The High Seas Forecast for the Central North Pacific

High Seas Forecast Issued: 09/10/2025 01:40:04 PM UTC
                        
452
FZPN40 PHFO 100340
HSFNP

HIGH SEAS FORECAST
NATIONAL WEATHER SERVICE HONOLULU HI
0500 UTC WED SEP 10 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 SEP 10 2025.
24 HOUR FORECAST VALID 0000 UTC SEP 11 2025.
48 HOUR FORECAST VALID 0000 UTC SEP 12 2025.

.WARNINGS.

...TROPICAL STORM WARNING...
.TROPICAL STORM KIKO NEAR 22.7N 155.7W 1008 MB AT 0000 UTC SEP 10
MOVING WNW OR 285 DEG AT 12 KT. MAXIMUM SUSTAINED WINDS 35 KT
GUSTS 45 KT. TROPICAL STORM FORCE WINDS WITHIN 0 NM S
SEMICIRCLE...80 NM NE QUADRANT AND 60 NM NW QUADRANT. WINDS 20 TO
33 KT ELSEWHERE FROM 25N TO 22N BETWEEN 158W AND 151W. SEAS 4 M OR
GREATER WITHIN 60 NM S SEMICIRCLE...180 NM NE QUADRANT AND 150 NM
NW QUADRANT WITH SEAS TO 6.0 M. SEAS 2.5 TO 4 M ELSEWHERE N OF
20N BETWEEN 159W AND 149W. NUMEROUS MODERATE TO LOCALLY STRONG
TSTMS FROM 25N TO 22N BETWEEN 157W AND 154W.
.24 HOUR FORECAST TROPICAL DEPRESSION KIKO NEAR 24.1N 160.5W.
MAXIMUM SUSTAINED WINDS 30 KT GUSTS 40 KT. WINDS 20 TO 30 KT
ELSEWHERE FROM 27N TO 24N BETWEEN 162W AND 157W. SEAS 2.5 TO 4 M N
OF 22N BETWEEN 163W AND 155W.
.48 HOUR FORECAST POST-TROPICAL REMNANT LOW KIKO NEAR 25.6N
164.6W. MAXIMUM SUSTAINED WINDS 25 KT GUSTS 35 KT. WINDS 20 TO 25
KT FROM 27N TO 25N BETWEEN 168W AND 163W. SEAS 2.5 TO 3 M N OF 25N
BETWEEN 166W AND 160W.

FORECAST WINDS IN AND NEAR ACTIVE TROPICAL CYCLONES SHOULD BE
USED WITH CAUTION DUE TO UNCERTAINTY IN FORECAST TRACK...SIZE AND
INTENSITY.

.SYNOPSIS AND FORECAST.

.TROUGH 30N168W 25N169W 20N169W MOVING W 10 KT.
.24 HOUR FORECAST TROUGH 30N171W 24N175W 17N175E.
.48 HOUR FORECAST TROUGH 28N179E 24N179E 18N177E.

.TROUGH 26N161E 15N160E MOVING W 10 KT. NUMEROUS MODERATE TSTMS
FROM 28N TO 22N W OF 173E. SCATTERED MODERATE TSTMS FROM 21N TO
14N W OF 169E.
.24 HOUR FORECAST TROUGH MOVED W OF AREA.

.48 HOUR FORECAST NEW TROUGH 13N167E 11N160E.

.WINDS 20 KT OR LESS AND SEAS LESS THAN 2.5 M OVER REMAINDER OF
FORECAST AREA.

.ITCZ 09N140W 09N153W 08N163W 11N170W 09N160E. SCATTERED MODERATE
TO STRONG TSTMS FROM 13N TO 03N BETWEEN 163E AND 171W. ISOLATED
MODERATE TSTMS ELSEWHERE FROM 11N TO 06N BETWEEN 171W AND 156W.

.SCATTERED MODERATE TSTMS N OF 28N W OF 163E. ISOLATED MODERATE
TSTMS FROM 26N TO 23N BETWEEN 162W AND 159W.

$$

.FORECASTER TROTTER. HONOLULU HI.
Hurricane Kiko to enter the Central Pacific

The High Seas Forecast for the Central North Pacific
