Recent natural disasters have highlighted society¿s dependency on the correct functioning of critical infrastructures (CIs). The existing interdependencies among CIs complicate matters further, since a failure in a CI can spread through cascading effects to other infrastructures or sectors. Thus society's welfare becomes severely affected, complicating emergency response and increasing the total impact of natural disasters. The aim of this paper is to illustrate the important role that affected CIs have on the overall impact of a natural disaster. We have developed a simulation model that represents a huge storm affecting the energy system, transport and food CIs on a small island. Through this simulation model we can show the effects associated with CIs and the effects of applying crisis management policies.