The towns and cities 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 chapter, but not inconsistent with any orders, rules or regulations promulgated by the governor or by any state agency exercising a power delegated to it by him or her. (Amended 1989, No. 252 (Adj. Sess.), § 14.)