What is dead man walking tornado?

"Dead Man Walking" isn't a specific tornado event recognized widely in meteorological records or popular media. It's possible that the phrase could be a colloquial or local name for a specific tornado, or it might be metaphorically used in literature, music, or art.

If it is a specific event you are interested in, such as a particular tornado occurrence, you might need to provide more details like the location and date so I can assist you properly. If "Dead Man Walking" refers to a creative work or a concept, please provide additional context.