Jan. 9 (UPI) -- Winter Storm Cora is bearing down on the southern United States on Thursday evening, bringing a brutal blast of frigid winter air with snow, ice and extreme temperatures, which is cutting a 1,400 mile long swath of potentially dangerous weather from Texas to the Carolinas. Officials have declared states of emergency in Tennessee , Arkansas, Georgia and North Carolina. Thirty-seven counties in Oklahoma and Alabama have emergency declarations in place, some imposed ahead of the