Maybe tornados form from dust devils or gustnados **that get pulled into the storm**. Is there some way to look for a correlation between number of tornados on a given day and how conducive conditions are to producing dust devils?

Edit: We all know how severe storms form. But some severe storms produce tornados and some dont. Nobody knows why. I am suggesting that maybe the reason some dont is because conditions at that time were not conducive to producing dust devils. It might be possible to look at the statistics and see if that is the case. If so then that might help forecasters to predict when tornados are more likely to form.

Edit2: A gustnado is a short-lived, shallow surface-based vortex which forms within the downburst emanating from a thunderstorm.[2] The name is a portmanteau by elision of "gust front tornado", as gustnadoes form due to non-tornadic straight-line wind features in the downdraft (outflow), specifically **within the gust front of strong thunderstorms**. As these eddies very rarely connect from the surface to the cloud base, they are very rarely considered as tornadoes.

https://en.wikipedia.org/wiki/Gustnado