In order to enable the mayor of every city of the second class A effectually to preserve the public peace within the city, all the powers which are devolved by the laws of this Commonwealth upon sheriffs, to prevent and suppress mobs, riots, and unlawful and tumultuous assemblies, are hereby conferred upon him. When the mayor considers that a state of emergency exists, he may issue his proclamation, which shall be in writing and copies of which shall be made available to all news media, and to each member of city council declaring a state of emergency for a period not to exceed five days, unless extended by action of council. In his proclamation he may prohibit, for all or any part of the city in which there is a clear and present danger to life or property through civil disorder:
The proclamation shall describe any restricted area with particularity and shall specify the hours during which such restrictions are to be in effect.
Any person violating such proclamation of emergency shall be guilty of a summary offense and shall, upon conviction, be sentenced to pay a fine not to exceed three hundred dollars ($300) or to undergo imprisonment not to exceed thirty days, or both.
53 P.S. § 30360