266
FZPS40 PHFO 200317
HSFSP

HIGH SEAS FORECAST
NATIONAL WEATHER SERVICE HONOLULU HI
0530 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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

SOUTH PACIFIC EQUATOR TO 25S BETWEEN 120W AND 160E

SYNOPSIS VALID 0000 UTC APR 20 2025.
24 HOUR FORECAST VALID 0000 UTC APR 21 2025.
48 HOUR FORECAST VALID 0000 UTC APR 22 2025.

.WARNINGS.

...GALE WARNING...
.LOW NEAR 22S177W 1007 MB MOVING SE 15 KT. TROUGH 25S178W
22S177W 18S176W 12S179W. MOVING SE SLOWLY. WINDS 25 TO 35 KT
FROM 23S TO 25S BETWEEN 172W AND 178W. WINDS 20 TO 30 KT
ELSEWHERE S OF 18S BETWEEN 140W AND 180W. ISOLATED MODERATE TSTMS
WITHIN 120 NM E OF TROUGH.
.24 HOUR FORECAST LOW MOVED S OF AREA. TROUGH 25S173W 19S172W
16S166W. WINDS 25 TO 35 KT S OF 23S BETWEEN 173W AND 168W.
WINDS 20 TO 30 KT ELSEWHERE S OF 17S BETWEEN 171W AND 137W.
.48 HOUR FORECAST LOW TROUGH 25S171W 22S169W 17S169W. WINDS 20
TO 30 KT S OF 19S BETWEEN 139W AND 170W.

.SYNOPSIS AND FORECAST.

.TROUGH 11S162E 12S169E MOVING S 10 KT. ISOLATED MODERATE TSTMS
WITHINT 120 NM N OF TROUGH.
.24 HOUR TROUGH 16S160E 15S163E 14S167E 13S171E.
.48 HOUR TROUGH 19S160E 15S163E 12S169E.

.FRONT 25S130W 23S134W 21S140W THENCE TROUGH 19S148W 15S157W
10S165W. FRONT MOVING E SLOWLY AND TROUGH MOVING SW SLOWLY.
ISOLATED MODERATE TSTMS WITHIN 120 NM OF TROUGH N OF 20S.
.24 HOUR FORECAST FRONT WEAKENED TO TROUGH 25S127W 16S149W.
.48 HOUR FORECAST TROUGH 25S171W 22S169W 17S169W.

.48 HOUR NEW TROUGH 15S160W 19S157W 21S154W.

.SEAS 12 TO 14 FT S OF 17S BETWEEN 146W AND 168W. SEAS 8 TO
12 FT ELSEWHERE S OF LINE 03S120W 08S136W 18S141W 14S155W
15S169W 20S179W 24S160E.
.24 HOUR FORECAST SEAS 12 TO 17 FT S OF LINE 25S150W 22S141W
17S162W 25S176W. SEAS 8 TO 12 FT ELSEWHERE S OF LINE 11S120W
07S131W 08S137W 18S141W 13S153W 13S160W 21S175W 22S160E.
.48 HOUR FORECAST SEAS 12 TO 16 FT S OF 20S BETWEEN 138W AND
165W. SEAS 8 TO 12 FT ELSEWHERE S OF LINE 09S120W 11S132W
15S136W 12S165W 21S175W 17S174E 25S171E.

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

$$

.FORECASTER M BALLARD. HONOLULU HI.