There are so many tornados and floods this year because we were in a strong La Nina cycle this past winter. Historical statistics tells us that, during the spring following a strong La Nina cycle winter, there tends to be more severe storms, and of greater intensity in the eastern US. There also tends to be large tornado outbreaks. Other known examples of this would be the Super Outbreak of 1974, and the March 2006 outbreak. What is happening this year is not without precedent. It has happened before, and it will happen in the future.