2023 tropical cyclone season · North Atlantic
Hurricane Sean Sean · AL192023
Hurricane Sean was tracked in the North Atlantic from 2023-10-10 to 2023-10-16 (6 days), peaking at 40 kt (TS) with a minimum pressure of 1005 hPa. 146 archived forecasts from NHC, ECMWF, ECMWF ENS, GFS, GEFS are verified against its best track; at 48 hours the closest was ECMWF ENS, 130 km off on average.
- ATCF ID
- AL192023
- Basin
- North Atlantic
- Tracked
- 2023-10-10 → 2023-10-16 (6 days)
- Peak wind
- 40 kt · 21 m/s · TS
- Minimum pressure
- 1005 hPa
- Archived forecasts
- 146
- Sources
- NHC · ECMWF · ECMWF ENS · GFS · GEFS
Forecast track error (km)
| Source | 24 h | 48 h | 72 h | 120 h |
|---|---|---|---|---|
| NHC | 97 (14) | 148 (10) | 134 (6) | — |
| ECMWF | 107 (7) | 134 (5) | 212 (4) | — |
| ECMWF ENS | 106 (11) | 130 (10) | 140 (6) | — |
| GFS | 113 (15) | 214 (11) | 281 (7) | — |
| GEFS | 93 (15) | 173 (11) | 228 (7) | — |
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 |
|---|---|---|---|---|
| 2023-10-10 18Z | 9.6°N 30.2°W | 30 | 1007 | TD |
| 2023-10-11 00Z | 9.8°N 31.4°W | 35 | 1006 | TS |
| 2023-10-11 06Z | 10.1°N 32.6°W | 35 | 1006 | TS |
| 2023-10-11 12Z | 10.7°N 33.7°W | 35 | 1006 | TS |
| 2023-10-11 18Z | 11.3°N 34.7°W | 30 | 1007 | TD |
| 2023-10-12 00Z | 11.8°N 35.6°W | 30 | 1007 | TD |
| 2023-10-12 06Z | 12.3°N 36.4°W | 30 | 1007 | TD |
| 2023-10-12 12Z | 12.8°N 37.1°W | 35 | 1006 | TS |
| 2023-10-12 18Z | 13.3°N 37.8°W | 40 | 1005 | TS |
| 2023-10-13 00Z | 13.7°N 39.0°W | 40 | 1005 | TS |
| 2023-10-13 06Z | 14.0°N 40.1°W | 40 | 1005 | TS |
| 2023-10-13 12Z | 14.3°N 41.2°W | 35 | 1006 | TS |
| 2023-10-13 18Z | 14.6°N 42.2°W | 35 | 1006 | TS |
| 2023-10-14 00Z | 14.9°N 42.7°W | 35 | 1006 | TS |
| 2023-10-14 06Z | 15.3°N 43.3°W | 30 | 1007 | TD |
| 2023-10-14 12Z | 15.8°N 43.9°W | 30 | 1007 | TD |
| 2023-10-14 18Z | 16.3°N 44.5°W | 30 | 1007 | TD |
| 2023-10-15 00Z | 16.8°N 45.1°W | 30 | 1008 | TD |
| 2023-10-15 06Z | 17.3°N 45.8°W | 30 | 1009 | TD |
| 2023-10-15 12Z | 17.6°N 46.6°W | 25 | 1010 | TD |
| 2023-10-15 18Z | 17.9°N 47.6°W | 25 | 1010 | TD |
| 2023-10-16 00Z | 18.1°N 48.6°W | 25 | 1011 | TD |
| 2023-10-16 06Z | 18.2°N 49.8°W | 25 | 1011 | TD |
| 2023-10-16 12Z | 18.3°N 51.0°W | 20 | 1011 | TD |
| 2023-10-16 18Z | 18.4°N 52.2°W | 20 | 1011 | TD |