Analysis of a Strong Convection Weather Process Occurred in Kezhou of Xinjiang

Based on the conventional meteorological observations and Doppler radar data,the cause of the strong convective weather process occurred in Kezhou on 26 May 2008 was analyzed from weather situation,T213 numerical prediction physical quantity field and radar echo's evolution. Results show that this weather event occurred under the low value system over Central Asia,the invasion of high level cold air triggered the unstable energy release,and strong updrafts produced by the coupled of high and low level jets were favorable for occurrence of this severe weather. The instable atmospheric layer and well water vapor transport were advantageous to formation and developing of the convective weather,and the convergence of radial velocity was the direct reason for the convective weather.