least 20 reported tornados leaving at least one person dead and 19 injured the most powerful had 150 mile an hour wind that slammed the city of jaksboro northwest of dallas morgan chesky is on the ground for us what do you see? >> reporter: well, from what we are seeing is shock mixed with overwhelming relief because this is all that's left of jaksboro elementary school where hundreds of students and teachers road out this incredible storm, and they were supposed to have a tornado drill later this week that yesterday, proved all too real tonight, devastation in texas. from a string of storms, now striking across the south. >> nobody needs to be on the highway right now. >> reporter: mississippi on high alert after a deadly 24 hours in texas. the twisters shredding homes, tossing cars. >> get inside! >> reporter: leaving many scrambling to take shelter one tornado striking during rush hour monday, crossing a busy