During recent decades the number of emergencies caused by nature has tended to grow worldwide. The sharp growth in population density, urbanization and intensive industrialization, particularly in the developing countries, increases the population's vulnerability to a greater extent. Several countries experience devastating consequences of natural disasters over quite a long time span, consuming a significant part of the national budget. Human efforts are directed mainly at the minimization of the destructive consequences of natural disasters. It is obvious that the successful solution of the above-mentioned arduous socio-economic and scientific-technical problem is closely related to the possibility of developing reliable methods of forecasting natural disasters.