173
FZPN40 PHFO 092239
HSFNP

HIGH SEAS FORECAST
NATIONAL WEATHER SERVICE HONOLULU HI
2300 UTC SUN AUG 09 2026

SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 180W

SYNOPSIS VALID 1800 UTC AUG 09 2026.
24 HOUR FORECAST VALID 1800 UTC AUG 10 2026.
48 HOUR FORECAST VALID 1800 UTC AUG 11 2026.

.WARNINGS.

.NONE.

.SYNOPSIS AND FORECAST

.WEAK TROUGH 30N163W 26N165W MOVING W 5 KT. ISOLATED MODERATE
TSTMS WITHIN 90 NM OF TROUGH S OF 27N.
.24 HOUR FORECAST TROUGH DISSIPATED.

.TROUGH 14N155W 10N155W MOVING W 10 KT.
.24 HOUR FORECAST TROUGH 15N160W 08N160W.
.48 HOUR FORECAST TROUGH 13N164W 08N164W.

.LOW 10N142W 1008 MB MOVING W 5 KT.
.24 HOUR FORECAST LOW 10N143W 1007 MB.
.48 HOUR FORECAST LOW 10N144W 1006 MB. WINDS 20 TO 30 KT FROM 05N
TO 15N E OF 144W. TROPICAL CYCLONE POSSIBLE.

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

.SEAS 2.5 TO 3 M FROM 12N TO 15N BETWEEN 145W AND 140W.
.24 HOUR FORECAST SEAS 2.5 TO 3 M FROM 12N TO 15N BETWEEN
150W AND 145W.
.48 HOUR FORECAST SEAS INCREASING TO 2.5 TO 4 M FROM 07N TO
17N E OF 145W.

.ITCZ 10N180W 07N170W 08N155W. ISOLATED MODERATE TSTMS WITHIN
120 NM OF ITCZ.

.MONSOON TROUGH 11N147W 10N140W.

$$

.FORECASTER PECHACEK. HONOLULU HI.