2024 tropical cyclone season · North Atlantic
Hurricane Helene Helene · AL092024
Hurricane Helene was tracked in the North Atlantic from 2024-09-23 to 2024-09-28 (5 days), peaking at 120 kt (H4) with a minimum pressure of 941 hPa. 107 archived forecasts from NHC, ECMWF, ECMWF ENS, GFS, GEFS are verified against its best track; at 48 hours the closest was ECMWF, 78 km off on average.
- ATCF ID
- AL092024
- Basin
- North Atlantic
- Tracked
- 2024-09-23 → 2024-09-28 (5 days)
- Peak wind
- 120 kt · 62 m/s · H4
- Minimum pressure
- 941 hPa
- Archived forecasts
- 107
- Sources
- NHC · ECMWF · ECMWF ENS · GFS · GEFS
Forecast track error (km)
| Source | 24 h | 48 h | 72 h | 120 h |
|---|---|---|---|---|
| NHC | 75 (9) | 111 (5) | 85 (1) | — |
| ECMWF | 38 (9) | 78 (5) | 92 (1) | — |
| ECMWF ENS | 36 (9) | 90 (5) | 90 (1) | — |
| GFS | 52 (9) | 114 (5) | 110 (1) | — |
| GEFS | 44 (9) | 110 (5) | 120 (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 |
|---|---|---|---|---|
| 2024-09-23 12Z | 17.2°N 81.7°W | 30 | 1004 | TD |
| 2024-09-23 18Z | 17.8°N 81.9°W | 35 | 1004 | TS |
| 2024-09-24 00Z | 18.2°N 82.2°W | 35 | 1002 | TS |
| 2024-09-24 06Z | 18.6°N 82.8°W | 35 | 1001 | TS |
| 2024-09-24 12Z | 19.2°N 83.7°W | 40 | 999 | TS |
| 2024-09-24 18Z | 19.4°N 84.6°W | 45 | 997 | TS |
| 2024-09-25 00Z | 19.7°N 85.2°W | 50 | 990 | TS |
| 2024-09-25 06Z | 20.3°N 85.9°W | 55 | 985 | TS |
| 2024-09-25 12Z | 21.1°N 86.2°W | 65 | 979 | H1 |
| 2024-09-25 18Z | 22.0°N 86.5°W | 70 | 978 | H1 |
| 2024-09-26 00Z | 22.8°N 86.7°W | 70 | 973 | H1 |
| 2024-09-26 06Z | 23.6°N 86.5°W | 75 | 970 | H1 |
| 2024-09-26 12Z | 24.7°N 85.8°W | 85 | 963 | H2 |
| 2024-09-26 18Z | 26.6°N 85.0°W | 105 | 958 | H3 |
| 2024-09-27 00Z | 28.7°N 84.3°W | 120 | 941 | H4 |
| 2024-09-27 06Z | 31.3°N 83.3°W | 80 | 957 | H1 |
| 2024-09-27 12Z | 34.4°N 83.2°W | 45 | 973 | TS |
| 2024-09-27 18Z | 36.8°N 84.9°W | 40 | 983 | TS |
| 2024-09-28 00Z | 38.1°N 86.6°W | 40 | 985 | TS |
| 2024-09-28 06Z | 37.4°N 88.1°W | 30 | 992 | TD |
| 2024-09-28 12Z | 36.6°N 87.6°W | 25 | 997 | TD |
| 2024-09-28 18Z | 37.1°N 87.0°W | 20 | 1000 | TD |