Based on the wind profile radar basic data of Guizhou Weining Meteorological Bureau, the secondary development products, rain-fall data and MICAPS live data, a hail gale weather process occurred at Weining Station on June 11, 2019 was comprehensively analyzed.The results showed that the horizontal profile product could reflect the space-time change and vertical distribution of cold and warm advection, and detect the cold air intrusion, wind field shear and low-level jet intensity earlier.The atmospheric refractive index structure constant and vertical velocity could indicate the occurrence, duration and intensity of precipitation. There was strong wind vertical shear before the occurrence of heavy precipitation, and the wind vertical shear value in the precipitation process was more than 0.2 s-1 as a whole,the enhancement of wind vertical shear would cause the increase of vertical velocity and surface gale.If more than 15 dBZ and less than 10 dBZ were used as the starting and ending signs of precipitation, the wind profile radar reflectivity factor value could more clearly indicate the beginning and end of precipita-tion than other products.
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