this very concise area shows the path of the tornado first and foremost. again, this is an aerial photograph taken from the region. notice also at the very beginning of this very distinctive path, this little lines in the grout. tornadoes have been known to dig three-foot trenches, for instance. even rip up asphalt and pavement off the ground. it's clear how strong and how intense the particular storm was. if you go back to the graphics, the national weather service also looks at the trees. the particular layout of the trees. was it in a cirque look patter like a tornado would -- circular pattern like a tornado would form or straight winds? you see it shaved the limbs and trees off of the trees in that particular city. by the way, there were 17 reports of tornadoes. many across illinois and to iowa. there is another chance of severe weather this saturday across parts of the midwest. something we're going to look out for for the texas and