Analysis on Radar Echo Characteristic of a Supercell Storm Disaster Hail

Using C-band Doppler weather radar data in Shihezi,radar echo evolution characteristic of sever hail storm supercell in the southern edge of Junggar basin,the northern edge of the desert area Shihezi on 28 June 2010 is analyzed.The results showed that the right side of supercell storm forward appeared bow echo,and its rear left and right side respectively appeared 'V' notch;the vertical profile of reflectivity along the inflow direction of the strongest echoes through the location showed the typical bounded weak echo area,the strong echo wall on the left of echo overhang and bounded weak echo area,the maximum echo intensity appeared in the narrow area along the lower part of echo wall,and its value is 70 dBz;the radial velocity presented mesocyclone,the development and maintenance of mesocyclone made the supercell bow echo development and maintenance;severe hail occurred in weak wave zone,large value of the vertically integrated liquid water content and the overlap region in the cyclone area;mesocyclone can warn the hail ahead 30 min,the bounded weak echo of vertical profile for reflectivity and its echo hanging and strong echo center intensity(70 dBz) under echo wall take as an early warning indicator.