Climatologists are not good historians. The Dust Bowl of the 30s occurred as a result of several factors. Drought, yes, but primarily as a result of the farming practices adopted in the region when it was settled. The farming methods in use destroyed all of the original topsoil. Enter a drought and high winds, and everything blows away. That is hardly the case in the Southwest Desert. While there is some agriculture, the vast majority of the region is still in its natural state.
The blessing that came with the loss of the topsoil with the wind was that all sorts of arrowheads and Indian tools showed up on the top of the remaining soil.