Expires:No;;749475
FZPN40 PHFO 010315
HSFNP 

HIGH SEAS FORECAST
NATIONAL WEATHER SERVICE HONOLULU HI
0500 UTC THU MAY 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 0000 UTC MAY 01 2025.
24 HOUR FORECAST VALID 0000 UTC MAY 02 2025.
48 HOUR FORECAST VALID 0000 UTC MAY 03 2025.

.WARNINGS.



.NONE.

.SYNOPSIS AND FORECAST.

.FRONT 30N160W 26N170W 25N177W 26N177E MOVING NE 20 KT. 
.24 HOUR FORECAST FRONT 30N145W 26N155W 25N163W.
.48 HOUR FORECAST FRONT 29N140W 27N146W THENCE TROUGH 26N160W
27N166W.

.TROUGH 30N153W 25N160W 23N160W 22N162W MOVING E 10 KT N OF 
26N...AND MOVING W 10 KT S OF 26N.
.24 HOUR FORECAST TROUGH MERGED WITH FRONT DIRECTLY DESCRIBED 
ABOVE. 

.24 HOUR FORECAST NEW FRONT 30N165E 28N160E.
.48 HOUR FORECAST FRONT 30N176E 28N173E 27N167E.

.48 HOUR FORECAST TROUGH 26N171W 19N178W.

.NE TO E WINDS 20 TO 25 KT N OF A LINE 30N156W 18N170W 18N170E.
.24 HOUR FORECAST WINDS 20 TO 25 KT FROM 23N TO 27N BETWEEN 161W
AND 175W.
.48 HOUR FORECAST WINDS 20 TO 25 KT FROM 06N TO 19N BETWEEN 141W 
AND 162W... AND FROM 27N TO 29N BETWEEN 141W AND 154W. 

.SEAS 8 TO 9 FT N OF A LINE 30N160W 20N176W...AND FROM 22N AND 26N
BETWEEN 175W AND 176W.
.24 HOUR FORECAST SEAS 8 TO 9 FT FROM 23N TO 27N BETWEEN 160W AND
170W. 
.48 HOUR FORECAST SEAS 8 TO 9 FT FROM 06N TO 18N BETWEEN 141W AND
164W. 

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

.ITCZ FROM 06N140W 07N158W 02N176W. ISOLATED MODERATE TSTMS WITHIN
120 NM OF ITCZ. 

.ISOLATED MODERATE TSTMS S OF 08S W OF 176W. 



$$

.FORECASTER TSAMOUS. HONOLULU HI.