The design ideas， technical framework， main functions， and application of the Shenzhen Localized Warning System (LWS) for Severe Weather is introduced The system can display a wide range of integrated exploration data and nowcasting products， check and rank (meritbased) the quantitative precipitation forecast products， prompt automatically the formation of LWS areas in accordance with the observation and extrapolation forecasting， forming the LWS areas by free combination of subareas The system links the distribution channels automatically， producing LWS products simultaneously and releasing products through different distribution channels at the same time The system realized the highdegree integration of weather forecasting/earlywarning technology， the earlywarning product development platform， and the earlywarning product distribution system