2026 tropical cyclone season · Southern Hemisphere
Cyclone Hayley Hayley · SH102026
Cyclone Hayley was tracked in the Southern Hemisphere from 2025-12-27 to 2026-01-01 (5 days), peaking at 89 kt (H2) with a minimum pressure of 964 hPa. 140 archived forecasts from ECMWF, ECMWF ENS are verified against its best track; at 48 hours the closest was ECMWF ENS, 113 km off on average.
- ATCF ID
- SH102026
- Basin
- Southern Hemisphere
- Tracked
- 2025-12-27 → 2026-01-01 (5 days)
- Peak wind
- 89 kt · 46 m/s · H2
- Minimum pressure
- 964 hPa
- Archived forecasts
- 140
- Sources
- ECMWF · ECMWF ENS
Forecast track error (km)
| Source | 24 h | 48 h | 72 h | 120 h |
|---|---|---|---|---|
| ECMWF ENS | 65 (8) | 113 (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 |
|---|---|---|---|---|
| 2025-12-28 06Z | 13.1°S 119.5°E | 35 | 1001 | TS |
| 2025-12-28 12Z | 13.6°S 119.4°E | 39 | 996 | TS |
| 2025-12-28 18Z | 14.1°S 119.4°E | 45 | 993 | TS |
| 2025-12-29 00Z | 14.7°S 119.4°E | 54 | 988 | TS |
| 2025-12-29 06Z | 15.2°S 119.6°E | 60 | 985 | TS |
| 2025-12-29 12Z | 15.7°S 120.0°E | 74 | 976 | H1 |
| 2025-12-29 18Z | 16.1°S 120.3°E | 89 | 964 | H2 |
| 2025-12-30 00Z | 16.4°S 121.2°E | 89 | 966 | H2 |
| 2025-12-30 06Z | 16.5°S 122.0°E | 89 | 967 | H2 |
| 2025-12-30 12Z | 16.7°S 123.3°E | 74 | 969 | H1 |
| 2025-12-30 18Z | 16.8°S 124.3°E | 54 | 987 | TS |
| 2025-12-31 00Z | 16.9°S 125.4°E | 39 | 998 | TS |