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Posts tagged Haboob

Dust Storm in Sudan Sends Sand into Chad and Central African Republic

May 13th, 2009 Category: Dust Storms

Chad and Central African Republic - May 12th, 2009

Chad and Central African Republic - May 12th, 2009

Dust originating in Sudan blows southwest into Chad and the Central African Republic. This dust is probably from the same haboob, or dust storm, that has been affecting Sudan, Ethiopia and Eritrea over the last few days (click here for previous articles).

Although the majority of the dust kicked up by the storm seemed to be blowing eastward, towards the Red Sea, wind currents blowing in the opposite direction have also carried the dust to Sudan’s western neighbors.

Dust Storm Moves Towards Red Sea

11.8N 37.2E

May 11th, 2009 Category: Dust Storms

Dust storm in Sudan - May 8th, 2009

Dust storm in Sudan - May 8th, 2009

A large dust storm previously covering northern to central Sudan, moves eastward  over Ethiopia towards Eritrea and the Red Sea. Lake Tana, bright green, can be seen just below the head of the dust cloud.

Such dust storms, or haboobs, are common in this region at this time of year. Haboob winds are frequently created by the collapse of a thunderstorm.

The collapse causes a downdraft of wind, or “downburst”, which reaches the ground and blows upwards dry, loose sand from the desert.

This creates a wall of sediment preceding the storm cloud. Here, the sand is flanked by white clouds on the southeastern side. This wall of sand can be up to 100 km (60 miles) wide and several kilometers in elevation.

Dust Storm over Central and Northern Sudan

May 8th, 2009 Category: Dust Storms

Dust storm in Sudan - May 7th, 2009

Dust storm in Sudan - May 7th, 2009

A large dust storm covers northern to central Sudan, from the bare deserts of the North to where the land merges into dry grasslands and savanna.

The sand almost reaches the border with Egypt, although as can be seen in the full image, the skies over Egypt were clear at the time the image was captured.

Near Khartoum, the capital, air currents give the dust a spiral shape. Khartoum is prone to dust storms, particularly in the summer, called haboobs.

A haboob is a type of intense sandstorm commonly observed in the Sahara desert (typically Sudan), as well as across the Arabian Peninsula, throughout Kuwait, and in the most arid regions of Iraq.

African haboobs result from the northward summer shift of the intertropical front into North Africa, bringing moisture from the Gulf of Guinea.