####018001677####
FZPN40 PHFO 302207

HSFNP 



HIGH SEAS FORECAST

NATIONAL WEATHER SERVICE HONOLULU HI

2300 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 1800 UTC APR 30 2024.

24 HOUR FORECAST VALID 1800 UTC MAY 01 2024.

48 HOUR FORECAST VALID 1800 UTC MAY 02 2024.



.WARNINGS.



.NONE.   



.SYNOPSIS AND FORECAST.



.WEAK TROUGH 30N162W 28N162W 20N166W NEARLY STATIONARY.

.24 HOUR FORECAST TROUGH 30N162W 26N161W 21N167W.  

.48 HOUR FORECAST TROUGH 30N160W 27N164W 23N168W.



.WEAK TROUGH 28N177E 22N180W 18N180W MOVING SLOWLY WEST.

.24 HOUR FORECAST TROUGH DISSIPATED. 



.WEAK TROUGH 26N164E 21N163E 16N160E. MOVING W AT 10 KT. 

.24 HOUR FORECAST TROUGH 25N161E 22N160E.

.48 HOUR FORECAST TROUGH MOVED W OF FORECAST AREA. 



.NE TO E WINDS 20 TO 25 KT FROM 05N TO 11N BETWEEN 177E AND 167E.

.24 HOUR FORECAST NE TO E WINDS 20 TO 25 KT E OF LINE 05N160W 

18N160W 25N140W. 

.48 HOUR FORECAST NE TO E WINDS 20 TO 25 KT FROM 07N TO 19N E OF 

164W.



.WINDS 20 KT OR LESS OVER REMAINDER OF AREA.



.SEAS 8 FT OR LOWER OVER REMAINDER OF AREA.



.ITCZ 06N140W 05N155W 02N163W 02N170E 01N160E. SCATTERED MODERATE

TO LOCALLY STRONG TSTMS WITHIN 90 NM OF ITCZ BETWEEN 143W AND 

167W. 







$$



.FORECASTER TSAMOUS. HONOLULU HI.

####018002418####
FZPS40 PHFO 302208

HSFSP 



HIGH SEAS FORECAST

NATIONAL WEATHER SERVICE HONOLULU HI

2330 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 1800 UTC APR 30 2024.

24 HOUR FORECAST VALID 1800 UTC MAY 01 2024.

48 HOUR FORECAST VALID 1800 UTC MAY 02 2024.



.WARNINGS.



.NONE. 



.SYNOPSIS AND FORECAST.



.TROUGH 06S160E 07S170E 10S170W 10S154W NEARLY STATIONARY. 

SCATTERED MODERATE TSTMS WITHIN 270 NM OF TROUGH.

.24 HOUR FORECAST TROUGH 06S160E 08S180E 08S167W. 

.48 HOUR FORECAST TROUGH 02S160E 10S178E 12S171W.  



.TROUGH 25S172W 18S176E 12S160E NEARLY STATIONARY. ISOLATED 

MODERATE TSTMS WITHIN 270 NM N OF TROUGH W OF 172E. 

.24 HOUR FORECAST TROUGH 25S172W 18S179W 13S164E.

.48 HOUR FORECAST TROUGH 25S173W 18S178E 14S165E. 



.TROUGH 22S173W 17S175W 14S176W MOVING S SLOWLY. SCATTERED MODERATE

TSTMS WITHIN 390 NM E OF TROUGH FROM 18S TO 11S.

.24 HOUR FORECAST TROUGH ABSORBED BY TROUGH ABOVE.



.TROUGH 25S134W 20S140W MOVING E 10 KT. 

.24 HOUR FORECAST TROUGH 25S131W 19S135W.

.48 HOUR FORECAST TROUGH 25S127W 19S132W.



.SE TO E WINDS 20 TO 25 KT FROM 19S TO 12S W OF 173E...AND WITHIN 

AN AREA BOUNDED BY 17S144W 25S158W 25S162W 16S163W 13S150W 17S144W.

.24 HOUR FORECAST SE TO E WINDS 20 TO 25 KT FROM 18S TO 12S W OF

170E...AND WITHIN AN AREA BOUNDED BY 25S133W 12S151W 13S166W

20S166W 25S153W 25S133W. 

.48 HOUR FORECAST SE TO E WINDS 20 TO 25 KT S OF LINE 25S176W 

17S175E 10S160E...AND WITHIN AN AREA BOUNDED BY 25S130W 10S150W

15S170W 25S160W 25S130W.



.WINDS 20 KT OR LESS OVER REMAINDER OF AREA.



.SEAS 8 TO 9 FT FROM 20S TO 16S BETWEEN 161W AND 156W.

.24 HOUR FORECAST SEAS 8 TO 9 FT FROM 18S TO 14S BETWEEN

160W AND 167W. SEAS 8 TO 11 FT S OF A LINE 25S136W 20S144W 21S154W

25S160W.

.48 HOUR FORECAST SEAS 12 TO 13 FT S OF 21S BETWEEN 146W AND

131W. SEAS 8 TO 12 FT ELSEWHERE S OF LINE 24S120W 12S151W 13S168W.



.SEAS 8 FT OR LOWER OVER REMAINDER OF AREA.







$$



.FORECASTER TSAMOUS. HONOLULU HI.