The main purpose of this research is the construction and maintenance of an automated satellite rainfall estimation technique to provide reliable real-time products to the current hydrological models covering the Amazon region in South America. The high-resolution rainfall rates are available free of cost to Internet users also for other parts of the world including the South Pacific Ocean regions covering Australia, Indonesia and New Zealand. The study is an extension of the automated satellite rainfall estimation technique (Auto-Estimator) developed for the USA at the request of the NOAA National Weather Service (NWS). It provides real-time, high spatial (4 by 4 km) and temporal resolution (half-hour) rainfall estimates using a similar multi-channel, multi-spectral methodology that has proved to be from 70% to 90% percent satisfactory over the US for flash flood applications. The real-time rainfall rate estimates are derived from the infrared channel carried by a geosynchronous satellite plus model-derived precipitable water and relative humidity. This technique has consistently generated rainfall estimates every half-hour over the whole South America region for over four years. It acknowledges the diurnal variation of precipitation and has better temporal and spatial coverage than the TRMM and DMSP(SSM/I) satellite estimates. The South America real-time estimates are available in GRADS format through the NOAA/NESDIS web site http://orbit-net.nesdis.noaa.gov/arad/ht/ff/gilberto.html. Estimates for other parts of the world are available through the web site http://orbit35i.nesdis.noaa.gov/arad/ht/ff/index.html.