Flow Structure of Hailstorm in Beijing Area

By using the single-Doppler weather radar observations, synoptic situations and satellite cloud pictures, the hailstorm occurring on June 22, 1995 in Beijing area is analyzed. From the retrieved horizontal and vertical wind fields, it is shown that this process occurring along a convergence band and the air flow in the vertical sections are well-organized with upward and strong rotations. The wind structure, different from traditional supercell storm conception, has its local topographic characteristics