This was a pretty famous chase day, where a supercell formed along an effective triple point in SC OK and pretty much immediately dropped a photogenic EF4 tornado while the storm was still pretty LP. When a storm does something like this, its because there is a really good combination of shear/instability along with what is most likely a low level boundary adding to the spin in the lower atmosphere. When all of those ingredients combine, the odds go way up of a photogenic tornado happening early on in the storm’s lifecycle. Here’s a full documentation of that chase day.