429  
FZPS40 PHFO 062224  
HSFSP  
 
HIGH SEAS FORECAST  
NATIONAL WEATHER SERVICE HONOLULU HI  
2330 UTC MON APR 06 2020  
 
SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS  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 APR 06 2020.  
24 HOUR FORECAST VALID 1800 UTC APR 07 2020.  
48 HOUR FORECAST VALID 1800 UTC APR 08 2020.  
 
.WARNINGS.  
   
..HURRICANE WARNING
 
 
.SEVERE TROPICAL CYCLONE HAROLD AT 16.4S 169.6E 920 MB MOVING ESE  
10 KT. NUMEROUS MODERATE TO STRONG TSTMS WITHIN 180 NM OF CENTER  
AND SCATTERED MODERATE TO STRONG TSTMS WITHIN 240 NM SE QUADRANT.  
MAXIMUM SUSTAINED WINDS 135 KT GUSTS 165 KT. WINDS 34 KT OR  
GREATER WITHIN 145 NM NE...145 NM SE...100 NM SW...140 NM NW  
QUADRANTS. SEAS 12 FT OR HIGHER WITHIN 300 NM OF CENTER. WINDS 20  
TO 33 KT ELSEWHERE S OF 08S BETWEEN 178E AND 162E. SEAS 8 TO 12 FT  
ELSEWHERE WITHIN 540 NM OF CENTER.  
.24 HOUR FORECAST SEVERE TROPICAL CYCLONE HAROLD AT 18.5S 175.4E.  
MAXIMUM SUSTAINED WINDS 115 KT GUSTS 140 KT. WINDS 34 KT OR  
GREATER WITHIN 135 NM NE...135 NM SE...90 NM SW...130 NM NW  
QUADRANTS. SEAS 12 FT OR HIGHER S OF 10S BETWEEN 180E AND 170E.  
WINDS 20 TO 33 KT ELSEWHERE S OF 10S FROM 178W TO 169E. SEAS 8 TO  
12 FT S OF 09S BETWEEN 179W AND 168E.  
.48 HOUR FORECAST TROPICAL CYCLONE HAROLD AT 21.8S 176.5W.  
MAXIMUM SUSTAINED WINDS 85 KT GUSTS 105 KT. WINDS 34 KT OR GREATER  
WITHIN 125 NM NE...125 NM SE...80 NM SW...100 NM NW QUADRANTS.  
SEAS 12 FT OR HIGHER S OF 17S BETWEEN 175W AND 175E. WINDS 20 TO  
33 KT ELSEWHERE S OF 15S BETWEEN 172W AND 175E. SEAS 8 TO 12 FT  
ELSEWHERE S OF 10S BETWEEN 172W AND 169E.  
 
FORECAST WINDS NEAR TROPICAL CYCLONES SHOULD BE USED WITH CAUTION  
DUE TO UNCERTAINTY IN FORECAST TRACK...SIZE...AND INTENSITY.  
 
SEE THE LATEST RSMC NADI BULLETIN WTPS11 NFFN FOR ADDITIONAL  
INFORMATION ON T.C. HAROLD.  
 
.SYNOPSIS AND FORECAST.  
 
.TROUGH ASSOCIATED WITH T.C. HAROLD FROM HAROLD TO 13S160E MOVING  
N SLOWLY.  
.24 HOUR FORECAST TROUGH FROM T.C. HAROLD TO 10S160E.  
.48 HOUR FORECAST TROUGH FROM T.C. HAROLD TO 10S169E TO 08S160E.  
 
.FRONT 25S153W TO 20S160W TO 18S170W TO 20S178E NEARLY  
STATIONARY...WEAKENING.  
.24 HOUR FORECAST FRONT WEAKEN TO A TROUGH 25S157W TO 22S163W TO  
22S175W.  
.48 HOUR FORECAST TROUGH 25S162W TO 23S170W.  
   
TROUGH 25S148W TO 23S150W NEARLY STATIONARY
 
DISSIPATING.  
.24 HOUR FORECAST TROUGH DISSIPATED.  
 
.RIDGE FROM 25S140W TO 20S160W NEARLY STATIONARY.  
 
.RIDGE FROM 25S176W TO 23S170W TO 23S159W MOVING SE 15 KT.  
 
.ELSEWHERE OVER FORECAST AREA WINDS 20 KT OR LESS.  
 
.ELSEWHERE OVER FORECAST AREA SEAS 8 FT OR LOWER.  
 
.ITCZ 05S120W TO 04S127W TO 01S135W. ISOLATED MODERATE TSTMS WITHIN  
120 NM OF ITCZ.  
 
.SCATTERED MODERATE TO STRONG TSTMS WITHIN 100 NM OF A LINE FROM  
08S172E TO 18S176E. ISOLATED MODERATE TSTMS N OF 08S W OF 170E.  
 

 
 
.FORECASTER MORRISON. HONOLULU HI.  
 
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