Louisville Mayor Craig Greenberg hosts a news conference providing updates on Winter Storm Blair Sunday evening. Here's what to expect overnight.

The extreme weather conditions shuttered businesses and schools, canceled flights and put the city and state of Kentucky under a state of emergency.

Louisville Free Public Library locations have served as warming centers in the past. However, a representative for the library employees' union said the city should not have had staff come in during the storm and ignored a new policy that mandates school closures and other factors be taken into consideration when determining whether to open.