Contents.Description During thunderstorm formation, winds move in a direction opposite to the storm's travel, and they 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.When this downdraft of cold air, or, reaches the ground, it blows dry, loose silt and clay (collectively, dust) up from the desert, creating a wall of sediment that precedes the storm cloud. This wall of dust can be up to 100 km (62 mi) wide and several kilometers in elevation. At their strongest, haboob winds often travel at 35–100 km/h (22–62 mph), and they may approach with little or no warning. Often rain does not appear at ground level as it evaporates in the hot, dry air (a phenomenon known as ). The evaporation cools the rushing air even further and accelerates it. Occasionally, when the rain does persist, it can contain a considerable quantity of dust.
Severe cases are called mud storms. Eye and respiratory system protection is advisable for anyone who must be outside during a haboob. Moving to shelter is highly advised during a strong event.Occurrence Middle East Haboobs have been observed in the (typically, where they were named and described), as well as across the, throughout, and in the most arid regions of. Haboob in the Arabian Peninsula, Iraq, Kuwait are frequently created by the collapse of a.North Africa African haboobs result from the northward summer shift of the inter-tropical front into, bringing moisture from the.Australia Haboobs in Australia may be frequently associated with. The deserts of, especially near, are particularly prone to haboobs, with sand and debris reaching several kilometers into the sky and leaving up to 30 centimetres (1 ft) of sand in the haboob's path.North America.
See also:As with haboobs in the Middle East, haboob occurrences in North America are often created by the collapse of a thunderstorm. This is a local or mesoscale event, and at times of extreme drought they can originate in agricultural regions. Some of the most famous dust storms of the Dust Bowl and similar conditions later were in fact synoptic scale events typically generated by a strong cold frontal passage, with 14 April 1935, 9–11 May 1934, 19 February 1954, and 11 November 1911 being particularly vivid examples.The arid and semiarid regions of —in fact, any dry region—may experience haboobs. In North America, the most common terms for these events are either or sandstorm. In the U.S., they frequently occur in the deserts of, including around the cities of and; in, including; in eastern, and in.
They also sometimes occur in the, of, almost always leading to an impact with the city of. If the storms are strong enough, they can reach as far east as and, in.Mars have been compared to haboobs on Earth. Gallery. Farquharson, J. 'Haboobs and instability in the sudan'. Quarterly Journal of the Royal Meteorological Society.
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Dust Storms
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S.; Pritchard, J. 'An American Haboob'. Bulletin of the American Meteorological Society.
53 (10): 930–935. Idso, Carolyn W. 'Haboobs in Arizona'. 28 (4): 154–155. Chen, W.; Fryrear, D. 'Sedimentary characteristics of a haboob dust storm'. Atmospheric Research.
61 (1): 75–85. Boyle, R. 'Everything About Mars Is The Worst.' Retrieved 9 March 2017, fromExternal links Wikimedia Commons has media related to. @ HikeArizona.COM. on.