High Seas Forecast
Issued by NWS

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FZPS40 PHFO 211445
HSFSP

HIGH SEAS FORECAST
NATIONAL WEATHER SERVICE HONOLULU HI
1730 UTC THU MAR 21 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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.

PLEASE SEE HTTPS://OCEAN.WEATHER.GOV/PROPOSED_HIGH_SEAS_TROPICAL.PHP
FOR A PROPOSAL...AND A REQUEST FOR COMMENTS...TO INCREASE
READABILITY OF THE HIGH SEAS FORECAST (WEB ADDRESS LOWERCASE).

SECURITE

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

SYNOPSIS VALID 1200 UTC MAR 21 2024.
24 HOUR FORECAST VALID 1200 UTC MAR 22 2024.
48 HOUR FORECAST VALID 1200 UTC MAR 23 2024.

.WARNINGS.

.NONE.

.SYNOPSIS AND FORECAST.

.LOW 17S166E 1009 MB. SECOND LOW 19S178W 1007 MB. TROUGH
15S160E TO FIRST LOW TO SECOND LOW TO 21S169W 25S158W. TROUGH AND
SECOND LOW MOVING S SLOWLY E OF 180W AND FIRST LOW AND TROUGH
NEARLY STATIONARY ELSEWHERE. SCATTERED MODERATE TO LOCALLY STRONG
TSTMS WITHIN 360 NM N OF TROUGH AND LOW W OF 180W. ISOLATED
MODERATE TSTMS WITHIN 180 NM S OF TROUGH AND LOW E OF 180W. E TO
SE WINDS 20 TO 30 KT S OF LOWS AND AND TROUGH W OF 175W.
.24 HOUR FORECAST FIRST LOW 18S164E 1009 MB. SECOND LOW 18S179E
1007 MB. TROUGH 14S160E TO FIRST LOW TO SECOND LOW TO 21S169W
25S160W. WINDS 20 TO 25 KT S OF LOWS AND TROUGH W OF 170W.
.48 HOUR FORECAST FIRST LOW 18S175W 1010 MB. SECOND LOW 23S169W
1009 MB. TROUGH 25S160W TO SECOND LOW TO 18S176W TO FIRST LOW TO
16S160E. WINDS 20 TO 25 KT WITHIN 150 NM OF BOTH LOWS.

.TROUGH 14S147W 20S132W 25S130W MOVING SLOWLY W. ISOLATED MODERATE
TSTMS WITHIN 210 NM OF TROUGH S OF 15S.
.24 HOUR FORECAST TROUGH 14S150W 20S135W 25S131W.
.48 HOUR FORECAST TROUGH DISSIPATED.

.TROUGH 04S172W 11S174W MOVING W 10 KT.
.24 HOUR FORECAST TROUGH 05S177W 11S177W.
.48 HOUR FORECAST TROUGH DISSIPATED.

.OTHERWISE...WINDS 20 KT OR BELOW OVER REMINDER OF FORECAST AREA.

.SEAS 8 TO 10 FT S OF 18S W OF 170W.
.24 HOUR FORECAST SEAS 8 TO 10 FT S OF 20S W OF 160W.
.48 HOUR FORECAST SEAS 8 TO 10 FT S OF 18S W OF 170W.

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

.SCATTERED MODERATE TSTMS FROM 15S TO 05S BETWEEN 125W AND
145W...AND WITHIN 90 NM OF POINT 09S170W.



$$

.FORECASTER PECHACEK. HONOLULU HI.


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