734  
FZPS40 PHFO 180331  
HSFSP  
 
HIGH SEAS FORECAST  
NATIONAL WEATHER SERVICE HONOLULU HI  
0530 UTC SAT NOV 18 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS  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 0000 UTC NOV 18 2017.  
24 HOUR FORECAST VALID 0000 UTC NOV 19 2017.  
48 HOUR FORECAST VALID 0000 UTC NOV 20 2017.  
 
.WARNINGS.  
 
.NONE.  
 
.SYNOPSIS AND FORECAST.  
 
.COLD FRONT 25S177W 20S179W 15S173E 13S167E THENCE TROUGH  
12S160E. FRONT MOVING NE 10 KT E OF 178E. REMAINDER OF FRONT  
AND TROUGH NEARLY STATIONARY. PRE-FRONTAL TROUGH 07S160E 09S170E  
14S178E MOVING SW SLOWLY. NUMEROUS STRONG TSTMS WITHIN 210 NM  
OF LINE 07S168E 09S177E 12S176W 18S172W 24S169W. SCATTERED  
MODERATE TO STRONG TSTMS WITHIN 120 NM E OF FRONT S OF 23S...  
FROM 17S TO 20S BETWEEN 177W AND 180W...AND FROM 05S TO 13S W OF  
165E.  
.24 HOUR FORECAST FRONT 25S175W 17S180E THENCE TROUGH 13S172E  
12S160E. PRE-FRONTAL TROUGH DISSIPATED.  
.48 HOUR FORECAST FRONT DISSIPATED. TROUGH 25S173W 18S180W 13S160E.  
 
.FRONT 25S130W 20S134W 16S142W 16S151W NEARLY STATIONARY. ISOLATED  
MODERATE TSTMS FROM 14S TO 18S BETWEEN 139W AND 150W.  
.24 HOUR FORECAST FRONT DISSIPATED. TROUGH 25S129W 17S134W  
11S147W.  
.48 HOUR FORECAST TROUGH 25S127W 18S131W 13S139W 11S156W.  
 
.TROUGH 18S130W 22S126W NEARLY STATIONARY.  
.24 HOUR FORECAST TROUGH DISSIPATED.  
 
.RIDGE 25S159W 16S165W 07S175W 02S173 NEARLY STATIONARY.  
 
.RIDGE 25S162E 18S176E MOVING SE SLOWLY AND BUILDING E.  
 
.SEAS 8 TO 9 FT S OF 20S BETWEEN 146W AND 162W.  
.24 HOUR FORECAST SEAS 8 TO 11 FT S OF 22S BETWEEN 177E AND  
164E. SEAS 8 TO 9 FT S OF 22S BETWEEN 132W AND 145W.  
.48 HOUR FORECAST SEAS 8 TO 9 FT S OF 21S BETWEEN 145W  
AND 152W.  
 
.ENTIRE AREA WINDS 20 KT OR LESS. REMAINDER OF AREA SEAS  
8 FT OR LESS.  
 

 
 
.FORECASTER BIRCHARD. HONOLULU HI.  
 
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