The High Seas Forecast for the Central North Pacific

High Seas Forecast Issued: 12/05/2025 01:37:27 PM UTC
                        
326
FZPN40 PHFO 050337
HSFNP

HIGH SEAS FORECAST
NATIONAL WEATHER SERVICE HONOLULU HI
0500 UTC FRI DEC 05 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 DEC 05 2025.
24 HOUR FORECAST VALID 0000 UTC DEC 06 2025.
48 HOUR FORECAST VALID 0000 UTC DEC 07 2025.

.WARNINGS.

.NONE.

.SYNOPSIS AND FORECAST.

.TROUGH 30N157W 23N161W 16N169W 13N173W MOVING W SLOWLY. SCATTERED
MODERATE TSTMS WITHIN 270 NM W OF TROUGH S OF 23N.
.24 HOUR FORECAST TROUGH 30N160W 20N167W 13N172W.
.48 HOUR FORECAST TROUGH 30N160W 23N172W.

.FRONT 30N164E 26N160E MOVING E 10 KT. WINDS 20 TO 25 KT WITHIN
150 NM E OF FRONT N OF 28N.
.24 HOUR FORECAST FRONT 30N165E 27N160E. WINDS DIMINISHED TO 20 KT
OR LESS.
.48 HOUR FORECAST FRONT 30N170E 28N160E.

.48 HOUR FORECAST NEW TROUGH 12N172W 01N178E.

.WINDS 20 TO 30 KT FROM 20N TO 11N BETWEEN 164E AND 175W.
.24 HOUR FORECAST WINDS 20 TO 30 KT FROM 22N TO 09N W OF 175W.
.48 HOUR FORECAST WINDS DIMINISHED TO 20 KT OR LESS.

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

.SEAS 4 TO 5 M N OF LINE 30N178W 25N169W 30N164W. SEAS 2.5 TO 4 M
ELSEWHERE N OF LINE 11N160E 04N176W 30N146W.
.24 HOUR FORECAST SEAS 4 TO 5 M FROM 22N TO 12N BETWEEN 164E AND
171W. SEAS 2.5 TO 4 M ELSEWHERE N OF LINE 10N160E 05N176E 10N140W.
.48 HOUR FORECAST SEAS 2.5 TO 4 M N OF 05N W OF 180E. SEAS 2.5 TO
3 M FROM 25N TO 05N E OF 180E.

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

.ITCZ 06N140W 09N149W 06N151W 06N169W 03N176E 03N161E. ISOLATED
MODERATE TSTMS WITHIN 180 NM OF ITCZ.

$$

.FORECASTER AHUE. HONOLULU HI.