####018003408####
FZPS40 PHFO 231020

HSFSP 



HIGH SEAS FORECAST

NATIONAL WEATHER SERVICE HONOLULU HI

1130 UTC TUE APR 23 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 APR 23 2024.

24 HOUR FORECAST VALID 0600 UTC APR 24 2024.

48 HOUR FORECAST VALID 0600 UTC APR 25 2024.



.WARNINGS.



...GALE WARNING...

.LOW NEAR 19S163E 1008 MB MOVING SE SLOWLY. SECOND LOW NEAR 

24S175W 1010 MB NEARLY STATIONARY. TROUGH 17S160E TO FIRST LOW

TO 20S170E 19S172E TO SECOND LOW TO 25S174W NEARLY STATIONARY. 

SE WINDS 20 TO 30 KT S OF TROUGH. SCATTERED MODERATE TSTMS WITHIN

210 NM N SEMICIRCLE OF SECOND LOW.

.24 HOUR FORECAST LOW NEAR 22S168E 1008 MB. SECOND LOW 

DISSIPATED. TROUGH 14S160E TO LOW TO 24S171E 20S180W 23S173W 

25S159W. WINDS 20 TO 30 KT S OF 22S BETWEEN 163E AND 170W. 

.30 HOUR FORECAST LOW NEAR 25S173E 1007 MB. SECOND LOW 

DISSIPATED. TROUGH 14S160E TO LOW TO 23S170W 25S158W. WINDS 30 TO 

35 KT WITHIN 90 NM OF LOW. WINDS 20 TO 30 KT ELSEWHERE S OF 22S 

BETWEEN 169E AND 171W. 

.48 HOUR FORECAST LOW MOVED S OF FORECAST AREA. TROUGH 18S170E 

25S179E. SECOND TROUGH 25S179W 22S170W 22S160W 25S152W. WINDS 20 

TO 30 KT S OF SECOND TROUGH W OF 160W. 



.SYNOPSIS AND FORECAST.



.TROUGH 05S175E 11S178E 17S179E NEARLY STATIONARY. SCATTERED

MODERATE TSTMS WITHIN 180 NM OF TROUGH.

.24 HOUR FORECAST TROUGH DISSIPATED.



.TROUGH 05S120W 04S125W 06S134W 05S140W 06S149W 02S163W 01S172W 

NEARLY STATIONARY. SCATTERED MODERATE TSTMS FROM 03S TO 08S E OF

129W...AND FROM 02S TO 07S BETWEEN 152W AND 138W. ISOLATED

MODERATE TSTMS ELSEWHERE WITHIN 120NM OF TROUGH W OF 152W AND

BETWEEN 138W AND 129W. 

.24 HOUR FORECAST TROUGH DISSIPATED.



.TROUGH 08S153W 11S151W 17S151W 23S145W 25S144W NEARLY 

STATIONARY. SCATTERED MODERATE TSTMS WITHIN 120 NM E OF TROUGH S 

OF 23S.

.24 HOUR FORECAST TROUGH 25S145W 18S153W 09S162W 07S170W.

.48 HOUR FORECAST TROUGH 25S146W 17S152W 09S170W.



.TROUGH 15S129W 21S123W MOVING W 10 KT. 

.24 HOUR FORECAST TROUGH DISSIPATED.



.WINDS 20 TO 30 KT S OF LINE 25S144W 19S134W 19S127W 21S120W.  

.24 HOUR FORECAST E WINDS 20 TO 25 KT S OF 22S E OF 134W.

.48 HOUR FORECAST WINDS DIMINISHED TO 20 KT OR LESS.



.SEAS 12 TO 15 FT S OF LINE 25S135W 20S130W 21S120W. SEAS 12 TO 14

FT W OF LINE 20S160E 23S169E 24S169E 23S160E. SEAS 8 TO 12 FT

ELSEWHERE S OF LINE 18S160E 22S167E 21S171E 23S176W 25S177W...AND

S OF LINE 25S153W 10S135W 15S120W.

.24 HOUR FORECAST SEAS 12 TO 13 FT S OF 23S BETWEEN 165E AND 

173E. SEAS 8 TO 12 FT ELSEWHERE 19S160E 22S167E 21S172E 22S175W 

25S170W...AND 25S145W 15S135W 20S120W.

.48 HOUR FORECAST SEAS 8 TO 12 FT S OF LINE 25S166E 21S173E

20S165W 25S151W. SEAS 8 TO 9 FT FROM 07S TO 10S E OF 122W.



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

AREA.



.ISOLATED MODERATE TSTMS ELSEWHERE S OF 11S W OF 170W...FROM 11S 

TO 20S BETWEEN 177W AND 170W...AND FROM 10S TO 17S BETWEEN 141W

AND 137W.



$$



.FORECASTER JELSEMA. HONOLULU HI.