On-farm applications to cope with agrometeorological risks and uncertainties cannot be defined objectively without detailed description of all the external and internal driving forces, related events, direct and indirect impacts, consequential effects, available technology and resources, and farmer’s implementation ability, governmental supporting system and national infrastructure. Nevertheless, it may be practiced through an ordinary farm management system when combined or linked together with an appropriate early warning system for natural hazards, if available. The creation of data archives and information bases are essential to decision making as well as research on hazards and warning systems. Components of an early warning system include: observation, detection, monitoring, assessment, forecasting, warning, projection and, valuation.