The dust plume formed a giant, southward-swooping arc extending from Algeria to Western Sahara. Source points for the plume are not obvious in this image, but dust storms often blow from east to west in this region, sometimes carrying dust over the Atlantic Ocean. Sand seas carpet large parts of Algeria, Mali, and Mauritania, and this dust storm likely picked up additional material as it blew across the Sahara.
Acquired April 22, 2010, this natural-color image shows a dust plume spanning hundreds of kilometers in western Africa. A wall of dust appears to advance toward the southeast in Burkina Faso and Niger.