Hurricane Helene
Measured data for cyclone Helene, as finalised by the National Hurricane Center.
Official warnings come from the National Hurricane Center and your local emergency agency. This page is informational and does not replace an official advisory.
Wind
120 kt
Category 4
222 km/h · 138 mph
Pressure
939 hPa
Period
2024
Sep 23, 2024 → Sep 28, 2024 · 1 landfall
Position
| When | Position | kt | hPa | Category |
|---|---|---|---|---|
| Sep 23, 2024 12:00 UTC | 17.2, -81.7 | 30 | 1,004 | DB |
| Sep 23, 2024 18:00 UTC | 17.8, -81.9 | 35 | 1,004 | DB |
| Sep 24, 2024 06:00 UTC | 18.6, -82.8 | 35 | 1,001 | DB |
| Sep 24, 2024 12:00 UTC | 19.2, -83.7 | 40 | 999 | TS |
| Sep 25, 2024 00:00 UTC | 19.7, -85.2 | 50 | 990 | TS |
| Sep 25, 2024 06:00 UTC | 20.3, -85.9 | 55 | 985 | TS |
| Sep 25, 2024 18:00 UTC | 22.0, -86.5 | 70 | 978 | HU |
| Sep 26, 2024 06:00 UTC | 23.6, -86.5 | 75 | 970 | HU |
| Sep 26, 2024 12:00 UTC | 24.7, -85.8 | 85 | 963 | HU |
| Sep 27, 2024 00:00 UTC | 28.7, -84.3 | 120 | 941 | HU |
| Sep 27, 2024 06:00 UTC | 31.3, -83.3 | 80 | 957 | HU |
| Sep 27, 2024 18:00 UTC | 36.8, -84.9 | 40 | 983 | LO |
| Sep 28, 2024 00:00 UTC | 38.1, -86.6 | 40 | 985 | LO |
| Sep 28, 2024 12:00 UTC | 36.6, -87.6 | 25 | 997 | LO |
How to read this page
How to read wind and category
Helene had maximum sustained winds of 222 km/h, category Category 4 on the Saffir-Simpson scale — a 1-to-5 scale based on wind alone.
Where this data comes from
Track and intensity come from HURDAT2, the NOAA National Hurricane Center’s historical storm catalogue.
What the category doesn’t tell you
Helene’s category measures wind alone. Rain, storm size and storm surge aren’t in it, and have killed more people than wind in recent hurricanes.
Words on this page
Saffir-Simpson category
A 1-to-5 scale that classifies a hurricane by its maximum sustained wind. From category 3 up a hurricane counts as "major", with significant structural damage expected; the scale ignores rain, size and storm surge, which can be deadly even at a low category.
Standard definition by NHC — National Hurricane Center (Saffir-Simpson Hurricane Wind Scale) · Saffir-Simpson category
Preliminary data
A measurement published as soon as it is collected, before the agency’s final review. It can be corrected or withdrawn: earthquake magnitudes shift in the first hours, air-quality readings are revised weeks later. Use it to plan your day, not for regulatory or legal purposes.
- NOAA HURDAT2 (banco de melhores trajetórias)Licence: Domínio público (dado federal dos EUA) · Credit: NOAA / NHC, HURDAT2 (Atlântico e Pacífico Nordeste)
How to read these numbers
Track points come from HURDAT2, with position, wind and pressure every six hours. Rows marked as landfall are the moments when the centre crossed the coastline.
Frequently asked questions
- What category did Helene reach?
- The sheet shows the peak category, derived from the highest one minute sustained wind in the final reanalysis.
- Why is the death toll not shown?
- Deaths and damage come from narrative reports with varying methodology, not from the track database. We leave that number to the official source.