利用关中东部各气象站和各县防雹站(点)建站以来的连续性降雹资料,统计分析了连续性降雹的时空分布、环流形势、物理量场以及强回波移动規律,总结出影响关中东部连续性降雹的重要天气特征及渭北多雹和多连续性降雹的重要原因是特殊地形与秦岭背风波相叠加的结果。

Using the data in which there are a station occurring more than three consective hail days in east of Guanzhong Plain,Shaanxi,their spatial and temporal distribution features,circulation patterns and the forecasting points were analyzed and summarized.It put forward that the important reason of more hail and consective hail shooting in Weibei is the result of superposition of orography with lee wave in Qinling.