The High Seas Forecast for the Central North Pacific

High Seas Forecast Issued: 12/02/2025 01:16:47 AM UTC
                        
488
FZPN40 PHFO 011516
HSFNP

HIGH SEAS FORECAST
NATIONAL WEATHER SERVICE HONOLULU HI
1700 UTC MON DEC 01 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 DEC 01 2025.
24 HOUR FORECAST VALID 1200 UTC DEC 02 2025.
48 HOUR FORECAST VALID 1200 UTC DEC 03 2025.

.WARNINGS.

...GALE WARNING...
.FRONT 30N164W 23N171W 19N177E 16N160E. FRONT MOVING NE 15 KT.
WINDS 30 TO 40 KT N OF 29N BETWEEN 164W AND 163W. WINDS 20 TO 30
KT ELSEWHERE 30N167E 27N173E 29N173E 30N165W 24N171W 28N158W
30N156W. SCATTERED MODERATE TSTMS N OF 22N BETWEEN FRONT AND
154W.
.24 HOUR FORECAST FRONT 30N159W 25N164W 21N171W 17N176E 16N160E.
WINDS 20 TO 25 KT N OF 27N BETWEEN 175E AND 168W...AND FROM 24N TO
16N W OF 176E.
.48 HOUR FORECAST FRONT 30N157W 22N162W 18N172W 15N174E 15N160E.
WINDS 20 TO 30 KT N OF 25N BETWEEN 178W AND 165W. WINDS 20 TO 25
KT FROM 21N TO 14N BETWEEN 165E AND 175W.

.SYNOPSIS AND FORECAST.

.FRONT 23N140W 23N144W 25N147W MOVING S SLOWLY.
.24 HOUR FORECAST FRONT BECAME TROUGH 20N140W 22N148W.
.48 HOUR FORECAST TROUGH DISSIPATED.

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

.SEAS 4 TO 5 M N OF LINE 30N168E 28N168E 27N179W 29N177W 26N169W
30N162W. SEAS 2.5 TO 4 M ELSEWHERE N OF LINE 09N160E 11N170E
00N174E 00N162W 09N149W 22N160W 14N146W 21N140W.
.24 HOUR FORECAST SEAS 4 TO 5.5 M N OF LINE 30N172E 23N177E
27N173W 30N167W. SEAS 2.5 TO 4 M ELSEWHERE N OF LINE 12N160E
20N174W 23N162W 30N156W...AND E OF LINE 00N174E 11N176W 18N158W
30N148W...EXCEPT S OF LINE 00N147W 10N140W.
.48 HOUR FORECAST 4 TO 5 M N OF LINE 30N176E 23N176W 30N167W.
SEAS 2.5 TO 4 M ELSEWHERE N OF LINE 06N160E 08N174W 20N166W
30N154W.

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

.ITCZ 08N140W 07N160W 07N169W 08N175W 07N179E 07N160E. SCATTERED
MODERATE TO STRONG TSTMS WITHIN 270 NM OF ITCZ W OF 179E...AND
WITHIN 150 NM OF ITCZ E OF 165W.


$$

.FORECASTER PIERCE. HONOLULU HI.