 The program has eligibility requirements to ensure they're serving the children with the highest needs. And weather researchers at Iowa State University say shifting climate and warmer ocean temperatures are partially responsible for a record number of tornadoes this spring. More than 100 were reported in Iowa in May alone. 1,100 tornadoes were reported region-wide in May from Texas to Minnesota and from West Virginia to Georgia. That's more than twice the 30-year average.