High Seas Forecast
Issued by NWS

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000
FZPS40 PHFO 120928
HSFSP

HIGH SEAS FORECAST
NATIONAL WEATHER SERVICE HONOLULU HI
1130 UTC TUE MAR 12 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 0600 UTC MAR 12 2024.
24 HOUR FORECAST VALID 0600 UTC MAR 13 2024.
48 HOUR FORECAST VALID 0600 UTC MAR 14 2024.

.WARNINGS.

...GALE WARNING...
.FIRST LOW NEAR 20S171E 1003 MB MOVING SE SLOWLY. SECOND LOW NEAR
21S173W 1006 MB MOVING E 10 KT. TROUGH FROM 19S151W TO 21S165W TO
SECOND LOW TO 22S178E TO FIRST LOW TO 18S160E NEARLY STATIONARY.
E TO SE WINDS 30 TO 35 KT S OF TROUGH W OF 175E. E TO SE WINDS 20
TO 25 KT S OF TROUGH BETWEEN 170W AND 175E... AND WITHIN 120 NM S
OF TROUGH BETWEEN 160W AND 151W. NW WINDS 20 TO 25 KT WITHIN 180
NM N SEMICIRCLES OF LOWS. NUMEROUS STRONG TSTMS FROM 22S TO 16S
BETWEEN 168E AND 174E. ISOLATED MODERATE TSTMS ELSEWHERE WITHIN
150 NM OF TROUGH... AND FROM TROUGH TO 15S W OF 168E.
.24 HOUR FORECAST FIRST LOW NEAR 21S173E 1004 MB. SECOND LOW NEAR
22S163W 1003 MB. TROUGH FROM 21S150W TO SECOND LOW TO 19S176W TO
FIRST LOW TO 17S160E. E TO SE WINDS 20 TO 30 KT S OF TROUGH W OF
180E. WINDS 20 TO 30 KT S OF TROUGH E OF 165W. NW WINDS 20 TO 25
KT WITHIN 150 NM OF A LINE FROM 21S175E TO 13S160E.
.48 HOUR FORECAST FIRST LOW NEAR 21S173E 1005 MB. SECOND LOW NEAR
24S157W 1005 MB. TROUGH FROM 25S156W TO SECOND LOW TO 18S170W TO
FIRST LOW TO 17S165E TO 21S160E. E TO SE WINDS 20 TO 25 KT S OF
TROUGH BETWEEN 170E AND 180W...AND WITHIN 180 NM OF SECOND LOW. NW
WINDS 20 TO 25 KT WITHIN 210 NM N OF TROUGH W OF 180W.

.SYNOPSIS AND FORECAST.

.TROUGH FROM 25S128W TO 20S143W MOVING S SLOWLY. ISOLATED MODERATE
TSTMS WITHIN 180 NM N OF TROUGH.
.24 HOUR FORECAST TROUGH FROM 25S133W TO 22S142W.
.48 HOUR FORECAST TROUGH MERGED WITH NEW FRONT FROM 23S120W TO
22S126W TO 25S131W.

.TROUGH FROM 02S128W TO 08S125W MOVING W SLOWLY. ISOLATED MODERATE
TSTMS FROM 07S TO 02S BETWEEN 135W AND TROUGH.
.24 HOUR FORECAST TROUGH FROM 04S135W TO 08S133W.
.48 HOUR FORECAST TROUGH DISSIPATED.

.WINDS 20 KT OR LESS REMAINDER FORECAST AREA.

.SEAS 12 TO 15 FT S OF 19S W OF 175E. SEAS 8 TO 12 FT ELSEWHERE S
OF A LINE FROM 25S165W TO 20S170W TO 15S170E TO 18S160E.
.24 HOUR FORECAST SEAS 8 TO 10 FT S OF 20S W OF 180W... AND S OF A
LINE FROM 23S148W TO 17S167W.
.48 HOUR FORECAST SEAS 8 TO 9 FT S OF 23S BETWEEN 162W AND 148W.

.SEAS 8 FT OR LOWER REMAINDER FORECAST AREA.

.ISOLATED MODERATE TSTMS WITHIN 60 NM OF A LINE FROM 14S150W TO
07S164W... AND FROM 15S TO 12S BETWEEN 174W AND 170W.

$$

.FORECASTER SHIGESATO. HONOLULU HI.


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