Tex. Gov't Code § 418.173 : GOVERNMENT CODE — EXECUTIVE BRANCH — LAW ENFORCEMENT AND PUBLIC PROTECTION — EMERGENCY MANAGEMENT — MISCELLANEOUS PROVISIONS — Penalty for Violation of Emergency Management Plan

(a) A state, local, or interjurisdictional emergency management plan may provide that failure to comply with the plan or with a rule, order, or ordinance adopted under the plan is an offense.
(b) The plan may prescribe a punishment for the offense but may not prescribe a fine that exceeds $1,000 or confinement in jail for a term that exceeds 180 days.

Tex. Gov't. Code § 418.173

Acts 1987, 70th Leg., ch. 147, Sec. 1, eff. 9/1/1987.