Sec. 433.001.  PROCLAMATION OF STATE OF EMERGENCY.  On application of the chief executive officer or governing body of a county or municipality during an emergency, the governor may proclaim a state of emergency and designate the area involved.  For the purposes of this section an emergency exists in the following situations:
(1)  a riot or unlawful assembly by three or more persons acting together by use of force or violence;
(2)  if a clear and present danger of the use of violence exists;  or
(3)  a natural or man-made disaster.
Acts 1987, 70th Leg., ch. 147, Sec. 1, eff. Sept. 1, 1987.