RFD is a mail service in rural areas. RFD may refer to: Contents. Based on early radar analyses and visual storm observations, Lemon and Doswell III  identified key stormscale structures in tornadic supercell storms: a. Looking for the definition of RFD? Find out what is the full meaning of RFD on Abbreviations. What is RFD ? There may be more than one meaning of RFD , so check it out all meanings of RFD one by one.