December 31
- 1947 – A tornado outbreak struck the Southern United States, resulting in 20 fatalities and over 250 injuries. The worst impacts were from an F4 tornado or tornado family that killed 18 people and injured 225 in northeastern Louisiana and southern Arkansas, including 14 deaths in the devastation of Cotton Valley, Louisiana.
- 2010 – Tornadic activity occurred across Arkansas, Oklahoma, Missouri, Illinois, and Mississippi, with 28 tornadoes resulting in nine deaths and numerous injuries. Five tornadoes were rated EF3, with the towns of Cincinnati, Arkansas; Fenton, Missouri; and Lake Petersburg, Illinois sustaining significant damage. Just after midnight on January 1, seven additional tornadoes struck Mississippi, including two rated EF3.