The High Seas Forecast for the Central North Pacific

High Seas Forecast Issued: 11/01/2025 08:24:28 PM UTC
                        
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FZPN40 PHFO 011024
HSFNP

HIGH SEAS FORECAST
NATIONAL WEATHER SERVICE HONOLULU HI
1100 UTC SAT NOV 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 0600 UTC NOV 01 2025.
24 HOUR FORECAST VALID 0600 UTC NOV 02 2025.
48 HOUR FORECAST VALID 0600 UTC NOV 03 2025.

.WARNINGS.

...GALE WARNING...
.FRONT 30N150W 27N167W 27N176W 30N177E MOVING ESE SLOWLY. WINDS 20
TO 25 KT N OF FRONT. ISOLATED MODERATE TSTMS N OF 28N BETWEEN
176E AND 178W.
 .24 HOUR FORECAST NEW LOW NEAR 30N152W 1017 MB. FRONT FROM LOW
TO 27N156W 22N170W. WINDS 25 TO 30 KT N OF FRONT.
.48 HOUR FORECAST LOW MOVED N OF FORECAST AREA. FRONT 30N148W
25N158W 22N162W 18N172W. WINDS 30 TO 35 KT IN AREA BOUNDED BY
25N166W 27N163W 27N162W 24N166W 25N166W.

.SYNOPSIS AND FORECAST.

.TROUGH 18N178W 12N176W 08N179E 05N173E MOVING NW 10 KT. WINDS 20
TO 25 KT FROM 24N TO 16N BETWEEN 167E AND 171W. SCATTERED MODERATE
TSTMS FROM 21N TO 01N BETWEEN 177E AND 169W...AND WITHIN 240 NM S
OF TROUGH W OF 177E.
.24 HOUR TROUGH 21N174E 13N178E 08N176E 06N171E. WINDS 20 TO 25
KT FROM 24N TO 16N W OF 171W.
.48 HOUR FORECAST TROUGH 21N166E 10N167E 06N165E. WINDS 20 TO 25
KT FROM 24N TO 17N W OF 173E.

.TROUGH 19N166E 13N160E MOVING SW 10 KT. ISOLATED MODERATE TSTMS
WITHIN 150 NM OF TROUGH.
.24 HOUR FORECAST TROUGH MOVED W OF AREA.

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

SEAS 2.5 TO 4 M N OF LINE 30N173E 24N166E 16N165E 15N179E 22N170W
26N175W 25N159W 30N142W.
.24 HOUR FORECAST SEAS 4 TO 5 M FROM 27N TO 25N BETWEEN 175W AND
161W. SEAS 2.5 TO 4 M ELSEWHERE N OF LINE 30N171E 25N160E 15N160E
15N170W 22N158W 15N148W 21N140W.
.48 HOUR FORECAST SEAS 4 TO 5.5 M IN AREA BOUNDED BY 24N176E
30N160W 29N154W 23N166W 19N167W 19N177W 24N176E...AND FROM 23N TO
19N BETWEEN 161E AND 173E. SEAS 2.5 TO 4 M ELSEWHERE N OF LINE
15N160E 11N172E 11N170W 16N171W 19N160W 12N146W 16N140W.

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

.ITCZ 08N140W 10N148W 07N155W 08N165W. ISOLATED MODERATE TSTMS
WITHIN 120 NM OF ITCZ.

.ISOLATED MODERATE TSTMS FROM 11N TO 06N W OF 166E...AND FROM 24N
TO 18N E OF 147W.


$$

.FORECASTER PIERCE. HONOLULU HI.