TwisterData.com was developed and launched in 2008 by storm chasers and meteorologists David Demko and Donald Giuliano. Don and Dave share a deep passion for weather and meteorology, and began chasing storms together at the University of Oklahoma in 2000.

As avid storm chasers and weather watchers, we make extensive use of internet weather data websites. Our goal was to create a website that gets out of the way of the user, allowing them to focus on the data. We hope we have succeeded and plan on continually improving and enhancing the website's user experience. To learn more about the website's features, please read through our brief tutorial .

We have no plans to charge for basic weather model output data and graphics. Raw scientific data presented on this website is sourced and made freely available to all from NOAA/NWS .