625   
FZPS40 PHFO 190019 CCA  
HSFSP   
  
HIGH SEAS FORECAST  
NATIONAL WEATHER SERVICE HONOLULU HI  
2330 UTC THU SEP 18 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS  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 1800 UTC SEP 18 2025.  
24 HOUR FORECAST VALID 1800 UTC SEP 19 2025.  
48 HOUR FORECAST VALID 1800 UTC SEP 20 2025.  
  
.WARNINGS.  
   
..GALE WARNING  
  
.LOW 20S162W 1010 MB MOVING SE 20 KT. TROUGH FROM LOW TO 18S160W  
10S170W 08S180W 05S160E. FRONT FROM LOW TO 22S160W AND FROM LOW  
TO 15S165W. WINDS 30 TO 35 KT WITHIN 150 NM OF LOW AND FRONTS  
BETWEEN 18S AND 25S. WINDS 20 TO 30 KT ELSEWHERE S OF LINE   
25S170W 15S160W 20S150W 25S145W. SEE ASSOCIATED SEAS BELOW.  
SCATTERED MODERATE TSTMS WITHIN 180 NM OF TROUGH W OF 180W...  
AND S OF 15S.   
.24 HOUR FORECAST LOW 24S161W 1008 MB. FRONT FROM LOW TO 25S155W.  
TROUGH FROM LOW TO 20S160W 15S165W 10S170W 10S180W. WINDS 30 TO   
35 KT S OF 22S BETWEEN 150W AND 160W. WINDS 20 TO 30 KT ELSEWHERE   
S OF 20S BETWEEN 165W AND 145W. SEE ASSOCIATED SEAS BELOW.   
.48 HOUR FORECAST LOW S OF AREA. TROUGH 25S150W 20S155W 15S160W   
18S170W. WINDS DECREASING LESS THAN 20 KT. SEE ASSOCIATED SEAS   
BELOW.   
  
.SYNOPSIS AND FORECAST.  
  
.WINDS 20 KT OR LESS OVER REMAINDER OF FORECAST AREA.  
  
.SEAS 2.5 TO 4 M S OF LINE 25S175W 10S175W 15S160W 18S150W  
25S130W...AND FROM 18S TO 08S BETWEEN 178W AND 162E.   
.24 HOUR FORECAST SEAS 2.5 TO 4 M S OF LINE 25S175W 15S170W  
18S150W 25S120W.   
.48 HOUR FORECAST SEAS 2.5 TO 4 M S OF 20S E OF 165W.   
  
.SEAS 2.5 M OR LOWER OVER REMAINDER OF FORECAST AREA.  
  
  
  
.FORECASTER PECHACEK. HONOLULU HI.  
 
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