1概述受西风槽与暖湿气流的共同影响,2012年7月1日～7月4日,安康市出现了一次较强的暴雨天气过程,累积面平均降雨74.9mm。受暴雨影响,汉江及支流发生了入汛以来最大洪水,市境内共有10条河流12站出现洪峰47次,月河、恒河、旬河出现了超警戒流量洪水,其中,月河长枪铺站7月4日14时出现 1 Overview Affected by the combined effect of the westerly trough and the warm and humid air flow, an intense rainstorm occurred in Ankang City from July 1 to July 4, 2012, with an average cumulative rainfall of 74.9mm. Affected by the heavy rain, the Han River and its tributaries have experienced the largest flood since the flood season. A total of 10 floods occurred in 12 stations in the city, with 47 floods peaked at Yuhe, Ganges and Xunhe. Among them, At 4 o’clock on July 4 appeared