To prevent and reduce the risk, is important know the naturals and technologicals hazards (human induced); analize the levels of human settlements vulnerability, infraestructure and ecosystems, in order to identify the risk potencial scenarios and make the medialds to prevent or mitigate its effects by strengthering institutional, technical and scientifical investigation, the active participation of the community in the development planification process in the country, regional and local, in short, medium and long term; it is should consider prevention and risk mitigation programs in all levels to education. Here a calendar of warnings: