They are known by many names: Haboob, Simum, Black
Blizzards. A solid wall of dust almost a mile high, moving whole sand
dunes and bringing Biblical darkness to the huge areas of the world.
Scorching hot winds (up to 40 degrees Celsius) blowing the sand around
with hurricane speeds... What seems extreme to us is actually a common
occurrence in Africa and the Middle East. The similar sand-saturated
hurricane-speed storms over Mediterranian are called Sirocco, Yugo and
Ghibli. The dust (or desert sand) particles become airborne and held in
suspension, creating a moving front. The convection of cold air over the
heated ground maintains the storm and keeps the dust rolling.
See one such storm coming into the Israeli Negev desert from Sinai (advancing with the speed of appr. 40 mph). According to the photographer Eviathar ben Zedeff (link), the sand wall is over 4,000 ft high:
Sand Storm in Khartoum, Sudan:
Dust covers Astana, the new capital of Kazakhstan:
Dust covers Astana, the new capital of Kazakhstan |
Dust covers Astana, the new capital of Kazakhstan |
Storm in Phoenix, Arizona, USA |
The lamplighters brave the dust storm in Nevada desert |
Cloud Front Australian Outback |
Source : http://www.funonthenet.in
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