The goal of this open source R-based analysis, as mentioned earlier (first post, second post) is to bring consistency and transparency to the analyses of publicly available Tornado data.
The latest addition to the project is the analysis of local tornado occurrence probability. Below graphics show the average number of tornadoes per year within the United States since 1980. The average number appears to increase with the addition of the recent data.
The project home page is here – http://rationshop.github.io/tornado_r/
Any help or comments or contributions appreciated.