It could be to an extent but this whole region is in some level of drought, so it would be highly unlikely a moist environment exists on the ground outside of what the storm has produced. I think more likely this is a function of an extremely unstable environment, low shear, and proximity to gulf moisture. This area has been known historically for producing similar occurrences of systems maintaining longer than expected so there might be some regional geography/proximity to the gulf that factors in for adequate moisture transport with minimal elevation to disrupt a surface low. Very very impressive storm, did not think we’d still be talking about this system much today