520
FZPN40 PHFO 201015
HSFNP

HIGH SEAS FORECAST
NATIONAL WEATHER SERVICE HONOLULU HI
1100 UTC THU NOV 20 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 0600 UTC NOV 20 2025.
24 HOUR FORECAST VALID 0600 UTC NOV 21 2025.
48 HOUR FORECAST VALID 0600 UTC NOV 22 2025.

.WARNINGS.

.NONE.

.SYNOPSIS AND FORECAST.

.FRONT 30N175E 28N169E 28N163E 28N160E MOVING E 10 KT.
.24 HOUR FORECAST FRONT 30N179E 28N171E 30N164E.
.48 HOUR FORECAST FRONT DISSIPATED.

.TROUGH 30N164W 22N174W 19N179W MOVING W 15 KT. ISOLATED
MODERATE TSTMS WITHIN 120 NM OF TROUGH.
.24 HOUR FORECAST TROUGH 28N171W 22N179E 21N172E.
.48 HOUR FORECAST TROUGH DISSIPATED.

.24 HOUR FORECAST NEW FRONT 30N163E 28N160E.
.48 HOUR FORECAST FRONT 30N171E 28N165E.

.WINDS 20 TO 30 KT IN AREA BOUNDED BY 21N160E 24N173E 25N172W
16N178E 10N160E 21N160E. WINDS 20 TO 25 KT FROM 26N TO 09N E OF
162W.
.24 HOUR FORECAST WINDS 20 TO 25 KT FROM 24N TO 12N W OF
178E...AND FROM 25N TO 06N E OF 164W.
.48 HOUR FORECAST WINDS 20 TO 25 KT FROM 18N TO 09N E OF 150W.

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

.SEAS 2.5 TO 4 M N OF LINE 07N160E 08N172E 11N167E 07N164W
08N140W...EXCEPT AREA BOUNDED BY 25N160E 30N175E 30N174W 21N160E
25N160E.
.24 HOUR FORECAST SEAS 2.5 TO 4 M N OF 06N EXCEPT N OF 21N
BETWEEN 176W AND 165W.
.48 HOUR FORECAST SEAS 2.5 TO 4 M N OF LINE 07N160E 10N168E
07N172E 11N171W 06N164W 01N151W 04N140W...EXCEPT N OF LINE 30N174E
25N160E.

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

.ITCZ 07N140W 09N159W 10N174W 10N170E 09N160E. SCATTERED MODERATE
TSTMS WITHIN 240 NM OF ITCZ E OF 175W...AND FROM 12N TO 02N W OF
170E.


$$

.FORECASTER PIERCE. HONOLULU HI.