https://phys.org/news/2018-10-gpm-satellite-hurricane-leslie.html

The GPM core observatory satellite passed above Hurricane Leslie on Oct. 3, 2018 at 7:33 a.m. EDT (1133 UTC). GPM is a joint mission between NASA and the Japan Aerospace Exploration Agency or JAXA.

At the time GPM passed overhead, Leslie had just been upgraded to a hurricane by the National Hurricane Center (NHC). GPM's Microwave Imager (GMI) instruments collected data that revealed light to moderate convective rainfall in Leslie's clearly evident eye wall. Very little precipitation was shown by GPM in the center of the hurricane's nearly circular eye. Algorithms developed by NASA's Precipitation Measurement  Missions (PMM) science team indicated that rain was falling at over 1.8 inches (45.7 mm) per hour within storms located in the northwestern side of the Leslie's eye wall.