2026 tropical cyclone season · Southern Hemisphere
Cyclone Blossom Blossom · SH032026
Cyclone Blossom was tracked in the Southern Hemisphere from 2025-09-05 to 2025-09-14 (9 days), peaking at 35 kt (TS) with a minimum pressure of 1004 hPa. 133 archived forecasts from ECMWF, ECMWF ENS are verified against its best track; at 48 hours the closest was ECMWF, 76 km off on average.
- ATCF ID
- SH032026
- Basin
- Southern Hemisphere
- Tracked
- 2025-09-05 → 2025-09-14 (9 days)
- Peak wind
- 35 kt · 18 m/s · TS
- Minimum pressure
- 1004 hPa
- Archived forecasts
- 133
- Sources
- ECMWF · ECMWF ENS
Forecast track error (km)
| Source | 24 h | 48 h | 72 h | 120 h |
|---|---|---|---|---|
| ECMWF | 60 (12) | 76 (8) | 116 (4) | — |
| ECMWF ENS | 53 (12) | 79 (8) | 149 (4) | — |
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 |
|---|---|---|---|---|
| 2025-09-09 06Z | 9.1°S 69.3°E | 35 | 1006 | TS |
| 2025-09-09 12Z | 9.7°S 68.4°E | 35 | 1005 | TS |
| 2025-09-09 18Z | 10.3°S 67.2°E | 35 | 1006 | TS |
| 2025-09-10 00Z | 10.5°S 66.1°E | 35 | 1006 | TS |
| 2025-09-10 06Z | 10.5°S 65.4°E | 35 | 1004 | TS |
| 2025-09-10 12Z | 10.5°S 65.0°E | 35 | 1004 | TS |
| 2025-09-10 18Z | 10.2°S 64.7°E | 35 | 1006 | TS |
| 2025-09-11 00Z | 10.1°S 64.6°E | 35 | 1006 | TS |
| 2025-09-11 06Z | 9.9°S 63.9°E | 35 | 1005 | TS |
| 2025-09-11 12Z | 9.2°S 63.2°E | 35 | 1004 | TS |
| 2025-09-11 18Z | 9.0°S 62.8°E | 35 | 1006 | TS |
| 2025-09-12 00Z | 8.5°S 62.0°E | 29 | 1006 | TD |
| 2025-09-12 06Z | 8.2°S 61.5°E | 29 | 1006 | TD |
| 2025-09-12 12Z | 7.8°S 60.7°E | 25 | 1006 | TD |
| 2025-09-12 18Z | 7.6°S 60.2°E | 25 | 1006 | TD |
| 2025-09-13 00Z | 7.5°S 60.5°E | 25 | 1008 | TD |