The results of the carried out investigations that arte thoroughly described in this article unquestionably acknowledge that climate conditions have the decisive role in the determination of direction and increase of evolutionary modifications of other natural components and of geographical zones in general.Considering the evidence and rhythmic multiyear character of climatic fluctuations and natural hazards, the longest and most complete series of instrumental meteorological observations have been registered at the stations in Chisinau, Soroca, Balti, Tiraspol, Dubasari, Cahul, Cornesti, Comrat, CiadirLunga Currently it is well known that the frequency and intensity of climatic phenomena, including heavy rains, is determined not only by regional terrestrial factors but also by astrophysical and astronomic factors such as periodical variations of solar activity and tidal forces, as well as by the significant fluctuations of the physical, gravitational, magnetic, electric and thermal fields intensity, which depend directly by the position of the Earth and other planets of Solar System in relation to the Sun and Moon. The unexpected variations of the gravitational field and solar energy streams are capable of causing significant disturbances in regional atmospheric circulation that often culminates in natural calamities on different regions of the Earth.