Animations were created using the TRMM 3B42RT data of the Accumulated Rainfall parameter using the GES DISC TRMM Online Visualization and Analysis System (TOVAS)(http://disc2.nascom.nasa.gov/Giovanni/tovas/), which contains TRMM rainfall products, near-real-time 3-hourly, Multi-Satellite Precipitation Analysis, and rainfall ground observation data. The animations are of Hurricane Gustav and of the entire active tropical storm region in the Atlantic.