https://phys.org/news/2018-07-tropical-cyclone-son-tinh-landfall-nasa.html

GPM is a joint mission between NASA and the Japan Aerospace Exploration Agency, JAXA. GPM's Microwave Imager (GMI) and Dual-Frequency Precipitation Radar (DPR) data showed the locations of heavy rainfall in storms in the western Gulf of Tonkin. GPM's radar (DPR Ku Band) scans of that stormy area revealed that precipitation was dropping at a rate of well over 97 mm (3.8 inches) per hour.

At NASA's Goddard Space Flight Center in Greenbelt, Maryland a simulated 3-D observation of precipitation in the Gulf of Tonkin was created with data collected by GPM's radar (DPR Ku Band). The 3-D view showed heavy downpours were returning strong radar echoes to the GPM satellite. Storm tops in the most powerful storms were found by DPR to reach heights of about 16 km (9.9 miles).