This one had plenty of warning for anyone who was seeking it, making the warning actually heard is the hard part. The storm tracked close to 100 miles with a powerful tornado down for most of that time. One issue with this area is that it resides in a radar hole. Weather radars are tilted very slightly to clear obstacles so the further away you are from the site, the higher and less accurate the radar returns are. A historic tornado formed in an area that meteorologists can't see well.