607   
FZPS40 PHFO 230945  
HSFSP   
  
HIGH SEAS FORECAST  
NATIONAL WEATHER SERVICE HONOLULU HI  
1130 UTC SAT AUG 23 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS  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 0600 UTC AUG 23 2025.  
24 HOUR FORECAST VALID 0600 UTC AUG 24 2025.  
48 HOUR FORECAST VALID 0600 UTC AUG 25 2025.  
  
.WARNINGS.  
  
.NONE.  
  
.SYNOPSIS AND FORECAST.  
  
.TROUGH 25S130W 17S132W NEARLY STATIONARY.   
.24 HOUR FORECAST TROUGH 25S130W 19S138W.  
.48 HOUR FORECAST TROUGH 25S126W 17S134W.  
   
TROUGH 25S155W 20S170W 10S172E 07S160E MOVING W 15 KT S OF 21S  
AND  
NEARLY STATIONARY ELSEWHERE. WINDS 20 TO 25 KT S OF TROUGH. SCATTERED  
MODERATE TSTMS FROM 10S TO 06S W OF 173E. ISOLATED MODERATE TSTMS  
WITHIN 90 NM OF TROUGH E OF 177W.  
.24 HOUR FORECAST TROUGH 25S167W 14S180E 10S170E 09S160E. WINDS MAINLY  
20 TO 25 KT S OF TROUGH... AND S OF 20S BETWEEN TROUGH AND 160W.   
.48 HOUR FORECAST TROUGH 25S163W 16S170W 10S175E. WINDS DIMINISHED  
TO 20 KT OR LESS.   
  
.TROUGH 20S148W 15S154W 10S158W MOVING W 15 KT.   
.24 HOUR FORECAST TROUGH 17S160W 12S166W.  
.48 HOUR FORECAST TROUGH DISSIPATED.  
  
.24 HOUR FORECAST NEW FRONT 25S164E 17S160E. WINDS 20 TO 25 KT S   
OF 18S BETWEEN FRONT AND 180W.  
.48 HOUR FORECAST FRONT 25S171E 15S167E 11S160E. WINDS 20 TO 30   
KT S OF 20S BETWEEN FRONT AND 180E.  
  
.WINDS 20 KT OR LESS OVER REMAINDER OF FORECAST AREA.  
   
SEAS 2.5 TO 3.0 M S OF A LINE 20S170W 07S170E 06S160E  
 AND S OF  
04S E OF 130W.   
.24 HOUR FORECAST SEAS 2.5 TO 4.0 M S OF LINE 15S140W 08S150W 08S170W.  
SEAS 2.5 TO 3.0 M S OF 15S BETWEEN 170E AND 180W... AND FROM 16S   
TO 04S E OF 131W.    
48 HOUR FORECAST SEAS 2.5 TO 4.0 M S OF 20S W OF 170W  
 AND S OF  
08S E OF 170W.   
  
.SEAS 2.5 M OR LOWER OVER REMAINDER OF FORECAST AREA.  
  
  
  
.FORECASTER SHIGESATO. HONOLULU HI.  
 
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