####018002017####
FZPN40 PHFO 300321

HSFNP 



HIGH SEAS FORECAST

NATIONAL WEATHER SERVICE HONOLULU HI

0500 UTC TUE APR 30 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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



NORTH PACIFIC EQUATOR TO 30N BETWEEN 140W AND 160E



SYNOPSIS VALID 0000 UTC APR 30 2024.

24 HOUR FORECAST VALID 0000 UTC MAY 01 2024.

48 HOUR FORECAST VALID 0000 UTC MAY 02 2024.



.WARNINGS.



.NONE.   



.SYNOPSIS AND FORECAST.



.WEAK FRONT 30N161W 26N164W 24N166W MOVING E SLOWLY. SCATTERED 

MODERATE TSTMS WITHIN 210 NM E OF FRONT. 

.24 HOUR FORECAST FRONT WEAKENED TO TROUGH 30N160W 20N166W.  

.48 HOUR FORECAST TROUGH 30N161W 20N167W.



.WEAK FRONT 30N169E 28N163E 28N160E MOVING NE 20 KT. 

.24 HOUR FORECAST FRONT DISSIPATED N OF AREA. 



.TROUGH 23N179W 18N180E MOVING W SLOWLY.

.24 HOUR FORECAST TROUGH 22N180E 18N179E.

.48 HOUR FORECAST TROUGH DISSIPATED.



.TROUGH 26N166E 21N167E 17N166E MOVING W SLOWLY. ISOLATED 

MODERATE TSTMS WITHIN 180 NM E OF TROUGH.

.24 HOUR FORECAST TROUGH DISSIPATED.



.NE TO E WINDS 20 TO 25 KT E OF LINE 27N145W 12N156W 06N150W.   

.24 HOUR FORECAST NE TO E WINDS 20 TO 25 KT E OF LINE 22N145W

08N162W...AND FROM 11N TO 06N W OF 175E.

.48 HOUR FORECAST NE TO E WINDS 20 TO 25 KT E OF LINE 25N145W

07N160W...AND FROM 16N TO 07N E OF 164W. 



.WINDS 20 KT OR LESS OVER REMAINDER OF AREA.



.SEAS 8 TO 9 FT FROM 12N TO 05N E OF 160W. 

.24 HOUR FORECAST SEAS LOWERED TO 8 FT OR LOWER. 



.SEAS 8 FT OR LOWER OVER REMAINDER OF AREA.



.ITCZ 05N140W 04N152W 01N160W 05N174W 02N173E. ISOLATED MODERATE 

TSTMS WITHIN 120 NM OF ITCZ E OF 144W...AND WITHIN 210 NM OF ITCZ

BETWEEN 157W AND 175W. 



$$



.FORECASTER AHUE. HONOLULU HI.

####018002055####
FZPS40 PHFO 300321

HSFSP 



HIGH SEAS FORECAST

NATIONAL WEATHER SERVICE HONOLULU HI

0530 UTC TUE APR 30 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 0000 UTC APR 30 2024.

24 HOUR FORECAST VALID 0000 UTC MAY 01 2024.

48 HOUR FORECAST VALID 0000 UTC MAY 02 2024.



.WARNINGS.



.NONE. 



.SYNOPSIS AND FORECAST.



.TROUGH 09S148W 09S159W 11S171W 07N176E 06N166E 07S160E NEARLY 

STATIONARY. NUMEROUS MODERATE TSTMS WITHIN 300 NM OF TROUGH E OF 

164W. SCATTERED MODERATE TSTMS ELSEWHERE WITHIN 300 NM OF TROUGH. 

.24 HOUR FORECAST TROUGH 09S160W 10S171W 06S160E. 

.48 HOUR FORECAST TROUGH 10S166W 09S177W 05S160E. 



.TROUGH 25S133W 19S136W NEARLY STATIONARY.

.24 HOUR FORECAST TROUGH 25S132W 19S136W.

.48 HOUR FORECAST TROUGH 25S130W 20S132W. 



.TROUGH 25S177W 19S179E MOVING E 10 KT. 

.24 HOUR FORECAST TROUGH 25S171W 20S176W.

.48 HOUR FORECAST TROUGH 25S172W 20S177W.



.WINDS E TO SE 20 TO 25 KT S OF 15S BETWEEN 148W AND 160W...AND

S OF 14S W OF 169E. 

.24 HOUR FORECAST E TO SE WINDS 20 TO 25 KT S OF 15S BETWEEN 150W

164W...AND FROM 15S TO 20S W OF 169E.

.48 HOUR FORECAST E TO SE WINDS 20 TO 25 KT S OF LINE 25S132W 

11S149W 10S169W...AND W OF LINE 11S169E 20S172E.



.WINDS 20 KT OR LESS OVER REMAINDER OF AREA.



.SEAS MAINLY 8 TO 9 FT FROM 11S TO 20S BETWEEN 153W AND 169W.

.24 HOUR FORECAST SEAS MAINLY 8 TO 9 FT FROM 15S TO 20S BETWEEN 

155W AND 164W.

.48 HOUR FORECAST SEAS MAINLY 8 TO 12 FT S OF LINE 25S131W 12S160W

14S169W 25S162W.



.SEAS 8 FT OR LOWER OVER REMAINDER OF AREA.



.ISOLATED MODERATE TSTMS FROM 12S TO 17S W OF 174E. 



$$



.FORECASTER AHUE. HONOLULU HI.