分析指出，该飑线系统是由高空槽前型的上干下湿引起的不稳定强对流天气。
The squall line is a kind of instable and strong convective weather caused by the air with upper-layer dry and lower-layer wet in front of the upper-troposphere trough.
分析了当前专业预报服务的现状，根据需要建立了一套完善的强降水、强对流天气动态监测、分析和预报服务系统。
We analyzed the actuality of professional forecasting service, and then constructed a perfect dynamic monitoring, analyzing and forecasting serving system for heavy rainstorm and severe convection.
分析了造成湖北省强对流灾害的天气尺度系统、中小尺度系统的特征等。
The characteristics of synoptic scale systems and the meso-micro scale systems which resulted in the calamity of severe convection in Hubei province are summarized.
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