978  
FKPA21 PHFO 010234  
TCAPA1  
 
TROPICAL STORM IONA ICAO ADVISORY NUMBER 20  
NWS CENTRAL PACIFIC HURRICANE CENTER HONOLULU HI CP012025  
ISSUED BY NWS NATIONAL HURRICANE CENTER MIAMI FL  
0300 UTC FRI AUG 01 2025  
 
TC ADVISORY  
DTG: 20250801/0300Z  
TCAC: PHFO  
TC: IONA  
ADVISORY NR: 2025/020  
OBS PSN: 01/0300Z N1342 W17242  
MOV: WNW 20KT  
INTST CHANGE: NC  
C: 1002HPA  
MAX WIND: 045KT  
FCST PSN +3 HR: 01/0600Z N1354 W17328  
FCST MAX WIND +3 HR: 045KT  
FCST PSN +6 HR: 01/0900Z N1406 W17413  
FCST MAX WIND +6 HR: 045KT  
FCST PSN +9 HR: 01/1200Z N1418 W17500  
FCST MAX WIND +9 HR: 045KT  
FCST PSN +15 HR: 01/1800Z N1442 W17627  
FCST MAX WIND +15 HR: 045KT  
FCST PSN +21 HR: 02/0000Z N1506 W17754  
FCST MAX WIND +21 HR: 045KT  
FCST PSN +27 HR: 02/0600Z N1536 W17915  
FCST MAX WIND +27 HR: 045KT  
RMK: THE FORECAST POSITION INFORMATION IN  
THIS PRODUCT IS INTERPOLATED FROM  
OFFICIAL FORECAST DATA VALID AT 0000...  
0600...1200...AND 1800Z.  
NXT MSG: 20250801/0900Z  
 

 
 
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