I knew I recalled it having happened before in the recent past. On Wednesday, February 10th, 2010, the city of King, North Carolina declaired a “state of emergency”.
http://www.ammoland.com/2010/02/10/gun-rights-suspended-again/
http://www.wxii12.com/news/22487153/detail.html
“By N.C. law, statute 14-288.7 automatically went into effect. And that law which goes into effect when there’s a state of emergency prohibits the transportation, purchase sale and possession of firearms other than on one’s own premises.”