Sec. 4. As used in this chapter, "catastrophe" means an event that is the subject of a declaration by the commissioner and that:
(1) results in a large number of deaths or injuries;
(2) causes extensive damage or destruction of facilities used to provide and sustain human needs;
(3) produces an overwhelming demand on state and local response resources and mechanisms;
(4) causes a severe long term effect on general economic activity; or
(5) severely affects state, local, and private sector capabilities to begin and sustain response activities.