2023 tropical cyclone season · eastern North Pacific
Hurricane Irwin Irwin · EP102023
Hurricane Irwin was tracked in the eastern North Pacific from 2023-08-26 to 2023-09-03 (7 days), peaking at 40 kt (TS) with a minimum pressure of 998 hPa. 92 archived forecasts from NHC, ECMWF, ECMWF ENS, GFS, GEFS are verified against its best track; at 48 hours the closest was GFS, 87 km off on average.
- ATCF ID
- EP102023
- Basin
- eastern North Pacific
- Tracked
- 2023-08-26 → 2023-09-03 (7 days)
- Peak wind
- 40 kt · 21 m/s · TS
- Minimum pressure
- 998 hPa
- Archived forecasts
- 92
- Sources
- NHC · ECMWF · ECMWF ENS · GFS · GEFS
Forecast track error (km)
| Source | 24 h | 48 h | 72 h | 120 h |
|---|---|---|---|---|
| NHC | 86 (6) | 202 (2) | — | — |
| ECMWF | 59 (6) | 183 (2) | — | — |
| ECMWF ENS | 56 (6) | 161 (2) | — | — |
| GFS | 87 (7) | 87 (3) | — | — |
| GEFS | 68 (7) | 103 (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 |
|---|---|---|---|---|
| 2023-08-26 18Z | 15.5°N 117.9°W | 30 | 1001 | TD |
| 2023-08-27 00Z | 15.9°N 118.6°W | 30 | 1001 | TD |
| 2023-08-27 06Z | 16.3°N 119.3°W | 30 | 1001 | TD |
| 2023-08-27 12Z | 16.6°N 120.0°W | 35 | 1000 | TS |
| 2023-08-27 18Z | 17.0°N 121.0°W | 35 | 999 | TS |
| 2023-08-28 00Z | 17.2°N 121.9°W | 35 | 999 | TS |
| 2023-08-28 06Z | 17.5°N 122.6°W | 35 | 999 | TS |
| 2023-08-28 12Z | 17.9°N 123.2°W | 35 | 999 | TS |
| 2023-08-28 18Z | 18.5°N 123.8°W | 35 | 999 | TS |
| 2023-08-29 00Z | 19.1°N 125.0°W | 40 | 998 | TS |
| 2023-08-29 06Z | 19.5°N 126.4°W | 40 | 999 | TS |
| 2023-08-29 12Z | 19.7°N 128.1°W | 35 | 1002 | TS |
| 2023-08-29 18Z | 19.3°N 129.6°W | 35 | 1003 | TS |
| 2023-08-30 00Z | 18.9°N 131.0°W | 30 | 1004 | TD |
| 2023-08-30 06Z | 18.8°N 132.3°W | 30 | 1005 | TD |
| 2023-08-30 12Z | 19.0°N 133.5°W | 25 | 1005 | TD |
| 2023-08-30 18Z | 19.1°N 134.5°W | 25 | 1005 | TD |
| 2023-08-31 00Z | 19.1°N 135.4°W | 25 | 1005 | TD |
| 2023-08-31 06Z | 19.1°N 136.4°W | 25 | 1005 | TD |
| 2023-08-31 12Z | 19.1°N 137.2°W | 25 | 1005 | TD |
| 2023-08-31 18Z | 19.1°N 137.9°W | 25 | 1005 | TD |
| 2023-09-01 00Z | 19.0°N 138.5°W | 25 | 1005 | TD |
| 2023-09-01 06Z | 18.8°N 139.0°W | 25 | 1005 | TD |
| 2023-09-01 12Z | 18.5°N 139.3°W | 25 | 1005 | TD |
| 2023-09-01 18Z | 18.1°N 139.7°W | 25 | 1005 | TD |
| 2023-09-02 00Z | 17.7°N 140.1°W | 25 | 1005 | TD |
| 2023-09-02 06Z | 17.3°N 140.5°W | 25 | 1005 | TD |
| 2023-09-02 12Z | 16.9°N 140.8°W | 25 | 1005 | TD |
| 2023-09-02 18Z | 16.5°N 141.1°W | 20 | 1006 | TD |
| 2023-09-03 00Z | 16.2°N 141.4°W | 20 | 1006 | TD |