As used in this chapter, the following definitions shall apply:
CIVIL EMERGENCY: A. A riot or unlawful assembly characterized by the use of actual force or violence or any threat to use force if accompanied by immediate power to execute such force by three (3) or more persons acting together without authority of law.
B. Any natural disaster or humanmade calamity, including flood, conflagration, cyclone, tornado, earthquake or explosion within the corporate limits of the city resulting in the death or injury of persons or the destruction of property to such an extent that extraordinary measures must be taken to protect the public health, safety and welfare.
C. Any act of war, hostile missile or bomb directed at or near the city.
CURFEW: A prohibition against any person or persons walking, running, loitering, standing or motoring upon any alley, street, highway, public property or vacant premises within the corporate limits of the city during the hours in which a curfew has been imposed, excepting persons officially designated to perform duties with reference to said civil emergency. (1994 Code)