177E 1011 MB.

.WINDS 20 TO 25 KT N OF 27N BETWEEN 155W AND 166W..AND WITHIN 350
NM OF FIRST TROUGH ABOVE BETWEEN 167W AND 175W.
.24 HOUR FORECAST WINDS N OF 27N BETWEEN 158W AND 167W.
.48 HOUR FORECAST WINDS FALLEN TO 20 KT OR LESS.

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

.24 HOUR FORECAST SEAS 2.5 TO 3 M N FIRST TROUGH ABOVE BETWEEN
157W AND 165W.
.48 HOUR FORECAST SEAS FALLEN TO 2.5 M OF LOWER.

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

.ITCZ FROM THIRD TROUGH ABOVE TO FIRST LOW ABOVE TO SECOND LOW
ABOVE TO FOURTH TROUGH ABOVE. SCATTERED MODERATE TSTMS WITHIN 100
NM OF ITCZ 09N144W 10N150W.

.SCATTERED MODERATE TSTMS WITHIN 90 NM OF 28N177E...AND
27N179W...N OF 28N BETWEEN 174E AND 172E...60 NM FROM
12N179E AND 18N161E...AND FROM 04N AND 13N W OF 172E.


$$

.FORECASTER BLOOD. HONOLULU HI.