Keywords: St-louis-tornado-20110423 0100 nowrad.gif en RIDGE National NEXRAD Radar Mosaic of St Louis Tornado on at 8 08 PM local CDT April 22 2011 /1 08 UTC April 23 2011-04-22 http //www4 ncdc noaa gov/cgi-win/wwcgi dll wwNexrad~SelectedImage~20110423~0100 NOAA NEXRAD PD-USGov 2011 St Louis tornado Weather maps of the United States April 2011 in the United States |