Early warning system

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An early warning system, or specifically a functional early warning system, is a chain of information communication systems comprising sensor, detection, decision, and broker subsystems, in the given order, working in conjunction, forecasting and signalling disturbances adversely affecting the stability of the physical world; and giving sufficient time for the response system to prepare resources and response actions to minimize the impact on the stability of the physical world.[1]

An early warning system is more than a warning system; where a warning system is namely the technique linked to the broker subsystem for communicating the warning to the intended recipients for response actions or inactions.

Since the Indian Ocean tsunami of 26 December 2004, there has been a surge of interest in developing early warning systems to cater to the needs of all countries and all hazards.[2]


  1. ^ Waidyanatha, Nuwan (2010). "Towards a typology of integrated functional early warning systems". International Journal of Critical Infrastructures. No 1 6: 31–51. doi:10.1504/ijcis.2010.029575. Retrieved 3 August 2012. 
  2. ^ Basher, Reid (15 August 2006). "Global early warning systems for natural hazards: systematic and people-centered". Philosophical Transactions of the Royal Society. doi:10.1098/rsta.2006.1819.