504
FKPA21 PHFO 311439
TCAPA1
TROPICAL STORM IONA ICAO ADVISORY NUMBER 18
NWS CENTRAL PACIFIC HURRICANE CENTER HONOLULU HI CP012025
ISSUED BY NWS NATIONAL HURRICANE CENTER MIAMI FL
1500 UTC THU JUL 31 2025
TC ADVISORY
DTG: 20250731/1500Z
TCAC: PHFO
TC: IONA
ADVISORY NR: 2025/018
OBS PSN: 31/1500Z N1242 W16842
MOV: W 18KT
INTST CHANGE: NC
C: 1001HPA
MAX WIND: 045KT
FCST PSN +3 HR: 31/1800Z N1254 W16937
FCST MAX WIND +3 HR: 045KT
FCST PSN +6 HR: 31/2100Z N1306 W17033
FCST MAX WIND +6 HR: 040KT
FCST PSN +9 HR: 01/0000Z N1318 W17130
FCST MAX WIND +9 HR: 040KT
FCST PSN +15 HR: 01/0600Z N1339 W17312
FCST MAX WIND +15 HR: 040KT
FCST PSN +21 HR: 01/1200Z N1400 W17454
FCST MAX WIND +21 HR: 035KT
FCST PSN +27 HR: 01/1800Z N1421 W17627
FCST MAX WIND +27 HR: 035KT
RMK: THE FORECAST POSITION INFORMATION IN
THIS PRODUCT IS INTERPOLATED FROM
OFFICIAL FORECAST DATA VALID AT 0000...
0600...1200...AND 1800Z.
NXT MSG: 20250731/2100Z
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