Incazelo yesichazamazwi yegama elithi "cloud seeder" ibhekisela kudivayisi noma inqubo esetshenziselwa ukufaka imvula ngokuzenzekelayo ngokuhlakaza izinto emafwini, ngokuvamile ukukhulisa imvula ezindaweni ezibhekene nesomiso noma ukuntuleka kwamanzi. Izinto ezihlakazeka emafwini zingase zihlanganise amakhemikhali afana ne-silver iodide, i-potassium iodide, ne-sodium chloride, angenza kube lula ukwakheka kwamaconsi emvula noma amakristalu eqhwa. Inqubo yokutshala amafu ngezinye izikhathi ibizwa ngokuthi ukuguqulwa kwesimo sezulu, futhi ivame ukusetshenziswa kwezolimo, ezamahlathi, nezinye izimboni ezithembele emithonjeni yamanzi.