616  
FZPS40 PHFO 201608  
HSFSP  
 
HIGH SEAS FORECAST  
NATIONAL WEATHER SERVICE HONOLULU HI  
1730 UTC THU JUL 20 2017  
 
SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS  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 JUL 20 2017.  
24 HOUR FORECAST VALID 1200 UTC JUL 21 2017.  
48 HOUR FORECAST VALID 1200 UTC JUL 22 2017.  
 
.WARNINGS.  
   
..GALE WARNING
 
 
.FRONT 25S179E 21S174E 16S167E MOVING E 10 KT.  
WINDS N 30 TO 35 KT N OF 23S WITHIN 120 NM E OF FRONT. WINDS NE TO  
NW 20 TO 30 KT ELSEWHERE S OF 21S WITHIN 360 NM E OF FRONT. WINDS SW  
TO NW 20 TO 30 KT S OF 23S WITHIN 480 NM W OF FRONT. SEAS 8 TO 14 FT  
W OF LINE 25S178W 22S177E. SCATTERED MODERATE TO STRONG  
TSTMS WITHIN 360 NM E OF FRONT.  
.12 HOUR FORECAST FRONT 25S179W 20S175E 16S169E. WINDS  
N TO NW 20 TO 25 KT S OF 23S WITHIN 360 NM E OF FRONT. SEAS 8 TO  
12 FT S AND SW OF LINE 24S173W 19S171E.  
.24 HOUR FORECAST FRONT 25S177W 20S176E 16S169E. WINDS DIMINISHED  
TO 20 KT OR LESS. SEAS 8 TO 10 FT W OF 23S BETWEEN 165E AND 175W.  
.48 HOUR FORECAST FRONT 25S175W 19S177E 16S171E. SEAS8 TO 12 FT SW  
OF LINE 25S173W 20S171E.  
 
.SYNOPSIS AND FORECAST.  
 
.COLD FRONT 25S120W 22S130W MOVING NE 10 KT THENCE A STATIONARY  
FRONT 20S140W 19S150W. SEE WINDS AND SEAS BELOW.  
.24 HOUR FORECAST FRONT 22S120W 20S135W 19S150W. SEE WINDS AND  
SEAS BELOW.  
.48 HOUR FORECAST FRONT 20S120W 20S135W. SEE WINDS AND SEAS BELOW.  
 
.RIDGE 25S168W 18S178W.  
.24 HOUR FORECAST RIDGE 25S158W 21S175W.  
.48 HOUR FORECAST RIDGE 25S156W 22S168W.  
 
.OTHERWISE WINDS E TO SE 20 TO 30 KT BOUNDED BY 05S175W 05S132W  
16S137W 25S125W 25S175W 18S171W 05S175W.  
.24 HOUR FORECAST WINDS E TO SE 20 TO 30 KT BOUNDED BY 02S168W  
02S140W 10S120W 25S120W 25S160W 15S175W 02S168W.  
.48 HOUR FORECAST WINDS E TO SE 20 TO 30 KT BOUNDED BY 05S177W  
03S142W 09S120W 25S120W 25S156W 23S179W 05S177W.  
 
.SEAS 8 TO 12 FT BOUNDED BY 02S178W 02S120W 15S120W 19S135W 25S125W  
25S150W 15S179E 02S178W.  
.24 HOUR FORECAST SEAS 8 TO 12 FT BOUNDED BY 00S175W 00S135W 08S120W  
25S120W 25S170W 10S179W 05S179W 00S175W.  
.48 HOUR FORECAST SEAS 8 TO 12 FT BOUNDED BY 04S175W 00S160W 00S140W  
05S120W 25S120W 25S160W 13S178E 05S178E 04S175W.  
 
.REMAINDER OF AREA WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT.  
 
.OTHERWISE SCATTERED MODERATE TO STRONG TSTMS N OF 12S W OF 179E.  
ISOLATED MODERATE TO STRONG TSTMS WITHIN 90 NM OF 08S159W.  
 

 
.HONOLULU FORECASTER.  
 
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