Home Destroyed (IMAGE) American Geophysical Union Caption A home destroyed by a tornado that struck Quapaw, Oklahoma on April 27, 2014. New research showing that peak tornado activity in the central and southern Great Plains is occurring earlier could help residents in the region be better prepared for severe weather. Credit Credit: National Weather Service in Tulsa, Oklahoma Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.