Here is the only thing I can think of that might apply is this, but it still appears that it would have to be a measured approach where Wichita Co.'s Judge Gossom would have to officially order an evacuation first.
TITLE 4. EXECUTIVE BRANCH
SUBTITLE B. LAW ENFORCEMENT AND PUBLIC PROTECTION
CHAPTER 418. EMERGENCY MANAGEMENT
SUBCHAPTER A. GENERAL PROVISIONS
Sec. 418.185. MANDATORY EVACUATION.
(a) This section does not apply to a person who is authorized to be in an evacuated area, including a person who returns to the area under a phased reentry plan or credentialing process under Section 418.050.
(b) A county judge or mayor of a municipality who orders the evacuation of an area stricken or threatened by a disaster by order may compel persons who remain in the evacuated area to leave and authorize the use of reasonable force to remove persons from the area.
(c) The governor and a county judge or mayor of a municipality who orders the evacuation of an area stricken or threatened by a disaster by a concurrent order may compel persons who remain in the evacuated area to leave.
(d) A person is civilly liable to a governmental entity, or a nonprofit agency cooperating with a governmental entity, that conducts a rescue on the person’s behalf for the cost of the rescue effort if:
(1) the person knowingly ignored a mandatory evacuation order under this section and:
(A) engaged in an activity or course of action that a reasonable person would not have engaged in; or
(B) failed to take a course of action a reasonable person would have taken;
(2) the person’s actions under Subdivision (1) placed the person or another person in danger; and
(3) a governmental rescue effort was undertaken on the person’s behalf.
(e) An officer or employee of the state or a political subdivision who issues or is working to carry out a mandatory evacuation order under this section is immune from civil liability for any act or omission within the course and scope of the person’s authority under the order.