2019年6月21—23日冷水江市一次大暴雨天气过程分析

Analysis of a Rainstorm Process in Lengshuijiang from June 21 to 23,2019

利用micaps实况资料、湖南省气象业务内网平台数据及常规气象观测资料,以天气学原理为支撑,对2019年6月21—23日冷水江市出现的大暴雨过程进行了分析。结果表明:(1)该次暴雨是受高空低槽、中低层低涡切变和地面冷空气共同影响所致;(2)850 hPa水汽通量散度、垂直速度、散度三者的负值中心(轴线)对暴雨有很好的指示作用。

Based on the meteorology principle,the process of rainstorm in Lengshuijiang City from June 21 to 23,2019 was analyzed by using the data of MICAPS,Hunan meteorological intranet platform and conventional meteorological observation.The results showed that:(1)The rainstorm was caused by the common influencehe of upper low pressure trough,low-middle level vortex shear and surface cold air.(2)The negative center(axis)of 850 hPa moisture flux divergence,vertical velocity and divergence had good indication function for the rainstorm.