This was published in Ceylon Today but they appear to have some kind of lag built into their online publication. So we are sharing the reflective column by Nalaka Gunawardene from his website. Whatever the hazard, early warnings would work well when adequate technological capability combines with proper decision-making and dissemination systems, and prepared communities. In the case of tsunamis, an effective warning and mitigation system means people living in vulnerable coastal areas know how to respond when a potentially destructive tsunami may be approaching. Tsunami warning systems are made up of three components.