601
FZPN40 PHFO 110308
HSFNP

HIGH SEAS FORECAST
NATIONAL WEATHER SERVICE HONOLULU HI
0500 UTC SAT OCT 11 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 0000 UTC OCT 11 2025.
24 HOUR FORECAST VALID 0000 UTC OCT 12 2025.
48 HOUR FORECAST VALID 0000 UTC OCT 13 2025.

.WARNINGS.

.NONE.

.SYNOPSIS AND FORECAST.

.FRONT 30N165E 26N160E MOVING E 10 KT. WINDS 20 TO 25 KT N OF 28N
W OF 175E. SEAS 4 TO 5 M N OF LINE 30N166E 27N162E 27N160E. SEAS
2.5 TO 4 M ELSEWHERE N OF LINE 30N170E 25N160E. SCATTERED MODERATE
TSTMS WITHIN 150 NM E OF FRONT.
.24 HOUR FORECAST FRONT 30N173E 25N160E. WINDS EASED TO 20 KT OR
LESS. SEAS 4 TO 5 M N OF LINE 30N178E 25N171E 27N161E 30N163E.
SEAS 2.5 TO 4 M ELSEWHERE N OF LINE 30N173W 22N172E 19N160E.
.48 HOUR FORECAST FRONT 30N176E 29N165E 28N160E. SEAS 2.5 TO 4.5
M N OF LINE 30N167W 18N171E 17N160E.

.TROUGH 30N148W 26N160W 21N169W NEARLY STATIONARY. ISOLATED
MODERATE TSTMS WITHIN 150 NM OF TROUGH N OF 23N.
.24 HOUR FORECAST TROUGH 30N153W 24N158W 22N162W.
.48 HOUR FORECAST TROUGH 30N155W 23N160W 20N164W.

.TROUGH 17N164W 10N172W 04N175E MOVING W SLOWLY. ISOLATED
MODERATE TSTMS FROM 10N TO 04N BETWEEN 175E AND 173W.
.24 HOUR FORECAST TROUGH 18N169W 13N169W 06N176E.
.48 HOUR FORECAST TROUGH 16N174W 12N174W 06N173E.

.TROUGH 14N150W 10N154W MOVING W 10 KT. ISOLATED MODERATE TSTMS
WITHIN 150 NM OF TROUGH.
.24 HOUR FORECAST TROUGH 12N158W 06N167W. SEAS 2.5 TO 3 M FROM
15N TO 12N BETWEEN 158W AND 151W.
.48 HOUR FORECAST TROUGH 12N158W 06N162W. SEAS 2.5 TO 3 M FROM
15N TO 11N BETWEEN 165W AND 160W.

.TROUGH 10N168E 05N161E MOVING NW SLOWLY. ISOLATED MODERATE TSTMS
S OF 09N W OF 168E.
.24 HOUR FORECAST TROUGH 12N165E 07N160E.
.48 HOUR FORECAST TROUGH MOVED W OF AREA.

.48 HOUR FORECAST NEW TROUGH 30N160W 27N166W.

.WINDS 20 KT OR LESS AND SEAS 2.5 M OR LOWER OVER REMAINDER OF
FORECAST AREA.

.ITCZ 08N140W 09N147W...AND 10N157W 08N165W. ISOLATED MODERATE
TSTMS WITHIN 120 NM OF ITCZ W OF 156W.

$$

.FORECASTER TROTTER. HONOLULU HI.