GPM Image of Tropical Storm Irondro (IMAGE) NASA/Goddard Space Flight Center Caption The GPM core satellite passed over Tropical Storm Irondro on Apr. 6 at 2:26 a.m. EDT (0626 UTC). Heaviest rainfall (orange), located southeast of the center, was falling at a rate 1 inch (25 mm) per hour. Light rain (blue) was found throughout the rest of the storm. Credit NASA/JAXA/NRL 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.