2023 tropical cyclone season · North Atlantic
Hurricane Idalia Idalia · AL102023
Hurricane Idalia was tracked in the North Atlantic from 2023-08-26 to 2023-09-08 (13 days), peaking at 105 kt (H3) with a minimum pressure of 945 hPa. 174 archived forecasts from NHC, ECMWF, ECMWF ENS, GFS, GEFS are verified against its best track; at 48 hours the closest was ECMWF, 99 km off on average.
- ATCF ID
- AL102023
- Basin
- North Atlantic
- Tracked
- 2023-08-26 → 2023-09-08 (13 days)
- Peak wind
- 105 kt · 54 m/s · H3
- Minimum pressure
- 945 hPa
- Archived forecasts
- 174
- Sources
- NHC · ECMWF · ECMWF ENS · GFS · GEFS
Forecast track error (km)
| Source | 24 h | 48 h | 72 h | 120 h |
|---|---|---|---|---|
| NHC | 72 (15) | 105 (11) | 85 (7) | — |
| ECMWF | 56 (15) | 99 (11) | 121 (7) | — |
| ECMWF ENS | 54 (14) | 123 (10) | 138 (6) | — |
| GFS | 69 (16) | 134 (12) | 151 (8) | — |
| GEFS | 84 (16) | 163 (12) | 170 (8) | — |
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 |
|---|---|---|---|---|
| 2023-08-26 12Z | 20.8°N 86.1°W | 25 | 1006 | TD |
| 2023-08-26 18Z | 21.3°N 86.2°W | 25 | 1006 | TD |
| 2023-08-27 00Z | 21.1°N 86.4°W | 30 | 1004 | TD |
| 2023-08-27 06Z | 20.5°N 86.8°W | 30 | 1002 | TD |
| 2023-08-27 12Z | 19.9°N 86.3°W | 35 | 999 | TS |
| 2023-08-27 18Z | 19.9°N 85.8°W | 40 | 996 | TS |
| 2023-08-28 00Z | 19.8°N 85.4°W | 45 | 992 | TS |
| 2023-08-28 06Z | 19.9°N 85.2°W | 55 | 989 | TS |
| 2023-08-28 12Z | 20.6°N 85.2°W | 55 | 989 | TS |
| 2023-08-28 18Z | 21.2°N 85.2°W | 60 | 986 | TS |
| 2023-08-29 00Z | 21.8°N 85.1°W | 60 | 984 | TS |
| 2023-08-29 06Z | 22.6°N 85.0°W | 65 | 981 | H1 |
| 2023-08-29 12Z | 23.8°N 84.8°W | 70 | 978 | H1 |
| 2023-08-29 18Z | 25.3°N 84.8°W | 80 | 973 | H1 |
| 2023-08-30 00Z | 26.9°N 84.7°W | 90 | 965 | H2 |
| 2023-08-30 06Z | 28.3°N 84.5°W | 105 | 945 | H3 |
| 2023-08-30 12Z | 30.0°N 83.5°W | 100 | 954 | H3 |
| 2023-08-30 18Z | 31.5°N 82.5°W | 60 | 981 | TS |
| 2023-08-31 00Z | 32.7°N 80.9°W | 50 | 985 | TS |
| 2023-08-31 06Z | 33.5°N 78.9°W | 50 | 990 | TS |
| 2023-08-31 12Z | 33.7°N 77.0°W | 55 | 990 | TS |
| 2023-08-31 18Z | 33.6°N 74.6°W | 55 | 993 | TS |
| 2023-09-01 00Z | 33.4°N 72.3°W | 55 | 996 | TS |
| 2023-09-01 06Z | 32.7°N 70.5°W | 50 | 997 | TS |
| 2023-09-01 12Z | 32.3°N 68.8°W | 50 | 998 | TS |
| 2023-09-01 18Z | 32.1°N 67.1°W | 50 | 999 | TS |
| 2023-09-02 00Z | 31.9°N 65.7°W | 50 | 999 | TS |
| 2023-09-02 06Z | 31.8°N 64.7°W | 50 | 999 | TS |
| 2023-09-02 12Z | 31.8°N 63.9°W | 50 | 998 | TS |
| 2023-09-02 18Z | 31.8°N 63.1°W | 50 | 997 | TS |
| 2023-09-03 00Z | 32.0°N 62.2°W | 50 | 996 | TS |
| 2023-09-03 06Z | 32.5°N 61.3°W | 50 | 994 | TS |
| 2023-09-03 12Z | 33.4°N 60.5°W | 50 | 992 | TS |
| 2023-09-03 18Z | 34.9°N 59.7°W | 55 | 990 | TS |
| 2023-09-04 00Z | 36.2°N 58.9°W | 60 | 988 | TS |
| 2023-09-04 06Z | 37.6°N 58.0°W | 60 | 985 | TS |
| 2023-09-04 12Z | 39.2°N 57.5°W | 55 | 985 | TS |
| 2023-09-04 18Z | 40.5°N 57.9°W | 55 | 986 | TS |
| 2023-09-05 00Z | 41.1°N 58.7°W | 50 | 986 | TS |
| 2023-09-05 06Z | 41.6°N 59.1°W | 50 | 986 | TS |
| 2023-09-05 12Z | 42.2°N 59.3°W | 45 | 986 | TS |
| 2023-09-05 18Z | 42.6°N 59.8°W | 40 | 987 | TS |
| 2023-09-06 00Z | 42.6°N 60.5°W | 35 | 988 | TS |
| 2023-09-06 06Z | 42.6°N 61.4°W | 35 | 991 | TS |
| 2023-09-06 12Z | 42.6°N 62.0°W | 35 | 992 | TS |
| 2023-09-06 18Z | 42.6°N 62.8°W | 35 | 994 | TS |
| 2023-09-07 00Z | 42.9°N 62.9°W | 30 | 996 | TD |
| 2023-09-07 06Z | 43.0°N 62.1°W | 30 | 998 | TD |
| 2023-09-07 12Z | 43.2°N 61.1°W | 30 | 1000 | TD |
| 2023-09-07 18Z | 43.6°N 60.1°W | 30 | 1001 | TD |
| 2023-09-08 00Z | 44.3°N 59.3°W | 30 | 1002 | TD |
| 2023-09-08 06Z | 45.2°N 58.3°W | 30 | 1003 | TD |