197
FZPN40 PHFO 201043
HSFNP

HIGH SEAS FORECAST
NATIONAL WEATHER SERVICE HONOLULU HI
1100 UTC SUN APR 20 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 APR 20 2025.
24 HOUR FORECAST VALID 0600 UTC APR 21 2025.
48 HOUR FORECAST VALID 0600 UTC APR 22 2025.

.WARNINGS.

.NONE.

.SYNOPSIS AND FORECAST.

.48 HOUR FORECAST NEW FRONT 30N164E 24N160E.

.48 HOUR FORECAST NEW TROUGH 30N168W 27N170W 23N173W. WINDS 20 TO
25 KT N OF 26N BETWEEN 169W AND 176W.

.NE WINDS 20 TO 25 KT E OF LINE 18N140W 18N148W 13N158W 06N170W
07N140W.
.24 HOUR FORECAST NE WINDS 20 TO 25 KT FROM 12N TO 06N E OF 171W.
.48 HOUR FORECAST NE WINDS 20 TO 25 KT FROM 15N TO 07N E OF 151W.

.SEAS 8 TO 10 FT E OF LINE 18N140W 19N148W 14N162W 09N174E 03N178E
02N145W 05N140W. SEAS 8 TO 9 FT FROM 26N TO 16N BETWEEN 177W AND
167E.
.24 HOUR FORECAST SEAS 8 TO 10 FT FROM 16N TO 01N E OF 177W.
.48 HOUR FORECAST SEAS 8 TO 10 FT FROM 14N TO 03N E OF 178W.

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

.ITCZ 06N171E 05N165E 03N160E. ISOLATED MODERATE TSTMS WITHIN 120
NM OF ITCZ.


$$

.FORECASTER PIERCE. HONOLULU HI.