2026 tropical cyclone season · Southern Hemisphere
Cyclone Unnamed SH08 SH08 · SH082026
Cyclone Unnamed SH08 was tracked in the Southern Hemisphere from 2025-12-14 to 2025-12-17 (3 days), peaking at 39 kt (TS) with a minimum pressure of 997 hPa. 60 archived forecasts from ECMWF, ECMWF ENS are verified against its best track; at 48 hours the closest was ECMWF, 198 km off on average.
- ATCF ID
- SH082026
- Basin
- Southern Hemisphere
- Tracked
- 2025-12-14 → 2025-12-17 (3 days)
- Peak wind
- 39 kt · 20 m/s · TS
- Minimum pressure
- 997 hPa
- Archived forecasts
- 60
- Sources
- ECMWF · ECMWF ENS
Forecast track error (km)
| Source | 24 h | 48 h | 72 h | 120 h |
|---|---|---|---|---|
| ECMWF | 105 (6) | 198 (3) | 412 (1) | — |
| ECMWF ENS | 95 (7) | 218 (3) | 602 (1) | — |
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 |
|---|---|---|---|---|
| 2025-12-14 12Z | 12.9°S 168.9°E | 39 | 999 | TS |
| 2025-12-14 18Z | 13.4°S 169.4°E | 39 | 997 | TS |
| 2025-12-15 00Z | 14.1°S 169.8°E | 35 | 999 | TS |
| 2025-12-15 06Z | 14.6°S 170.5°E | 39 | 998 | TS |
| 2025-12-15 12Z | 14.8°S 171.2°E | 39 | 1000 | TS |
| 2025-12-15 18Z | 15.2°S 171.8°E | 35 | 1002 | TS |
| 2025-12-16 00Z | 15.4°S 172.0°E | 35 | 1002 | TS |
| 2025-12-16 06Z | 15.1°S 172.1°E | 35 | 1003 | TS |
| 2025-12-16 12Z | 14.6°S 172.5°E | 35 | 1003 | TS |
| 2025-12-16 18Z | 14.3°S 172.5°E | — | — | — |
| 2025-12-17 00Z | 14.0°S 172.3°E | — | — | — |
| 2025-12-17 06Z | 13.8°S 172.2°E | 25 | 1006 | TD |
| 2025-12-17 12Z | 13.5°S 172.3°E | 25 | 1006 | TD |