Abstract:By using FY-2C geo stationary weather satellite cloud images, the ground meso scale weather monitoring data and a series of techniques, such as Weiss Smith method, layering of brightness temperature of cloud top and combination of mult iple channel brightness temperatures, a quantitative analysis was performed for the hail and thunderstorm strong wind weather process that occurred in northern region of Zhejiang on June 10, 2006. The results of cloud image analysis show that th e TBB is lower than 230K(-44°C) when the convection grows most prosperouslyand the area with the brightness temperature difference of lower than -4°C cor responds to the place where is most affected by the strong thunderstorm. The ce nter of low value with Tc≤-7°Ccorresponds to the strong echo of rad ar. There is a good correspondence between the strong convective weather and ma ximum gradient of TBB, which distributes along the moving cloud cluster . The moving path of strong storm is similar to that of the maximum positive gradient of TV.