The 30 May 1998 Spencer, South Dakota, Storm. Part II: Comparison of Observed Damage and Radar-Derived Winds in the TornadoesWurman · Monthly Weather Review2005PDF2.5 MB
The 30 May 1998 Spencer, South Dakota, Storm. Part I: The Structural Evolution and Environment of the TornadoesAlexander · Monthly Weather Review2005PDF3.0 MB
Evolution of Cloud-to-Ground Lightning and Storm Structure in the Spencer, South Dakota, Tornadic Supercell of 30 May 1998Carey · Monthly Weather Review2003PDF1.9 MB