GPM Image of Alex (IMAGE) NASA/Goddard Space Flight Center Caption Most of the rainfall measured by GPM on Jan.15 was measured at less than 20 mm (.8 inches) per hour. GPM found that maximum storm top heights northwest of Alex's cloudy eye were found to reach altitudes of 9.9 km (6.1 miles). Credit Credits: NASA/JAXA/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.