The National Weather Service Huntsville has upgraded the winter weather advisory for Cullman, Marshall and DeKalb Counties to a winter storm warning until noon Friday.
There is 2-3 inches of snow in parts of this area already and another 2 inches could fall across parts of Winston, Cullman, Blount, Marshall, and Etowah Counties overnight. Roads are already hazardous and will become snowpacked overnight. Travel will become extremely dangerous to impossible.
Here are the current advisories/warnings. Winter storm warnings are in the brighter teal color (travel strongly discouraged). Advisories in blue (travel discouraged).
Winter storm warnings go all the way from the Rio Grande valley of Texas across the Texas Coastal Plain through Central Louisiana and much of Mississippi now into Alabama. Winter weather advisories extend along the northern part of the warning area and across much of Central and South Alabama as well as the mountains of Georgia, North Carolina, the Piedmont of South Carolina and the northern foothills of North Carolina.

