####018003727####
FZPS40 PHFO 221019

HSFSP 



HIGH SEAS FORECAST

NATIONAL WEATHER SERVICE HONOLULU HI

1130 UTC MON APR 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 0600 UTC APR 22 2024.

24 HOUR FORECAST VALID 0600 UTC APR 23 2024.

48 HOUR FORECAST VALID 0600 UTC APR 24 2024.



.WARNINGS.



...GALE WARNING...

.LOW NEAR 20S162E 1006 MB NEARLY STATIONARY. TROUGH 18S160E TO LOW

TO 20S167E 23S179E 22S174W NEARLY STATIONARY. WINDS 20 TO 30 KT S

OF LINE 20S160E 21S170E 21S176E 25S177E. ISOLATED TO SCATTERED

MODERATE TSTMS WITHIN 300 NM N OF TROUGH.

.18 HOUR FORECAST LOW NEAR 20S163W 1010 MB. SECOND LOW NEAR 

24S179W 1009 MB. TROUGH 17S160E TO FIRST LOW TO 20S167E 19S176E 

TO SECOND LOW TO 25S176W. SE WINDS 30 TO 35 KT IN AREA BOUNDED BY

21S160E 21S161E 23S167E 24S167E 24S163E 21S160E. WINDS 20 TO 30 

KT ELSEWHERE S OF LINE 19S160E 21S169E 21S176W 25S174W.

.24 HOUR FORECAST LOW NEAR 19S163E 1008 MB. SECOND LOW NEAR 

23S178W 1009 MB. TROUGH 17S160E TO FIRST LOW TO 21S167E 19S173E TO

SECOND LOW TO 25S174W. WINDS 30 TO 35 KT IN AREA BOUNDED BY 

21S160E 20N161E 22S164E 22S169E 24S169E 24S164E 21S160E. WINDS 20 

TO 30 KT ELSEWHERE S OF LINE 18S160E 22S165E 21S170E 21S175W 

25S173W.

.48 HOUR FORECAST LOW NEAR 24S168E 1007 MB. SECOND LOW NEAR 

21S176W 1010 MB. TROUGH 15S160E TO FIRST LOW TO 25S172W 19S179E 

TO SECOND LOW 25S160W. WINDS 20 TO 30 KT S OF 21S BETWEEN 163E AND

170W.



.SYNOPSIS AND FORECAST.



.LOW NEAR 17S151W 1010 MB MOVING W SLOWLY. TROUGH 08S158W TO LOW 

TO 17S144W 20S143W 25S145W NEARLY STATIONARY. SCATTERED MODERATE

TSTMS WITHIN 300 NM E AND NE OF TROUGH.

.24 HOUR FORECAST LOW DISSIPATED. TROUGH 11S167W 13S157W 20S148W

25S143W.

.48 HOUR FORECAST TROUGH 11S168W 13S160W 20S150W 25S147W.



.TROUGH 03S167E 07S168E 11S171E MOVING W SLOWLY. ISOLATED TO 

SCATTERED MODERATE TSTMS N OF 10S W OF 170E.

.24 HOUR FORECAST TROUGH DISSIPATED. 



.TROUGH 10S178W 15S176W NEARLY STATIONARY. SCATTERED MODERATE

TSTMS WITHIN 300 NM OF TROUGH.

.24 HOUR FORECAST TROUGH 09S179W 18S177W.

.48 HOUR FORECAST TROUGH DISSIPATED.



.TROUGH 19S125W 21S120W MOVING W 10 KT. ISOLATED MODERATE TSTMS S

OF 21S E OF 123W.

.24 HOUR FORECAST TROUGH 15S128W 20S125W.

.48 HOUR FORECAST TROUGH 15S135W 22S130W.



.TROUGH 14S123W 16S120W MOVING W 10 KT.

.24 HOUR FORECAST TROUGH MERGED WITH TROUGH MENTIONED DIRECTLY 

ABOVE. 



.WINDS 20 TO 30 KT S OF LINE 25S145W 20S144W 14S130W 21S120W.

.24 HOUR FORECAST E TO SE WINDS 20 TO 30 KT S OF LINE 25S137W 

19S134W 19S127W 22S120W.

.48 HOUR FORECAST E WINDS 20 TO 25 KT S OF 23S E OF 133W. 



.SEAS 12 TO 17 FT S OF 20S E OF 130W. SEAS 8 TO 12 FT ELSEWHERE S

OF LINE 25S155W 11S135W 16S120W...AND S OF LINE 19S160E 22S167E

22S176E 25S176E.

.24 HOUR FORECAST SEAS 12 TO 16 FT S OF LINE 25S134W 19S130W

19S127W 23S120W. SEAS 8 TO 12 FT ELSEWHERE S OF LINE 25S150W

10S135W 16S120W...AND S OF LINE 19S160E 22S167E 20S170E 22S175W

25S175W.

.48 HOUR FORECAST SEAS 8 TO 11 FT S OF LINE 24S160E 20S172E

20S177W 25S166W...AND S OF LINE 25S145W 14S135W 20S120W.



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

AREA.



.ISOLATED MODERATE TSTMS ELSEWHERE N OF 10S W OF 135W...AND FROM 

10S TO 14S BETWEEN 160W AND 170W.



$$



.FORECASTER JELSEMA. HONOLULU HI.