2021年4月15~16日影响潍坊的一次强对流天气过程分析
Analysis of a Severe Convective Weather Process Affecting Weifang from April 15 to 16, 2021

本文利用常规气象资料进行剖面和探空分析，对2021年4月15~16日发生在潍坊地区的强对流天气进行了分析。分析结果表明：此次强对流发生在具有前倾结构的空槽前，高层冷平流、地面冷锋、下暖湿上干冷的不稳定层结和低层辐合、高层辐散的配置加剧了不稳定能量的释放和抬升运动，触发了此次强对流天气的形成。受北支槽影响，上空无明显水汽通道建立，造成此次强对流过程降水量不大、冰雹范围和尺寸较小。回波特征为层云回波包裹着若干积云回波的带状回波，可用于强对流天气的提前预警。
This paper, the severe convective weather that occurred in Weifang on April 15~16, 2021 is analyzed by using conventional meteorological data section and sounding analysis. The analysis results show that the strong convection occurred in front of an empty trough with a forward leaning structure. The unstable stratification of cold advection in the upper layer, cold front on the ground, warm and wet in the lower layer and dry and cold in the upper layer, and the configuration of convergence in the lower layer and divergence in the upper layer intensified the release and uplift of unstable energy, triggering the formation of the strong convection weather. Under the influence of the North Branch trough, there is no obvious water vapor channel above, resulting in small precipitation and hail range and size in this strong convection process. The echo features are stratiform cloud echo and band echo wrapped with several cumulus echoes, which can be used for early warning of severe convective weather.