Preface to the Special Issue on the 'Observation, Prediction and Analysis of severe Convection of China' (OPACC) National '973' Projec.

The article focuses on the severe convective weather of China, which refers to intense local heavy precipitation, thunderstorm-induced gale-force winds including those from tornadoes and downbursts, and hail and lightning. The article mentions that the severe convective weather occurs at the smaller meso-γ scale and within organised meso-β scale convective systems. It also discusses a project named "Observation, Prediction and Analysis of severe Convection of China" (OPACC).