A very-short-range Interactive Prediction System (VIPS) has been set up and used at several important Olympic venues by Beijing Meteorological Bureau (BMB) during the 2008 Beijing Olympic and Paralympics Games. The application of this system played an important role in enhancing the capacity of weather services. Taking the weather services of Paralympics Games Opening Ceremony rehearsal as a case, this paper discuss the implementation of acquiring real-time monitoring, early-warning information, and other forecasting products which can be easily and rapidly analyzed onsite, and then timely and accurate weather forecast information based on GIS(Geographic Information System) can be generated for the command center in order to avoid or reduce the impact of severe weather like heavy rainfalls. This research provides an important experience and strategy for future major events as well as very-short-range forecasting operation.