AIRS image of Irwin (IMAGE) NASA/Goddard Space Flight Center Caption On July 24 at 5:41 a.m. EDT (0941 UTC) the AIRS instrument aboard NASA's Aqua satellite captured this infrared image of Irwin when it was still a tropical storm. The image showed a large area of powerful storms with very cold cloud tops (purple) surrounding the center. Credit Credits: NASA JPL/Ed Olsen 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.