Several sediment disasters have occurred in recent years as a result of heavy rainfall. Furthermore, nonstructural measures have been implemented to mitigate these disasters using precipitation information, including continuous precipitation and soil water index. Currently, the precipitation information used for non-structural measures, including 48-hour precipitation, continuous precipitation, and soil rainfall index, need to be calculated individually based on the hourly precipitation data provided by the Japan Meteorological Agency and other similar sources. In this study, we have developed a program that computes precipitation information, including 48-hour precipitation, arbitrary time period precipitation, continuous precipitation, and soil water index. This program is based on radar measurements and helps simplify the development of diverse precipitation information using hourly precipitation data. The program allows users to change the calculation conditions, when assessing diverse precipitation information, to generate the desired output. Furthermore, we have demonstrated that various types of precipitation information can be generated for the Kure region in Hiroshima Prefecture by using the precipitation data obtained during the heavy rain disaster in July, 2018. Moreover, we compared the rainfall observation results with the calculation results and showed that the maximum values of both are almost the same.