https://phys.org/news/2018-07-nasa-satellites-tropical-cyclone-ampil.html

Data received by the GPM core satellite's Microwave Imager (GMI) and Dual-Frequency Precipitation Radar (DPR) instruments were used in an analysis of Ampil's precipitation. GMI and DPR showed that the northern side of the tropical storm was nearly dry and that rain bands in that area were producing only light to moderate rainfall. However, the most intense downpour was occurring in a band of thunderstorms well to the northeast of Ampil's center. Precipitation in that area was measured by GPM's radar (DPR Ku Band) falling at a rate of over 139 mm (5.5 inches) per hour.

GPM found moderate to heavy precipitation in a rain band wrapping around the southern side of the tropical cyclone's center of circulation. GPM is a joint mission between NASA and the Japan Aerospace Exploration Agency, JAXA.