The swirling red sands of a haboob.
haboob definition by Webster's New World
Webster's New World College Dictionary Copyright © 2010 by Wiley Publishing, Inc., Cleveland, Ohio. Used by arrangement with John Wiley & Sons, Inc.
a violent sandstorm, as in the Sudan or SW U.S.
haboob definition by American Heritage Dictionary
A penetrating sandstorm or dust storm with violent winds, occurring chiefly in Arabia, North Africa, and India.
Origin: Arabic habūb, strong wind, from habba, to rush, blow; see hbb in Semitic roots.