The spatial structures of heavy rain by Doppler radar velocity images, i. e. “Adverse Wind Regions” (AWR) were studied using Doppler radar observation data. AWRs were analysed by statistical data in Beijing-Tianjin-Hebei mesoscale experiment base during the period of 1989~1992. According to AWR occurrence, the forecasting for torrential rain could be made. Its forecast accuracy and probability were tested by CAMS Doppler radar data in 1993. The accuracy was 75% and the generalization for AWR was 86%.