High Seas Forecast
Issued by NWS

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FZPS40 PHFO 212322
HSFSP

HIGH SEAS FORECAST
NATIONAL WEATHER SERVICE HONOLULU HI
2330 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 1800 UTC MAR 21 2024.
24 HOUR FORECAST VALID 1800 UTC MAR 22 2024.
48 HOUR FORECAST VALID 1800 UTC MAR 23 2024.

.WARNINGS.

.NONE.

.SYNOPSIS AND FORECAST.

.LOW 18S166E 1008 MB. SECOND LOW 20S176W 1007 MB. TROUGH FROM
15S160E TO FIRST LOW TO 18S174E TO SECOND LOW TO 19S172W. LOWS AND
TROUGHS NEARLY STATIONARY. SE WINDS 20 TO 25 KT S OF LOWS AND TROUGH.
SCATTERED MODERATE TO STRONG TSTMS WITHIN 270 NM OF BOTH LOWS. ISOLATED
MODERATE TSTMS WITHIN 300 NM ELSEWHERE EITHER SIDE OF TROUGH.
.24 HOUR FORECAST FIRST LOW DISSIPATED. LOW 19S178W 1010 MB. TROUGH
16S160E 17S174E TO LOW TO 23S170W. SE WINDS 20 TO 25 KT S OF TROUGH
W OF 168E.
.48 HOUR FORECAST LOW 19S178W 1010 MB. TROUGH 15S160E 16S165W
15S178E TO LOW TO 22S170W. SE WINDS 20 TO 25 KT WITHIN 90 NM
S OF LOW.

.LOW 24S139W 1012 MB. TROUGH 25S139W TO LOW TO 20S142W. LOW AND
TROUGH NEARLY STATIONARY. MODERATE ISOLATED TSTMS WITHIN 210 NM
N OF LOW AND TROUGH.
.24 HOUR FORECAST LOW DISSIPATED. TROUGH 25S139W 17S144W 14S155W.
.48 HOUR FORECAST TROUGH 19S143W 15S153W 14S162W.

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

.SEAS 8 TO 10 FT S OF 19S BETWEEN 165W AND 167E.
.24 HOUR FORECAST SEAS 8 TO 9 FT S OF 20S BETWEEN 172W AND 175E.
.48 HOUR FORECAST SEAS LOWERED TO 8 FT OR LESS.

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

.SCATTERED MODERATE TSTMS FROM 15S TO 06S BETWEEN 130W AND
138W.


$$

.FORECASTER THOMAS. HONOLULU HI.


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