For Information on Missouri tornadoes, please see the Earth Science-Climate guide http://libguides.sbuniv.edu/c.php?g=113770&p=740647#s-lg-box-wrapper-2579248
Geologic map of Missouri primary rock types. Based on data from the Missouri Spatial Data Information Service. Created by Kbh3rd, GFDL. Attribution-ShareAlike 3.0 Unported