238
FZPN40 PHFO 261521
HSFNP

HIGH SEAS FORECAST
NATIONAL WEATHER SERVICE HONOLULU HI
1700 UTC SAT JUL 26 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 26 2025.
24 HOUR FORECAST VALID 1200 UTC JUL 27 2025.
48 HOUR FORECAST VALID 1200 UTC JUL 28 2025.

.WARNINGS.

.NONE.

.SYNOPSIS AND FORECAST.

.LOW 11N142W 1010 MB MOVING W 10 KT. MONSOON TROUGH 11N140W TO
LOW TO 12N151W. ISOLATED MODERATE TSTMS WITHIN 300 NM OF MONSOON
TROUGH.
.24 HOUR FORECAST LOW...POSSIBLE TROPICAL CYCLONE...NEAR 12N145W
1008 MB. TROUGH 11N140W TO LOW TO 11N151W. E TO NE WINDS 20 TO 25
KT WITHIN 150 NM N SEMICIRCLE OF LOW.
.48 HOUR FORECAST LOW...POSSIBLE TROPICAL CYCLONE...NEAR 11N148W
1004 MB. TROUGH 11N140W 11N143W TO LOW TO 10N151W. WINDS
20 TO 30 KT AND SEAS 2.5 TO 3 M WITHIN 210 NM N SEMICIRCLE OF LOW.
WINDS 20 TO 25 KT WITHIN 180 NM E SEMICIRCLE OF LOW.

.TROUGH 30N176E 28N171E 27N166E MOVING E SLOWLY. ISOLATED MODERATE
TSTMS WITHIN 90 NM OF TROUGH.
.24 HOUR FORECAST TROUGH LITTLE CHANGE
.48 HOUR FORECAST TROUGH LITTLE CHANGE.

.WEAK TROUGH 24N147W 22N150W 18N152W MOVING W 10 KT.
.24 HOUR FORECAST TROUGH 26N148W 24N151W 21N153W.
.48 HOUR FORECAST TROUGH 26N150W 23N155W.

.TROUGH 14N166E 09N164E MOVING W 15 KT. ISOLATED MODERATE TSTMS
WITHIN 180 NM OF TROUGH.
.24 HOUR FORECAST TROUGH DISSIPATED.

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

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

.ITCZ 12N153W TO 10N162W. ISOLATED MODERATE TSTMS WITHIN 180 NM OF
ITCZ.

.SCATTERED MODERATE TSTMS N OF 27N BETWEEN 163W AND 168W.

$$

.FORECASTER THOMAS. HONOLULU HI.