NASA's GPM Satellite Examines Tornadic Thunderstorms (IMAGE) NASA/Goddard Space Flight Center Caption The GPM core observatory satellite flew over the southern U.S. on March 31, 2016, at 10:41 p.m. EDT (April 1, 2016, at 2:41 a.m. UTC) where a tornado was reported near Hartselle, Alabama, less than an hour before the satellite passed over. Rain was falling at more than 91 mm (3.6 inches) per hour east of Chattanooga, Tennessee. Storm tops in Alabama reached above 12 km (7.4 miles). This image represents observed rainfall rates per hour. Credit Credits: NASA/JAXA, Hal Pierce 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.