The purpose of mesoscale atmospheric studies by means of radar radiation is ultrashort range weather forecast effective on time scales of an hour or Ilore F 1] . Different types of meteorological phenomena give characteristic shapes of radar echo . The aim of our work is to find a simple method of classification of clouds for high-speed analysis of meteorological radar gray-scale images. This is the first global stage of radar inages analysis. To get into details on precipitation the local analysis follows. In the second step images of chosen clouds can be analysed . In images impulse noise and oscillations are to be eliminated and edges of smoothed images of clouds are to be preserved .