Haboob In Phoenix

Now here is a weather phenomenon that i had never heard of until today. Raging across Phoenix yesterday afternoon 69 MPH winds picked up dirt and dust and pushed a cloud 60 miles wide across Phoenix.

Here is a definition of Haboob from Wikipedia.

A haboob (Arabic هبوب) is a type of intense sandstorm commonly observed in arid regions throughout the world. They have been observed in the Sahara desert (typically Sudan), as well as across the Arabian Peninsula, throughout Kuwait, and in the most arid regions of Iraq.^[1] African haboobs result from the northward summer shift of the inter-tropical front into North Africa, bringing moisture from the Gulf of Guinea. Haboob winds in the Arabian Peninsula, Iraq and Kuwait are frequently created by the collapse of a thunderstorm. The arid and semiarid regions of North America – in fact any dryland region – may experience haboobs. In the USA, they are frequently observed in the deserts of Arizona, including Yuma and Phoenix^[2][3], as well as New Mexico and Texas ^[4]. During thunderstorm formation, winds move in a direction opposite to the storm's travel, and they will move from all directions into the thunderstorm. When the storm collapses and begins to release precipitation, wind directions reverse, gusting outward from the storm and generally gusting the strongest in the direction of the storm's travel.^[5][6][7]

^{and a selection of pictures from facebook.}