377
FZPN40 PHFO 160327
HSFNP

HIGH SEAS FORECAST
NATIONAL WEATHER SERVICE HONOLULU HI
0500 UTC THU OCT 16 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 16 2025.
24 HOUR FORECAST VALID 0000 UTC OCT 17 2025.
48 HOUR FORECAST VALID 0000 UTC OCT 18 2025.

.WARNINGS.

.NONE.

.SYNOPSIS AND FORECAST.

.FRONT 30N169E 27N164E 27N160E MOVING NE 20 KT E OF 162E AND
NEARLY STATIONARY ELSEWHERE. SEAS 2.5 TO 3.5 M N OF LINE 30N172E
23N160E. ISOLATED MODERATE TSTMS WITHIN 90 NM OF FRONT.
.24 HOUR FORECAST FRONT 30N175E 29N164E 29N160E. SEAS LOWERED TO
2.5 M OR LOWER.
.48 HOUR FORECAST FRONT MOVED N OF AREA.

.TROUGH 30N154W 23N159W MOVING W 10 KT. ISOLATED MODERATE TSTMS
FROM 28N TO 23N BETWEEN 159W AND 151W.
.24 HOUR FORECAST TROUGH 28N161W 21N161W.
.48 HOUR FORECAST TROUGH 30N163W 22N162W.

.TROUGH 30N168W 24N173W MOVING W 10 KT.
.24 HOUR FORECAST TROUGH 30N174W 22N179W.
.48 HOUR FORECAST TROUGH DISSIPATED.

.TROUGH 15N158W 08N163W MOVING W 10 KT. ISOLATED MODERATE TSTMS
WITHIN 240 NM OF TROUGH S OF 14N.
.24 HOUR FORECAST TROUGH DISSIPATED.

.LOW NEAR 08N177W 1008 MB. TROUGH FROM 16N175W TO LOW TO 04N177W.
TROUGH AND LOW MOVING W 10 KT. ISOLATED MODERATE TO LOCALLY
STRONG TSTMS FROM 12N TO 05N BETWEEN 176E AND 173W.
.24 HOUR FORECAST LOW DISSIPATED. TROUGH 12N178W 06N179W.
.48 HOUR FORECAST TROUGH 12N178E 04N165E.

.48 HOUR FORECAST NEW FRONT 30N163E 27N160E. WINDS 20 TO 25 KT N
OF LINE 30N164E 28N160E.

.24 HOUR FORECAST WINDS 20 TO 25 KT N OF 20N E OF 158W.
.48 HOUR FORECAST WINDS EASED TO 20 KT OR LESS.

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

.SEAS 2.5 TO 3 M FROM 23N TO 08N BETWEEN 177E AND 168W.
.24 HOUR FORECAST SEAS 2.5 TO 3 M N OF LINE 30N167W 26N166W
26N157W 15N151W 13N140W.
.48 HOUR FORECAST SEAS 2.5 TO 3 M N OF LINE 30N160W 25N163W
20N154W 15N151W 10N140W.

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

.ITCZ 09N140W 07N155W...AND 09N166W 08N173W.
SCATTERED MODERATE TSTMS WITHIN 240 NM S OF ITCZ W OF 167W AND
WITHIN 120 NM OF ITCZ E OF 155W.

.SCATTERED MODERATE TSTMS FROM 26N TO 15N BETWEEN 167E AND 176E.

$$

.FORECASTER TROTTER. HONOLULU HI.