TRMM Image of Norbert over Arizona (IMAGE) NASA/Goddard Space Flight Center Caption On Sept. 8 at 5:05 a.m. PDT the TRMM satellite saw a cluster of intense thunderstorms in Arizona directly below the satellite. Rain was falling at a rate of over 62 mm (2.4 inches) per hour in some downpours. Credit Credit: SSAI/NASA, 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.