2024 tropical cyclone season · Southern Hemisphere
Cyclone Ialy Ialy · SH242024
Cyclone Ialy was tracked in the Southern Hemisphere from 2024-05-12 to 2024-05-22 (10 days), peaking at 65 kt (H1) with a minimum pressure of 983 hPa. 58 archived forecasts from ECMWF, ECMWF ENS, GFS, GEFS are verified against its best track; at 48 hours the closest was GEFS, 291 km off on average.
- ATCF ID
- SH242024
- Basin
- Southern Hemisphere
- Tracked
- 2024-05-12 → 2024-05-22 (10 days)
- Peak wind
- 65 kt · 33 m/s · H1
- Minimum pressure
- 983 hPa
- Archived forecasts
- 58
- Sources
- ECMWF · ECMWF ENS · GFS · GEFS
Forecast track error (km)
| Source | 24 h | 48 h | 72 h | 120 h |
|---|---|---|---|---|
| ECMWF | 63 (1) | 191 (1) | 355 (1) | 950 (1) |
| ECMWF ENS | 65 (1) | 219 (1) | 397 (1) | — |
| GFS | 147 (20) | 332 (15) | 535 (10) | 996 (4) |
| GEFS | 157 (20) | 291 (14) | 515 (11) | 895 (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 |
|---|---|---|---|---|
| 2024-05-13 18Z | 8.3°S 54.7°E | 15 | 1005 | TD |
| 2024-05-14 00Z | 9.3°S 54.6°E | 20 | 1002 | TD |
| 2024-05-14 06Z | 9.6°S 53.8°E | 20 | 999 | TD |
| 2024-05-14 12Z | 9.0°S 53.2°E | 25 | 997 | TD |
| 2024-05-14 18Z | 8.4°S 52.7°E | 30 | 995 | TD |
| 2024-05-15 00Z | 8.0°S 52.6°E | 30 | 995 | TD |
| 2024-05-15 06Z | 7.8°S 52.8°E | 30 | 995 | TD |
| 2024-05-15 12Z | 7.9°S 53.0°E | 25 | 998 | TD |
| 2024-05-15 18Z | 8.1°S 53.1°E | 25 | 998 | TD |
| 2024-05-16 00Z | 8.5°S 53.1°E | 30 | 996 | TD |
| 2024-05-16 06Z | 8.8°S 52.8°E | 35 | 994 | TS |
| 2024-05-16 12Z | 9.1°S 52.5°E | 35 | 994 | TS |
| 2024-05-16 18Z | 9.4°S 52.2°E | 40 | 992 | TS |
| 2024-05-17 00Z | 9.2°S 51.6°E | 40 | 992 | TS |
| 2024-05-17 06Z | 9.0°S 51.0°E | 40 | 992 | TS |
| 2024-05-17 12Z | 8.7°S 50.4°E | 35 | 994 | TS |
| 2024-05-17 18Z | 8.3°S 49.8°E | 40 | 992 | TS |
| 2024-05-18 00Z | 8.2°S 49.1°E | 40 | 992 | TS |
| 2024-05-18 06Z | 8.0°S 48.4°E | 45 | 990 | TS |
| 2024-05-18 12Z | 7.9°S 47.7°E | 45 | 990 | TS |
| 2024-05-18 18Z | 7.7°S 47.1°E | 50 | 988 | TS |
| 2024-05-19 00Z | 7.5°S 46.5°E | 55 | 985 | TS |
| 2024-05-19 06Z | 7.4°S 45.9°E | 55 | 984 | TS |
| 2024-05-19 12Z | 7.2°S 45.4°E | 55 | 984 | TS |
| 2024-05-19 18Z | 7.0°S 45.0°E | 55 | 984 | TS |
| 2024-05-20 00Z | 6.6°S 44.5°E | 55 | 984 | TS |
| 2024-05-20 06Z | 6.3°S 43.9°E | 50 | 988 | TS |
| 2024-05-20 12Z | 5.9°S 43.6°E | 45 | 990 | TS |
| 2024-05-20 18Z | 5.6°S 43.3°E | 55 | 986 | TS |
| 2024-05-21 00Z | 5.3°S 42.9°E | 55 | 986 | TS |
| 2024-05-21 06Z | 4.9°S 42.5°E | 65 | 983 | H1 |
| 2024-05-21 12Z | 4.6°S 42.0°E | 60 | 985 | TS |
| 2024-05-21 18Z | 4.1°S 41.9°E | 60 | 985 | TS |
| 2024-05-22 00Z | 3.7°S 41.9°E | 45 | 983 | TS |
| 2024-05-22 06Z | 3.4°S 41.9°E | 40 | 996 | TS |
| 2024-05-22 12Z | 3.1°S 41.8°E | 30 | 1000 | TD |