National Weather Service Weather Forecast Office

• Home
• Site Map
• News
• Organization
• Search for: NWS All NOAA 

000
FZPS40 PHFO 200334
HSFSP

HIGH SEAS FORECAST
NATIONAL WEATHER SERVICE HONOLULU HI
0530 UTC SAT APR 20 2024

SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 2024.
24 HOUR FORECAST VALID 0000 UTC APR 21 2024.
48 HOUR FORECAST VALID 0000 UTC APR 22 2024.

.WARNINGS.

...GALE WARNING...
.24 HOUR FORECAST NEW TROUGH FROM 20S168E TO 20S160E. SE WINDS
20 TO 30 KT S OF 22S W OF 167E.
.48 HOUR FORECAST NEW LOW NEAR 22S168E 1006 MB. TROUGH FROM
25S177E TO LOW TO 16S160E. WINDS 30 TO 35 KT WITHIN 240 NM
SW SEMICIRCLE OF LOW. WINDS 20 TO 30 KT ELSEWHERE S OF 20S
W OF 179E.

.SYNOPSIS AND FORECAST.

.TROUGH FROM 25S167E TO 21S164E MOVING SE 15 KT.
.TROUGH MOVED S OF AREA.

.TROUGH FROM 25S155W TO 16S156W MOVING MOVING E SLOWLY. SCATTERED
MODERATE TSTMS WITHIN 570 NM E OF TROUGH.
.24 HOUR FORECAST TROUGH FROM 25S151W TO 16S157W.
.48 HOUR FORECAST TROUGH FROM 25S148W TO 17S149W TO 10S160W.

.48 HOUR FORECAST NEW TROUGH FROM 17S178E TO 03S168E.

.E TO SE WINDS 20 TO 25 KT S OF 18S E OF 137W.
.24 HOUR FORECAST E TO SE WINDS 20 TO 25 KT S OF 17S E OF 140W.
.48 HOUR FORECAST E TO SE WINDS 20 TO 25 KT S OF 16S E OF 143W.

.SEAS 8 TO 11 FT S OF 18S E OF 137W.
.24 HOUR FORECAST SEAS 8 TO 10 FT S OF 18S E OF 138W.
.48 HOUR FORECAST SEAS 8 TO 12 FT ELSEWHERE S OF 20S W OF 174E.
SEAS 8 TO 11 FT S OF 14S E OF 144W.

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

.ISOLATED MODERATE TSTMS FROM 10S TO 03S BETWEEN 172W AND 170E.

.ISOLATED MODERATE TSTMS FROM 20S TO 13S BETWEEN 180E AND 168E.

$$

.FORECASTER FOSTER. HONOLULU HI.