Cal. Gov. Code § 8620

During a state of war emergency the Governor shall have complete authority over all agencies of the state government and the right to exercise within the area or regions designated all police power vested in the state by the Constitution and laws of the State of California in order to effectuate the purposes of this chapter. In exercise thereof he shall promulgate, issue, and enforce such orders and regulations as he deems necessary for the protection of life and property, in accordance with the provisions of Section 8567.