以V-3θ图的非规则信息结构分别分析了北京2004年7月10日和上海7月12日出现的突发性强对流降水、风暴和川东北的区域性特大暴雨天气过程的结构特征，并简单地讨论了突发灾害天气的预测原理和分析、预测方法。结果表明，局地强对流降水天气或区域性大暴雨在V-3θ图的结构上事先有明显的征兆而可预测；并作为有效的防灾、减灾和相应城市建设应考虑的排水、储水和防风等的特殊性应急措施。

In this paper the structure characteristics of surprised rain gust and storm in Beijing and Shanghai and heavy rain gust in NE Sichuan are analyzed, and the surprised severe weather is discussed by V - 3θchard. The results showed that the surprised weather can be forecast. Facilities for water drainage water storage and windbreak should be allocated.