Initialism
- (weather) A rating of 4 on the Enhanced Fujita Scale
MLA Style
"ef4." YourDictionary, n.d. Web. 22 January 2019. <https://www.yourdictionary.com/EF4>.
APA Style
ef4. (n.d.). Retrieved January 22nd, 2019, from https://www.yourdictionary.com/EF4