“The Arklatex into mid-South NWS offices are often the busiest when it comes to tornado formation in December. You can almost envision low pressures passing near the Gulf coast and sending warm fronts through these areas looking at the map.”
Here’s where tornadoes typically form in December across the United States – ustornadoes.com
28 Dec 1987, 25 – The Bangor Daily News at Newspapers.com
13 Dec 1953, Page 48 – The Times at Newspapers.com
01 Jan 1948, 1 – The Shreveport Journal at Newspapers.com
04 Jan 1949, Page 1 – The Times at Newspapers.com
The worst tornado outbreak in Kentucky (and the US) occurred in 1974.
05 Apr 1974, 1 – The Paducah Sun at Newspapers.com
Climatologists blamed it on global cooling.
14 Jul 1974, Page 1 – Lincoln Journal Star at Newspapers.com