https://phys.org/news/2018-07-gpm-satellite-tropical-storm-chris.html

Dual-Frequency Precipitation Radar (DPR) instruments revealed that intense bands of precipitation were wrapping around the eastern side of the intensifying tropical storm. GPM's radar (DPR Ku Band) indicated that rain was falling at over 123 mm (4.8 inches) per hour in strong convective storms east of CHRIS' forming eye.

The 3-D structure of precipitation of intensifying tropical storm Chris was revealed by the GPM satellite's radar (DPR Ku Band). In a simulated 3-D view created at NASA's Goddard Space Flight Center in Greenbelt, Maryland, the image, looking toward the northeast, clearly showed a rain band wrapping around the southern and eastern side of the tropical storm and Chris' forming eye wall. GPM's radar revealed that some storm tops in the forming eye wall were reaching heights above 13 km (8.1 miles).