FZPS40 PHFO 091530

HSFSP 



HIGH SEAS FORECAST

NATIONAL WEATHER SERVICE HONOLULU HI

1730 UTC FRI MAY 09 2025



SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 1200 UTC MAY 09 2025.

24 HOUR FORECAST VALID 1200 UTC MAY 10 2025.

48 HOUR FORECAST VALID 1200 UTC MAY 11 2025.



.WARNINGS.



...GALE WARNING...

.TROUGH 25S149W 20S151W 13S162W 13S169W 17S173E NEARLY 

STATIONARY. WINDS 20 TO 25 KT S OF 13S BETWEEN 162W AND 170E. 

SCATTERED MODERATE TSTMS WITHIN 300 NM OF TROUGH S OF 15S...AND S

OF 02S BETWEEN 165W AND 170E.

.24 HOUR FORECAST NEW LOW NEAR 16S173E 1004 MB. 25S151W 15S157W 

15S171W TO LOW TO 11S160E. WINDS 20 TO 30 KT S OF 21S BETWEEN 174E

AND 170E. WINDS 20 TO 25 KT S OF 16S BETWEEN 169W AND 173E.

.48 HOUR FORECAST NEW LOW 19S174W 1001 MB. SECOND LOW NEAR 

16S176E 1004 MB. TROUGH 25S148W 18S155W 17S168W TO NEW LOW TO 

SECOND LOW TO 11S160E. WINDS 30 TO 40 KT FROM 22S TO 15S BETWEEN 

171W AND 179W. WINDS 20 TO 30 KT ELSEWHERE S OF 13S BETWEEN 169W 

AND 178E...AND S OF 17S W OF 178E.



.SYNOPSIS AND FORECAST.



.TROUGH 25S169E 17S168E 14S160E MOVING NE SLOWLY. WINDS 20 TO 25 

KT S OF TROUGH. ISOLATED MODERATE TSTMS WITHIN 90 NM OF TROUGH.

.24 HOUR FORECAST TROUGH 25S172E 17S167E 13S160E. WINDS S OF LINE

25S170E 18S166E 13S160E. 

.48 HOUR FORECAST MERGES WITH TROUGH DESCRIBED IMMEDIATELY ABOVE.



.48 HOUR FORECAST WINDS 20 TO 25 KT S OF 22S E OF 137W.



.WINDS 20 KT OR LESS REMAINDER OF FORECAST AREA.



.SEAS 12 TO 14 FT S OF LINE 25S147W 18S133W 13S165W 15S178W

20S176E 25S175E. SEAS 8 TO 12 FT ELSEWHERE S OF LINE 03N120W

10S131W 04S134W 04S139W 19S140W 13S154W 00S146W 00S170W 04S178W

16S169E 25S167E...AND S OF LINE 25S164E 21S160E.

.24 HOUR FORECAST SEAS 12 TO 14 FT FROM 25S172E 20S178E 19S176E 

23S170E 22S160E. SEAS 8 TO 12 FT ELSEWHERE S OF LINE 05S120W 

01S124W 04S131W 21S144W 09S155W 09S166W 00S170W 14S172W 10S177W 

16S169E 14S160E.

.48 HOUR FORECAST SEAS 12 TO 14 FT S OF LINE 25S173E 18S173W 

19S170E 23S167E 22S160E. SEAS 8 TO 12 FT ELSEWHERE S OF LINE 

25S152W 20S163W 16S163W 13S176E 17S179W 14S160E...AND S OF LINE 

23S120W 19S130W 20S140W 25S149W.



.SEAS 8 FT OR LOWER REMAINDER OF FORECAST AREA.



.ITCZ 11S120W 11S135W 04S146W. ISOLATED MODERATE TSTMS WITHIN 240

NM S OF ITCZ...AND WITHIN 150 NM N OF ITCZ.





$$



.FORECASTER PIERCE. HONOLULU HI.