In my eyes this is not Anaprop that we are seeing, anaprop is exactly as it says in this description reflectivity that shows up on radar that isn't precip, anaprop doesn't move with the wind, it stays still, this is precip on the radar, its just evaporating before it gets to the ground in the very dry air.
ANAPROP - ANomAlous PROPagation - when radar microwaves are refraction by things like inversions down to the ground, and are then reflected back to the dish - as far as the radar is concerned, something is there, and so it displays it as a return, but it is not precipitation !