2025 tropical cyclone season · North Indian Ocean
Cyclone Unnamed IO01 IO01 · IO012025
Cyclone Unnamed IO01 was tracked in the North Indian Ocean from 2025-10-01 to 2025-10-03 (2 days), peaking at 35 kt (TS) with a minimum pressure of 994 hPa. 34 archived forecasts from ECMWF, ECMWF ENS, GFS, GEFS are verified against its best track.
- ATCF ID
- IO012025
- Basin
- North Indian Ocean
- Tracked
- 2025-10-01 → 2025-10-03 (2 days)
- Peak wind
- 35 kt · 18 m/s · TS
- Minimum pressure
- 994 hPa
- Archived forecasts
- 34
- Sources
- ECMWF · ECMWF ENS · GFS · GEFS
Forecast track error (km)
| Source | 24 h | 48 h | 72 h | 120 h |
|---|---|---|---|---|
| ECMWF | 142 (2) | — | — | — |
| ECMWF ENS | 74 (2) | — | — | — |
| GFS | 69 (2) | — | — | — |
| GEFS | 59 (2) | — | — | — |
Mean great-circle distance to the best track at each lead time, counted while the system was a tropical or subtropical cyclone; the number of cases is in brackets.
Best track
Six-hourly positions of the US best track (JTWC / NHC, one-minute winds); grades on the Saffir–Simpson scale.
| Time (UTC) | Position | Wind (kt) | Pressure (hPa) | Grade |
|---|---|---|---|---|
| 2025-10-01 06Z | 15.9°N 86.5°E | 35 | 997 | TS |
| 2025-10-01 12Z | 16.7°N 86.3°E | 35 | 994 | TS |
| 2025-10-01 18Z | 16.8°N 85.8°E | 35 | 994 | TS |
| 2025-10-02 00Z | 17.2°N 85.2°E | 35 | 994 | TS |
| 2025-10-02 06Z | 18.6°N 84.9°E | 35 | 995 | TS |
| 2025-10-02 12Z | 19.5°N 84.7°E | 35 | 995 | TS |