TRMM Measures Rainfall in Typhoon Songda (IMAGE) NASA/Goddard Space Flight Center Caption NASA's TRMM satellite captured this image of rainfall happening within Typhoon Songda on May 25, 2011, at 0903 UTC. The yellow and green areas indicate moderate rainfall between .78 to 1.57 inches (20 to 40 mm) per hour. Songda was an intensifying category 3 typhoon with winds near 105 kts at that time. Credit Credit: NASA/SSAI, 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.