The High Seas Forecast for the South Pacific

High Seas Forecast Issued: 12/23/2024 08:28:45 AM UTC
                        
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FZPS40 PHFO 222228
HSFSP

HIGH SEAS FORECAST
NATIONAL WEATHER SERVICE HONOLULU HI
2330 UTC SUN DEC 22 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 1800 UTC DEC 22 2024.
24 HOUR FORECAST VALID 1800 UTC DEC 23 2024.
48 HOUR FORECAST VALID 1800 UTC DEC 24 2024.

.WARNINGS.

.NONE.

.SYNOPSIS AND FORECAST.

.LOW NEAR 20S147W 1011 MB MOVING SE SLOWLY. FRONT FROM 25S139W TO
22S144W THENCE TROUGH 22S143W TO LOW TO 17S150W TO 14S155W. FRONT
AND TROUGH NEARLY STATIONARY N OF 24S AND FRONT MOVING SE SLOWLY
S OF 24S. WINDS 20 TO 25 KT S OF LINE 25S129W 14S146W 25S136W.
ISOLATED MODERATE TSTMS WITHIN 150 NM OF TROUGH AND FRONT.
.24 HOUR FORECAST LOW NEAR 21S145W 1014 MB. FRONT 25S137W 23S142W
THENCE TROUGH 22S142W TO LOW TO 17S152W. WINDS EASED TO 20 KT OR
LESS.
.48 HOUR FORECAST LOW DISSIPATED. FRONT MOVED S OF AREA. TROUGH
25S134W 19S147W 20S159W.

.FRONT 25S179W 24S177W MOVING E 10 KT. ISOLATED MODERATE TSTMS
WITHIN 120 NM OF FRONT.
.24 HOUR FORECAST FRONT 25S169W 22S178W. WINDS 20 TO 25 KT WITHIN
90 NM OF FRONT.
.48 HOUR FORECAST 25S162W 22S169W. WINDS 20 TO 30 KT WITHIN 120 NM
OF FRONT.

.LOW NEAR 20S172E 1005 MB NEARLY STATIONARY. TROUGH FROM 22S175E
TO TROUGH TO 13S165E. ISOLATED MODERATE TSTMS WITHIN 240 NM E OF
TROUGH AND WITHIN 90 NM W OF TROUGH.
.24 HOUR FORECAST LOW DISSIPATED. TROUGH MERGES WITH TROUGH AND
LOW DESCRIBED BELOW.

.LOW W OF AREA MOVING SE 10 KT. TROUGH 21S163E 21S160E. ISOLATED
MODERATE TSTMS S OF 12S W OF 163E.
.24 HOUR FORECAST LOW NEAR 24S161E 999MB. TROUGH FROM 21S178E TO
22S169E TO LOW TO 20S160E. WINDS 20 TO 30 KT S OF 16S W OF 167E.
.48 HOUR FORECAST LOW MOVED S OF AREA. TROUGH 24S174E 25S168E
15S160E. WINDS 20 TO 25 KT S OF 13S W OF 170E.

.24 HOUR FORECAST WINDS 20 TO 25 KT N OF 06S BETWEEN 175E AND 153W.
.48 HOUR FORECAST WINDS 20 TO 25 KT N OF 06N BETWEEN 175E AND 146W.

.OTHERWISE...WINDS 20 KT OR LESS OVER REMAINDER OF FORECAST AREA.

.24 HOUR FORECAST SEAS 8 TO 10 FT N OF 07S BETWEEN 176E AND 125W.
SEAS 8 TO 9 FT FROM 19S TO 15S W OF 162E.
.48 HOUR FORECAST SEAS 8 TO 9 FT N OF 13S E OF 174E...AND FROM 19S
TO 15S BETWEEN 163E AND 167E.

.OTHERWISE...SEAS 8 FT OR LOWER OVER REMAINDER OF FORECAST AREA.

.ISOLATED MODERATE TSTMS FROM 10S TO 02S W OF 176E.

$$

.FORECASTER TROTTER. HONOLULU HI.
The High Seas Forecast for the South Pacific

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