Tornado (IMAGE) University of Colorado at Boulder Caption CU-Boulder faculty and students are participating in VORTEX2, the largest tornado field project in history that is set to take place in "Tornado Alley" beginning May 1. Credit NOAA 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.