Dry wind that sometimes blows over the great plains

The gusts can also reach up to 80 mph (128 km/h) as the winds come down the mountains and pass over the plains. When the warm, dry, fast-moving Chinook winds pass over snow-covered areas, the snow often vaporizes before it has a chance to melt, according to the U.S. Geological Survey.

Drought resistance because they are close to a lot of supplys 

Adrought is taking place