AIRS Image of Norbert (IMAGE) NASA/Goddard Space Flight Center Caption This infrared look at post-tropical cyclone Norbert on Sept. 7 at 4:53 p.m. EDT showed only a small area of strong thunderstorms (purple) around its center of circulation. Credit Image Credit: 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.