555
FZPN40 PHFO 221500
HSFNP

HIGH SEAS FORECAST
NATIONAL WEATHER SERVICE HONOLULU HI
1700 UTC TUE APR 22 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 APR 22 2025.
24 HOUR FORECAST VALID 1200 UTC APR 23 2025.
48 HOUR FORECAST VALID 1200 UTC APR 24 2025.

.WARNINGS.



.NONE.

.SYNOPSIS AND FORECAST.

.COLD FRONT 30N164W 25N169W 23N175W MOVING SE 10 KT. WARM
FRONT 30N161W 27N157W NEARLY STATIONARY. NE WINDS 20 TO 25 KT N OF
COLD FRONT. SCATTERED MODERATE TO STRONG TSTMS WITHIN 300 NM E OF
COLD FRONT...AND WITHIN 60 NM OF WARM FRONT.
.24 HOUR FORECAST COMPLEX LOW WITH MAIN CENTER NEAR 26N166W 1010
MB. COLD FRONT FROM LOW TO 23N165W 21N167W 19N171W. OCCLUDED FRONT
FROM LOW TO 27N169W 30N170W. WARM FRONT 30N158W 27N155W. N WINDS 20
TO 25 KT N OF 27N BETWEEN 169W AND 176W.
.48 HOUR FORECAST COMPLEX LOW WITH MAIN CENTER NEAR 27N167W 1010
MB. COLD FRONT 28N162W 25N163W 20N167W 17N172W. OCCLUDED FRONT
28N162W 30N164W 29N168W TO LOW. WINDS 20 TO 25 KT N OF 26N BETWEEN
154W AND 163W.

.FRONT 30N164E 26N160E. ISOLATED MODERATE TSTMS WITHIN 270 NM E OF
FRONT.
.24 HOUR FORECAST FRONT 30N171E 27N167E THENCE TROUGH 25N160E.
.48 HOUR FORECAST FRONT WEAKENED TO TROUGH 30N173E 27N171E.

.WINDS 20 TO 25 KT AND SEAS 8 TO 9 FT FROM 14N TO 05N E OF 151W.
.24 HOUR FORECAST WINDS 20 TO 25 KT AND SEAS 8 TO 9 FT FROM 14N TO
04N E OF 157W.
.48 HOUR FORECAST WINDS 20 TO 25 KT AND SEAS 8 TO 9 FT FROM 16N TO
07N E OF 152W.

.WINDS 20 KT OR LESS REMAINDER FORECAST AREA.

.24 HOUR FORECAST SEAS 8 TO 9 FT N OF 28N W OF 162E.
.48 HOUR FORECAST SEAS 8 TO 10 FT N OF 27N BETWEEN 175E AND 162E.

.SEAS 8 FT OR LOWER REMAINDER FORECAST AREA.

.ITCZ 03N140W 02N150W 02N173W 03N172E 02N168E. SCATTERED MODERATE
TSTMS WITHIN 120 NM OF ITCZ W OF 173W.

.ISOLATED MODERATE TSTMS FROM 19N TO 23N W OF 166E.



$$

.FORECASTER TSAMOUS. HONOLULU HI.