February 1
- 1955 – An F3 tornado destroyed a plantation school near Commerce, Mississippi and destroyed 45 homes, killing 20 people and injuring 141. An F2 tornado killed 3 people and injured 25 near Olive Branch, Mississippi. Even though well-defined funnels were sighted, heavy objects (including a car) were carried long distances, and books were carried for miles; these events were never officially recorded as tornadoes.
- 2007 – The Enhanced Fujita scale went into effect in the United States, replacing the older Fujita scale.