The TRMM satellite had another very good view of subtropical cyclone ARANI in the morning light on 16 March 2011 at 1052 UTC. This orbit showed that there were very heavy thunderstorms in the eastern half of the storm. TRMM's Precipitation Radar (PR) showed that some of these powerful storms were reaching to heights of over 14 km (~8.7 miles) above the surface of the south Atlantic Ocean.

During the daytime on Tuesday 15 March 2011 at 1820 UTC the TRMM satellite flew over a rare cyclone labeled ARANI in the south Atlantic Ocean. ARANI has the appearance of a tropical cyclone but has been classified as a subtropical cyclone. NOAA's Satellite and Information Service classified ARANI as a T1 on the Dvorak intensity scale which would indicate an estimated wind speed of about 29 kts (~33 mph). TRMM's Microwave Imager (TMI) and Precipitation Radar (PR) data were used in the image on the right to show rainfall near ARANI. Tropical cyclones are very rare in the south Atlantic Ocean. In