December 17
- 1887 – A fast-moving F3 tornado or tornado family moved across Johnston and Bryan Counties, Oklahoma. It destroyed several houses near Fort Washita and more at a town identified as "Green," which may have been Blue. Six people were killed and 50 were injured.
- 1915 – Five F2 tornadoes touched down in parts of Mississippi and Alabama. One of them killed two people near Giles, Mississippi and likely resulted in an additional six deaths and 75 injuries in rural areas of Kemper County, Mississippi. The same tornado destroyed a home and railroad station in Geiger, Alabama.