The precipitation research groups in the Mesoscale Atmospheric Processes Branch (Code 613.1) have constructed a number of data sets containing estimates of precipitation which are available at this site. Some estimates are sufficiently well developed that other researchers can find the data and associated products useful. Potential users are urged to pay careful attention to the differences among the data sets and to check back for updates to the data sets. Questions should be directed to the data set originators. All local binary data sets are held in Silicon Graphics (big endian) format.