2023 tropical cyclone season · North Atlantic
Hurricane Harold Harold · AL092023
Hurricane Harold was tracked in the North Atlantic from 2023-08-21 to 2023-08-23 (2 days), peaking at 50 kt (TS) with a minimum pressure of 996 hPa. 55 archived forecasts from NHC, ECMWF, ECMWF ENS, GFS, GEFS are verified against its best track.
- ATCF ID
- AL092023
- Basin
- North Atlantic
- Tracked
- 2023-08-21 → 2023-08-23 (2 days)
- Peak wind
- 50 kt · 26 m/s · TS
- Minimum pressure
- 996 hPa
- Archived forecasts
- 55
- Sources
- NHC · ECMWF · ECMWF ENS · GFS · GEFS
Forecast track error (km)
| Source | 24 h | 48 h | 72 h | 120 h |
|---|---|---|---|---|
| NHC | 76 (3) | — | — | — |
| ECMWF | 117 (3) | — | — | — |
| ECMWF ENS | 110 (3) | — | — | — |
| GFS | 71 (3) | — | — | — |
| GEFS | 108 (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 |
|---|---|---|---|---|
| 2023-08-21 12Z | 24.7°N 89.2°W | 25 | 1008 | TD |
| 2023-08-21 18Z | 25.0°N 90.8°W | 30 | 1008 | TD |
| 2023-08-22 00Z | 25.4°N 92.4°W | 30 | 1008 | TD |
| 2023-08-22 06Z | 25.8°N 94.3°W | 40 | 1003 | TS |
| 2023-08-22 12Z | 26.8°N 96.4°W | 50 | 996 | TS |
| 2023-08-22 18Z | 27.3°N 98.3°W | 40 | 997 | TS |
| 2023-08-23 00Z | 27.7°N 100.1°W | 30 | 1002 | TD |
| 2023-08-23 06Z | 28.5°N 101.7°W | 25 | 1007 | TD |
| 2023-08-23 12Z | 29.7°N 103.3°W | 20 | 1011 | TD |