 The "Secrets of the Tornado" documentary featured a detailed instructional section with an accompanying printed guide for constructing one's own.A page on The Tornado Project's website in 2018 indicates "Significant Tornadoes" will be updated and released in two volumes of approximately 705 pages each covering tornadoes from 1680 to 1949 and 1950 to 2019.The new volumes will include updates on statistics, graphs, and charts, as well as analysis of trends in tornadic activity and examination of potential influence thereof by climate change.