2025 tropical cyclone season · Southern Hemisphere
Cyclone Bianca Bianca · SH202025
Cyclone Bianca was tracked in the Southern Hemisphere from 2025-02-19 to 2025-02-27 (9 days), peaking at 99 kt (H3) with a minimum pressure of 958 hPa. 87 archived forecasts from ECMWF, ECMWF ENS, GFS, GEFS are verified against its best track; at 48 hours the closest was GFS, 84 km off on average.
- ATCF ID
- SH202025
- Basin
- Southern Hemisphere
- Tracked
- 2025-02-19 → 2025-02-27 (9 days)
- Peak wind
- 99 kt · 51 m/s · H3
- Minimum pressure
- 958 hPa
- Archived forecasts
- 87
- Sources
- ECMWF · ECMWF ENS · GFS · GEFS
Forecast track error (km)
| Source | 24 h | 48 h | 72 h | 120 h |
|---|---|---|---|---|
| ECMWF | 57 (11) | 88 (7) | 141 (3) | — |
| ECMWF ENS | 54 (11) | 86 (7) | 91 (3) | — |
| GFS | 44 (11) | 84 (7) | 56 (3) | — |
| GEFS | 71 (11) | 116 (7) | 70 (3) | — |
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 |
|---|---|---|---|---|
| 2025-02-23 06Z | 16.7°S 107.3°E | 39 | 998 | TS |
| 2025-02-23 12Z | 17.2°S 106.0°E | 45 | 998 | TS |
| 2025-02-23 18Z | 17.8°S 104.9°E | 45 | 999 | TS |
| 2025-02-24 00Z | 18.4°S 104.6°E | 54 | 995 | TS |
| 2025-02-24 06Z | 19.0°S 103.6°E | 74 | 985 | H1 |
| 2025-02-24 12Z | 19.5°S 103.2°E | 74 | 985 | H1 |
| 2025-02-24 18Z | 20.2°S 102.9°E | 93 | 958 | H2 |
| 2025-02-25 00Z | 21.1°S 102.5°E | 99 | 962 | H3 |
| 2025-02-25 06Z | 22.0°S 102.2°E | 99 | 962 | H3 |
| 2025-02-25 12Z | 22.8°S 102.2°E | 93 | 965 | H2 |
| 2025-02-25 18Z | 23.9°S 102.0°E | 89 | 968 | H2 |
| 2025-02-26 00Z | 24.7°S 102.4°E | 64 | 986 | H1 |
| 2025-02-26 06Z | 25.5°S 102.7°E | 45 | 999 | TS |
| 2025-02-26 12Z | 26.3°S 103.7°E | 35 | 1006 | TS |
| 2025-02-26 18Z | 26.6°S 104.2°E | 35 | 1005 | TS |