1996 年7 月23 日22 时25 分至23 时50 分,山西省吕梁地区兴县突降特大暴雨,兴县水文站实测降雨量为107 .0m m ,其中最大1h 降雨量高达101 .6mm ,重现期约为670 年一遇。蔚汾河山洪暴发,兴县城区南沟门前河段调查洪峰流量1 440m3/s,重现期约为80～90 年一遇。兴县城区和部分乡村被淹,造成17 人死亡和9 790 万元的直接经济损失 On July 23, 1996, from 22:25 to 23:50, the sudden heavy rainfall in Xingxian County, Luliang, Shanxi Province and the measured rainfall in Xingxian Hydrological Station was 107.0m, of which the maximum rainfall was as high as 101.6mm in 1h, The recurrence period is about once in 670 years. The outbreak of the Wei Fen River flash floods, Hingxian Nanquangou before the investigation flood peak flow 1440m3 / s, the recurrence of about 80 to 90 years once. Xing County urban area and part of the villages flooded, killing 17 people and a direct economic loss of 97.9 million yuan