Mississippi Code Title 33. Military Affairs § 33-15-31

(a) The governing bodies of the political subdivisions of the state and other agencies designated or appointed by the Governor are authorized and empowered to make, amend, and rescind such orders, rules, and regulations as may be necessary for emergency management purposes and to supplement the carrying out of the provisions of this article, but not inconsistent with any orders, rules and regulations promulgated by the Governor or by any state agency exercising a power delegated to it by him.

(b) All orders, rules, and regulations promulgated by the Governor, the Mississippi Emergency Management Agency or by any political subdivision or other agency authorized by this article to make orders, rules and regulations, shall have the full force and effect of law, when, in the event of issuance by the Governor, or any state agency, a copy thereof is filed in the office of the Secretary of State, or, if promulgated by a political subdivision of the state or agency thereof, when filed in the office of the clerk of the political subdivision or agency promulgating the same. All existing laws, ordinances, rules and regulations inconsistent with the provisions of this article, or of any order, rule, or regulation issued under the authority of this article, shall be suspended during the period of time and to the extent that such conflict, disaster or emergency exists.

(c) In order to attain uniformity so far as practicable throughout the country in measures taken to aid emergency management, all action taken under this article and all orders, rules and regulations made pursuant thereto, shall be taken or made with due consideration to the orders, rules, regulations, actions, recommendations, and requests of federal authorities relevant thereto and, to the extent permitted by law, shall be consistent with such orders, rules, regulations, actions, recommendations and requests.