AIRS Image of Hellen (image) NASA/Goddard Space Flight Center Caption When NASA's Aqua satellite passed over Madagascar on Mar. 31 at 10:47 UTC/6:47 a.m. EDT, it showed powerful thunderstorms circling the center of Hellen (purple). Credit NASA/JPL, Ed Olsen Usage Restrictions None 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.