Evil wind

"... one day an abnormally hot wind rose from the south and blew with great violence for three days. This was taken as a serious omen of coming disaster. The idea that a sudden violent wind, stirred by an evil jinn foreshadows a catastrophe, is implicitly believed by the Siwans and by all Berbrers..."

"... there is a certain rock, said to be sacred to the south wind, which it is profane for a human hand to touch, as the south wind immediately rolls forwards clouds of sand"