15* years.
Philadelphia
New Wren
Hackleburg
Cordova
Smithville
Flat Rock
Tuscaloosa
Rainsville
Ohatchee
Ringgold
Barnesville
Cullman
Bridgeport
Haleyville
Eoline
Enterprise
Chilhowee Lake
New Harmony
Lake Martin
Pine Log
Lake Burton
Fun fact: The Huntland, TN EF3 has officially been added to the DAT (back in 2024, actually!) and is listed as a separate tornado on Wikipedia. Path length of 16.30 miles. Hackleburg tornado is 102.3 miles and apparently has had the death count corrected to 71.
Also on this day, the Vilonia, AR EF5 (I REFUSE to call it an EF4) in 2014, the Marietta, OK EF4 in 2024, and a few other significant tornado events I can't quite recall now.
TBA: a lot of videos and other media about all the major 4/27 events, especially 2011's.