At least three people were killed in a snowstorm in Alabama, the National Weather Service's local office said in a tweet.
Previously, three people died in Louisiana and one in Texas. The snowstorm is raging for a second day.
"We have now confirmed 3 fatalities near Carrollton in Pickens County" the weather service said and warned the people to take the warnings seriously.
As heavy rain has swept southern Turkey, at least two people were killed in rain-related incidents on Jan. 7.
Weather conditions in the lower parts of the mountains are good for tourism today, the Mountain Rescue Service with the Bulgarian Red Cross told Focus News Agency.
In the higher parts, over 2,300 m, there are snow drifts. Temperatures are below freezing - between -3C and -10C. The weather is clear and calm.
Facilities at most resorts are in operation.