Although there are no east-west mountains in Tornado Alley, we can build some east-west great walls to play the same role. Also learned from Jiang-Huai Hills and Shawnee Hills, the wall needs about 300 meter high and 50 meter wide.
The annually recurring devastating tornado attacks in US Tornado Alley raise an important question: Can we eliminate the major tornado threat in Tornado Alley? Some people may claim that such a question is beyond imagination as people are powerless in facing violent tornadoes. However, according to Professor Rongjia Tao’s recent publication in IJMPB, human beings are not powerless on this issue: if we build three east-west great walls in Tornado Alley, we will eliminate major tornado threat there forever. These walls can be built locally at high tornado risk areas to eliminate tornado threat there first, then gradually extended.
In the US, most devastating tornadoes occur in Tornado Alley, which is a strip of land between the Appalachian Mountains and the Rocky Mountains, including most American Midwest states. In 2013, there were 811 confirmed tornadoes in USA, 57 in Europe and 3 in China. Among 811 tornadoes in USA, most of them, especially the most devastating ones, occurred in Tornado Alley. What causes such huge differences?