A friend is the local Meteorologist in Charge for the National Weather Service forecast office. He was born & raised in one of those towns in southern IL that was hit by this tornado. He has done some historical research on the track and the damage levels, using modern techniques. He was back in his hometown this past weekend for the centennial recognition of the storm & to present his research findings for interested/affected communities. He made an abbreviated presentation of his work for our local storm spotters group a couple of years ago & it was fascinating, if you’re into understanding the powerful forces behind our weather.
I hunted down the vid of that event, but the audio was so awful that I gave up on it quickly. Very unfortunate - I was really looking forward to watching it.
It’s curious that the two longest track, very violent tornadoes in US (recorded) history, were so close together.