Analysis of tornado characteristics in the state of São Paulo for the improvement of an automatic alert system - Held, Gerhard [UNESP]; Gomes, Ana Maria [UNESP]; Naccarato, Kleber P.; Pinto Jr., Osmar; De Lima Nascimento, Ernani; Correia, Adelmo Antonio [UNESP]; Marcelino, Isabela P.V.O. (My University, 2005)