https://phys.org/news/2018-08-nasa-vapor-patchy-sub-tropical-storm.html

When Sub-Tropical Storm Ernesto was still a depression, Tropical Depression 5, the GPM or Global Precipitation Measurement mission core observatory satellite passed above the western side of newly formed storm on Aug. 15, 2018, at 6:46 a.m. EDT (1046 UTC). The GPM's Microwave Imager (GMI) and Dual-Frequency Precipitation Radar (DPR) instruments revealed that most of the rainfall within the subtropical depression away from the middle of the low level center of circulation. The heaviest rainfall was measured by GPM's DPR in a large feeder band that was spiraling into the southern side of the system. Powerful convective thunderstorms in that area were measured dropping rain at a rate of over 101 mm (about 4 inches) per hour. GPM is a joint mission between NASA and the Japan Aerospace Exploration Agency, JAXA.

At NASA's Goddard Space Flight Center in Greenbelt, Maryland, GPM's radar data (DPR Ku Band) were used to create a 3-D view from the East of the subtropical depression 5. DPR's scans were used to show the precipitation structure of storm tops within subtropical depression 5. DPR found that storm tops were reaching heights above 11 km (6.8 miles) in convective storms located southeast of the system's center of circulation. Storm top height estimates over a larger area than the GPM's radar swath were made possible by blending measurements from DPR with cloud top heights based on the GOES-East satellite's infrared temperatures.