The primary aim of this paper concentrates on the probable occurrences and modeling of tornadoes; that is, probability of a tornado in the United States on a given day of the year, outlines of seasons for tornadoes in the United States and probable temperature and pressures ranges associated with tornado force winds. We were successful in determining the probable dates and times of tornado activities. Our goal is to re-evaluate tornado indexes and eventually determine the relationship between wind speed, temperature and pressure within tornadoes; this knowing will lead to historical breakthroughs in how we see tornadoes and predict tornadoes.