A network-management system capable of reducing negative impacts of natural disasters on network services. In an example embodiment, in response to an indication of potential failure of one or more network resources in a meteorological event, the network controller operates to orchestrate re-hosting of affected VNFs and perform SDN-based reconfiguration of switches to adapt the traffic flows to the re-hosted VNFs. The indication of potential failure can be provided, e.g., by a specialized application capable of estimating the probabilities of failure for individual network resources based on a plurality of inputs, such as digital weather forecasts for the corresponding geographical area, geographical locations of individual network resources, tolerances of different network resources to specific environmental conditions, previous history of network damage in the same geographical area, alerts from power suppliers, etc. Upon reconfiguration, the network may beneficially have a lower likelihood of service disruptions and/or outages during the meteorological event.