Tornadoes in Norman, Okla., on May 10 (IMAGE) University of Oklahoma Caption The data and image location is just east of Thunderbird Lake, Norman, Oklahoma, on May 10, 2010, at 5:44 pm. Credit University of Oklahoma Atmospheric Radar Research Center 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.