The country with the most tornadoes per square mile is England (United Kingdom). England holds the Guinness World Record for the highest number of tornadoes per square mile, with an average of one tornado per 1,754 square miles annually between 1980 and 2012. This density surpasses that of the United States, which averages one tornado per 2,970 square miles annually, despite having the highest total number of tornadoes overall. England, though smaller in total land area, experiences about 30-40 tornadoes a year, mostly weak ones, concentrated in certain regions like the Thames Valley and near Manchester.
In contrast, the United States has the largest total number of tornadoes (around 1,200 annually) and the most violent ones, but because of its vast size, the tornado density per square mile is lower than England's.
Thus, England has the highest tornado concentration on a per area basis worldwide.
