924
FZPN40 PHFO 031502
HSFNP

HIGH SEAS FORECAST
NATIONAL WEATHER SERVICE HONOLULU HI
1700 UTC SUN AUG 03 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 AUG 03 2025.
24 HOUR FORECAST VALID 1200 UTC AUG 04 2025.
48 HOUR FORECAST VALID 1200 UTC AUG 05 2025.

.WARNINGS.

.NONE.

.SYNOPSIS AND FORECAST.

.LOW FORMER IONA 19N173E 1011 MB. TROUGH FROM 22N173E TO LOW TO
16N170E. LOW AND TROUGH MOVING NW 10 KT. WINDS 20 TO 30 KT WITHIN
210 NM NE SEMICIRCLE OF LOW. SEAS 2.5 TO 3 M FROM 27N TO 17N
BETWEEN 172E AND 179E. SCATTERED MODERATE TSTMS FROM 23N TO 15N
BETWEEN 170E AND 179E.
.24 HOUR FORECAST LOW WEAKENS TO TROUGH 25N172E 20N168E. WINDS 20
TO 25 KT FROM 25N TO 21N BETWEEN 169E AND 172E. SEAS LOWERED TO
2.5 M OR LOWER.
.48 HOUR FORECAST TROUGH 27N171E 24N166E. WINDS EASED TO 20 KT OR
LESS.

.LOW NEAR 26N164E 1009 MB. STATIONARY FRONT 30N166E TO 27N165E
THENCE TROUGH TO LOW TO 22N162E. TROUGH AND LOW MOVING NW SLOWLY.
WINDS 20 TO 25 KT WITHIN 180 NM E SEMICIRCLE OF LOW. ISOLATED
MODERATE TSTMS N OF 20N W OF 167E.
.24 HOUR FORECAST LOW NEAR 26N160E 1010 MB. TROUGH FROM 30N162E
TO LOW. WINDS EASED TO 20 KT OR LESS.
.48 HOUR FORECAST LOW AND TROUGH MOVED W OF AREA.

.TROUGH 10N165W 04N170W MOVING W 10 KT. ISOLATED MODERATE TSTMS
FROM 12N TO 09N BETWEEN 173W AND 160W.
.24 HOUR FORECAST TROUGH 12N175W 07N176W 04N179E.
.48 HOUR FORECAST TROUGH 13N179E 04N170E.

.24 HOUR FORECAST NEW LOW REMNANT OF TROPICAL CYCLONE GIL 21.7N
141.0W. WINDS 20 TO 30 KT FROM 27N TO 21N E OF 143W. SEAS 4 TO 5 M
FROM 25N TO 21N E OF 143W. SEAS 2.5 TO 4 M ELSEWHERE N OF 11N E
OF 147W.
.48 HOUR FORECAST LOW REMNANT OF TROPICAL CYCLONE GIL 22.0N
146.2W. WINDS 20 TO 30 KT FROM 25N TO 20N BETWEEN 149W AND 143W.
SEAS 2.5 TO 4 M N OF 20N BETWEEN 152W AND 141W.

SEE BULLETIN TCMEP2 ISSUED BY CPHC FOR MORE INFORMATION

FORECAST WINDS IN AND NEAR ACTIVE TROPICAL CYCLONES SHOULD BE
USED WITH CAUTION DUE TO UNCERTAINTY IN FORECAST TRACK...SIZE AND
INTENSITY.

.NE TO E WINDS 20 TO 30 KT FROM 25N TO 10N BETWEEN 175W AND 145W.
.24 HOUR FORECAST WINDS EASED TO 20 KT OR LESS.

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

.SEAS 2.5 TO 4 M FROM 24N TO 10N E OF 173W.
.24 HOUR FORECAST SEAS 2.5 TO 3 M FROM 19N TO 10N BETWEEN 179W
AND 150W.
.48 HOUR FORECAST SEAS LOWERED TO 2.5 M OR LOWER.

.SEAS 2.5 M OR LOWER REMAINDER OF FORECAST AREA.

.ITCZ 10N140W 07N149W 07N159W. ISOLATED MODERATE TSTMS WITHIN 150
NM OF ITCZ.

$$

.FORECASTER TROTTER. HONOLULU HI.