 Nyora kupfuurira kweiyi ndima - Muna 1983, Marshall akabatwa nekambani inotungamirira yeTexas Haag Engineering uye pakupedzisira akava Injiniya Mukuru uye Meteorologist. PaHague, anofamba zvikuru achiongorora kukuvadzwa nedutu muUnited States. Akaongorora kukuvadzwa kwakaitwa madutu echimvuramabwe, madutu, uye madutu kanopfuura ka10,000. Mamwe emadutu akakurumbira aakaongorora anosanganisira F5s kuJarrell, Texas 1997, Bridge Creek, Oklahoma 1999, Greensburg, Kansas 2007, Alabama 2011, Joplin, Missouri 2011, uye Moore, Oklahoma 2013. Mamwe madutu akakurumbira aakaongorora anosanganisira Alicia muTexas 1983, Hugo muSouth Carolina 1989, Andrew muFlorida 1992, Opal muFlorida 1995, Katrina muMississippi 2005, uye Ike muTexas 2008. Akava Injiniya weProfessional muna 1989. 