GPM Image of Mario (IMAGE) NASA/Goddard Space Flight Center Caption The GPM core satellite passed over developing Tropical Storm Mario in the eastern Pacific Ocean on Sept. 18, 2019 at 3:46 a.m. EDT (0746 UTC) and found the heaviest rainfall (pink) in the southeastern side of the storm falling at a rate of over 36 mm (about 1.4 inch) per hour. GPM data was overlaid on cloud imagery from NOAA's GOES-West satellite. 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.