JOPLIN, Mo. (KMIZ) Friday marks 15 years since a deadly, rain-wrapped tornado plowed into the city of Joplin, killing 161 people and leveling hundreds of homes and businesses. The tornado touched down shortly after 5:30 p.m. as many people were out doing their weekend shopping, or attending Joplin High School graduation at Missouri Southern State. The storm rapidly gained strength after touching down, reaching EF-4 to EF-5 strength in less than …