####018001963####
FZPN40 PHFO 220254

HSFNP 



HIGH SEAS FORECAST

NATIONAL WEATHER SERVICE HONOLULU HI

0500 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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



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



SYNOPSIS VALID 0000 UTC APR 22 2024.

24 HOUR FORECAST VALID 0000 UTC APR 23 2024.

48 HOUR FORECAST VALID 0000 UTC APR 24 2024.



.WARNINGS.



.NONE.   



.SYNOPSIS AND FORECAST.



.FRONT FROM 30N172E TO 27N170E TO 25N167E MOVING E 15 KT.

.24 HOUR FORECAST FRONT FROM 30N179E TO 27N174E.

.48 HOUR FORECAST FRONT WEAKENED TO A TROUGH FROM 30N178W TO 

26N175E.



.TROUGH FROM 27N140W TO 25N146W TO 18N152W NEARLY STATIONARY.

.24 HOUR FORECAST TROUGH FROM 26N140W TO 25N143W.

.48 HOUR FORECAST TROUGH DISSIPATED.



.NE TO E WINDS 20 TO 25 KT FROM 05N TO 18N BETWEEN 180E AND

150W...AND FROM 05N TO 10N BETWEEN 165E AND 180E.

.24 HOUR FORECAST WINDS 20 TO 25 KT FROM 05N TO 15N BETWEEN

170E AND 145W. 

.48 HOUR FORECAST WINDS 20 TO 25 KT FROM 05N TO 15N W OF

160W...AND FROM 05N TO 25N BETWEEN 160W AND 145W.



.SEAS 8 TO 12 FT N OF 28N W OF 165E. SEAS 8 TO 10 FT FROM 

05N TO 12N BETWEEN 180W AND 158W. 

.24 HOUR FORECAST SEAS 8 TO 12 FT N OF 25N BETWEEN 175E AND

165E...AND FROM 05N TO 15N BETWEEN 180W AND 160W. 

.48 HOUR FORECAST SEAS 8 TO 10 FT FROM 05N TO 15N BETWEEN 

175E AND 150W. 



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

AREA.



.ITCZ 00N168W 03N158W 05N153W 05N140W. SCATTERED MODERATE TO 

LOCALLY STRONG TSTMS WITHIN 300 NM OF ITCZ E OF 160W...AND 

WITHIN 300 NM OF POINT 04N172E.  







$$



.FORECASTER PECHACEK. HONOLULU HI.

####018002778####
FZPS40 PHFO 220254

HSFSP 



HIGH SEAS FORECAST

NATIONAL WEATHER SERVICE HONOLULU HI

0530 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 0000 UTC APR 22 2024.

24 HOUR FORECAST VALID 0000 UTC APR 23 2024.

48 HOUR FORECAST VALID 0000 UTC APR 24 2024.



.WARNINGS.



...GALE WARNING...

.LOW NEAR 20S162E 1007 MB MOVING ESE 20KT. SECOND LOW 23S174E

MOVING ESE 20 KT. TROUGH 19S160E TO FIRST LOW TO SECOND LOW. 

WINDS 30 TO 35 KT S OF FIRST LOW W OF 165E. WINDS 20 TO 30 KT

ELSEWHERE AND SEAS 8 TO 12 FT S OF LOWS AND TROUGH. SCATTERED

STRONG TSTMS WITHIN 300 NM OF SECOND LOW N SEMICIRCLE. 

.24 HOUR FORECAST LOW 20S161E 1009 MB. SECOND LOW NEAR 23S178E

1008 MB. TROUGH 19S160E TO FIRST LOW TO 19S169E TO SECOND LOW 

TO 25S178W. WINDS 20 TO 25 KT AND SEAS 8 TO 12 FT S OF LOWS 

AND TROUGH.  

.48 HOUR FORECAST LOW NEAR 22S166E 1009 MB. SECOND LOW NEAR 

21S170W 1007 MB. TROUGH 16S160E TO LOW TO 25S175W TO SECOND

LOW. WINDS 20 TO 30 KT AND SEAS 8 TO 12 FT S OF LOWS AND 

TROUGH.



.SYNOPSIS AND FORECAST.



.TROUGH 01S172E 06S170E 12S172E MOVING S SLOWLY. SCATTERED 

MODERATE TSTMS N OF 08S BETWEEN 160E AND 175W.

.24 HOUR FORECAST TROUGH 06S166E 13S177W. 

.48 HOUR FORECAST TROUGH DISSIPATED.



.LOW 18S150W 1009 MB MOVING S SLOWLY. TROUGH 11S157W TO LOW

TO 21S146W 25S146W MOVING SLOWLY. NUMEROUS STRONG TSTMS 

WITHIN 300 NM OF POINT 15S145W. ISOLATED MODERATE TSTMS 

WITHIN 150 NM OF POINT 22S143W. 

.24 HOUR FORECAST TROUGH 13S152W 25S147W. 

.48 HOUR FORECAST TROUGH 13S159W 20S153W 25S154W. 



.TROUGH 12S121W 16S120W MOVING W 10 KT. 

.24 HOUR FORECAST TROUGH 12S125W 18S124W.

.48 HOUR FORECAST TROUGH 14S133W 21S127W. 



.WINDS 20 TO 30 KT S OF LINE 25S145W 15S135W 20S120W. 

.24 HOUR FORECAST WINDS 20 TO 25 KT S OF 20S E OF 145W. 

.48 HOUR FORECAST WINDS 20 TO 25 KT S OF 22S E OF 135W. 



.SEAS 12 TO 14 FT S OF 22S E OF 125W. SEAS 8 TO 12 FT ELSEWHERE

S OF LINE 25S150W 15S135W 18S120W. 

.24 HOUR FORECAST SEAS 12 TO 16 FT S OF 20S E OF 130W. SEAS 8 

TO 12 FT ELSEWHERE S OF LINE 25S148W 14S135W 18S120W. 

.48 HOUR FORECAST SEAS 8 TO 12 FT S OF LINE 25S140W 15S130W

20S120W. 



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

AREA.



.SCATTERED MODERATE TSTMS FROM 18S TO 08S BETWEEN 170W AND 

162E.







$$



.FORECASTER PECHACEK. HONOLULU HI.