Atlantic 2017 season
Hurricane Irma (2017)
Hurricane Irma was a Category 5 hurricane at its peak, with maximum sustained winds of 178 mph (155 kt) and a minimum central pressure of 914 mb. It was active from Aug 30, 2017 to Sep 13, 2017 and made 7 documented landfalls.
Storm facts
| Peak status | Hurricane — Category 5 |
|---|---|
| Max sustained winds | 155 kt / 178 mph / 287 km/h |
| Minimum central pressure | 914 mb |
| Active dates | Aug 30, 2017 – Sep 13, 2017 |
| Accumulated cyclone energy (ACE) | 78.3 |
| Documented landfalls | 7 |
Every value on this page is taken directly from the NHC HURDAT2 best-track record for Irma 2017. Nothing is estimated. The best-track table below shows one entry per day at 00:00 UTC; the full six-hourly record lives in the HURDAT2 database.
Best-track table (daily, 00:00 UTC)
| Date | Status | Max winds | Position |
|---|---|---|---|
| Aug 30, 2017 | Tropical depression | 30 kt (56 km/h) | 16.1N 26.9W |
| Aug 31, 2017 | Tropical storm | 55 kt (102 km/h) | 16.3N 31.7W |
| Sep 1, 2017 | Hurricane | 100 kt (185 km/h) | 17.5N 35.1W |
| Sep 2, 2017 | Hurricane | 100 kt (185 km/h) | 19.1N 39.7W |
| Sep 3, 2017 | Hurricane | 95 kt (176 km/h) | 18.5N 45.5W |
| Sep 4, 2017 | Hurricane | 100 kt (185 km/h) | 17.3N 50.4W |
| Sep 5, 2017 | Hurricane | 125 kt (232 km/h) | 16.6N 55.1W |
| Sep 6, 2017 | Hurricane | 155 kt (287 km/h) | 17.3N 60.6W |
| Sep 7, 2017 | Hurricane | 150 kt (278 km/h) | 19.2N 66.2W |
| Sep 8, 2017 | Hurricane | 140 kt (259 km/h) | 21.1N 71.8W |
| Sep 9, 2017 | Hurricane | 145 kt (269 km/h) | 22.1N 77.2W |
| Sep 10, 2017 | Hurricane | 100 kt (185 km/h) | 23.4N 80.9W |
| Sep 11, 2017 | Hurricane | 80 kt (148 km/h) | 26.8N 81.7W |
| Sep 12, 2017 | Tropical storm | 35 kt (65 km/h) | 31.9N 84.4W |
| Sep 13, 2017 | Post-tropical low | 15 kt (28 km/h) | 35.6N 88.9W |
Read this like a pro
Wind speeds above are in knots, the unit NHC uses in HURDAT2. For what a Category 5 wind field actually does, see hurricane categories explained; for why the wind number alone never tells the danger story, see storm surge vs. flooding.