The High Seas Forecast for the Central North Pacific

High Seas Forecast Issued: 05/01/2025 08:03:20 AM UTC
                        
550
FZPN40 PHFO 302203
HSFNP

HIGH SEAS FORECAST
NATIONAL WEATHER SERVICE HONOLULU HI
2300 UTC WED APR 30 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 1800 UTC APR 30 2025.
24 HOUR FORECAST VALID 1800 UTC MAY 01 2025.
48 HOUR FORECAST VALID 1800 UTC MAY 02 2025.

.WARNINGS.



.NONE.

.SYNOPSIS AND FORECAST.

.FRONT 30N161W 26N173W 26N177E 30N172E MOVING NE 20 KT.
.24 HOUR FORECAST FRONT 30N148W 26N156W 22N166W.
.48 HOUR FORECAST FRONT 29N140W 27N150W THENCE TROUGH 26N162W
25N168W 21N173W.

.TROUGH 30N154W 26N159W 23N160W 21N160W NEARLY STATIONARY.
.24 HOUR FORECAST TROUGH MERGED WITH FRONT DIRECTLY DESCRIBED
ABOVE.

.24 HOUR FORECAST NEW FRONT JUST NW OF AREA NEAR 30N160E.
.48 HOUR FORECAST FRONT 30N174E 28N170E 27N163E.

.48 HOUR FORECAST TROUGH 25N170W 21N175W 17N178W.

.NE TO E WINDS 20 TO 25 KT FROM 06N TO 17N E OF 162W... AND N OF
A LINE 30N156W 19N164W 19N168E.
.24 HOUR FORECAST WINDS 20 TO 25 KT FROM 07N TO 17N E OF
161W...AND N OF A LINE 30N148W 23N160W 17N169W 17N177E.
.48 HOUR FORECAST WINDS 20 TO 25 KT FROM 06N TO 18N BETWEEN 145W
AND 164W... AND FROM 27N TO 29N BETWEEN 145W AND 154W.

.SEAS 8 TO 10 FT N OF 27N BETWEEN 164W AND 170W. SEAS 8 TO 9 FT
ELSEWHERE N OF A LINE 30N158W 20N170W 21N176E.
.24 HOUR FORECAST SEAS 8 TO 9 FT N OF A LINE 30N151W 24N157W
24N158W. SEAS 8 TO 9 FT FROM 06N TO 15N E OF 160W.
.48 HOUR FORECAST SEAS 8 TO 9 FT FROM 06N TO 17N E OF 160W.

.REMAINDER OF AREA WINDS 20 KT OR LESS. SEAS 8 FT OR LESS.

.ITCZ FROM 06N140W 07N157W 02N177W. ISOLATED MODERATE TSTMS WITHIN
120 NM OF ITCZ .

.ISOLATED MODERATE TSTMS S OF 08S W OF 171W...AND FROM 16N TO 19N
BETWEEN 174E AND 168E.


$$

.FORECASTER TSAMOUS. HONOLULU HI.