Irwin was a TS Atlantic tropical cyclone that existed from August 26 to September 3, 2023 (9 days). It reached peak winds of 46 mph (40 kt) and a minimum central pressure of 998 mb.
The National Hurricane Center's official post-storm analysis is published as a detailed PDF report — meteorological history, casualties, damage assessment, forecast performance, and synoptic discussion.
Read NHC's full report on Irwin → (opens at nhc.noaa.gov)| Time (UTC) | Status | Lat | Lon | Winds (kt) | Pressure (mb) | Record |
|---|---|---|---|---|---|---|
| 2023-08-26 18:00 | TD | 15.50 | -117.90 | 30 | 1001 | |
| 2023-08-27 00:00 | TD | 15.90 | -118.60 | 30 | 1001 | |
| 2023-08-27 06:00 | TD | 16.30 | -119.30 | 30 | 1001 | |
| 2023-08-27 12:00 | TS | 16.60 | -120.00 | 35 | 1000 | |
| 2023-08-27 18:00 | TS | 17.00 | -121.00 | 35 | 999 | |
| 2023-08-28 00:00 | TS | 17.20 | -121.90 | 35 | 999 | |
| 2023-08-28 06:00 | TS | 17.50 | -122.60 | 35 | 999 | |
| 2023-08-28 12:00 | TS | 17.90 | -123.20 | 35 | 999 | |
| 2023-08-28 18:00 | TS | 18.50 | -123.80 | 35 | 999 | |
| 2023-08-29 00:00 | TS | 19.10 | -125.00 | 40 | 998 | |
| 2023-08-29 06:00 | TS | 19.50 | -126.40 | 40 | 999 | |
| 2023-08-29 12:00 | LO | 19.70 | -128.10 | 35 | 1002 | |
| 2023-08-29 18:00 | LO | 19.30 | -129.60 | 35 | 1003 | |
| 2023-08-30 00:00 | LO | 18.90 | -131.00 | 30 | 1004 | |
| 2023-08-30 06:00 | LO | 18.80 | -132.30 | 30 | 1005 | |
| 2023-08-30 12:00 | LO | 19.00 | -133.50 | 25 | 1005 | |
| 2023-08-30 18:00 | LO | 19.10 | -134.50 | 25 | 1005 | |
| 2023-08-31 00:00 | LO | 19.10 | -135.40 | 25 | 1005 | |
| 2023-08-31 06:00 | LO | 19.10 | -136.40 | 25 | 1005 | |
| 2023-08-31 12:00 | LO | 19.10 | -137.20 | 25 | 1005 | |
| 2023-08-31 18:00 | LO | 19.10 | -137.90 | 25 | 1005 | |
| 2023-09-01 00:00 | LO | 19.00 | -138.50 | 25 | 1005 | |
| 2023-09-01 06:00 | LO | 18.80 | -139.00 | 25 | 1005 | |
| 2023-09-01 12:00 | LO | 18.50 | -139.30 | 25 | 1005 | |
| 2023-09-01 18:00 | LO | 18.10 | -139.70 | 25 | 1005 | |
| 2023-09-02 00:00 | LO | 17.70 | -140.10 | 25 | 1005 | |
| 2023-09-02 06:00 | LO | 17.30 | -140.50 | 25 | 1005 | |
| 2023-09-02 12:00 | LO | 16.90 | -140.80 | 25 | 1005 | |
| 2023-09-02 18:00 | LO | 16.50 | -141.10 | 20 | 1006 | |
| 2023-09-03 00:00 | LO | 16.20 | -141.40 | 20 | 1006 |
Source: NOAA National Hurricane Center HURDAT2 best-track database (nhc.noaa.gov/data). Data is in the public domain. Best-track positions and intensities are post-storm reanalysis estimates and may differ from real-time advisories.