from the Storm Prediction Center (SPC) data archives
Information on each of the year 2004 killer tornadoes
Information
on each of the year 2003 killer tornadoes
Information
on each of the year 2002 killer tornadoes
Information on each of the year 2001 killer tornadoes
Information on each of the year 2000 killer tornadoes
Information on each of the year 1999 killer tornadoes
Information on each of the year 1998 killer tornadoes
Information on each of the year 1997 killer tornadoes
CONUS = Continental U.S.