Haboob Haboob A haboob () is a type of intense dust storm carried on an atmospheric gravity current, also known as a weather front. Haboobs occur regularly in dry land area regions throughout the world. 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 downburst, reaches the ground, it blows dry, loose
Desert whitethroat differences it follows Gloger's rule of pale colour in arid regions. The throat is white, and the rest of the underparts pale greyish-white. Three subspecies are currently recognised, though some authors only accept the first two as distinct. The presumed lesser whitethroat subspecies "halimodendri" and "telengitica" might actually belong to the desert whitethroat, or alternatively might represent hybrid intergrades between, respectively, "S. m. jaxartica" and "S. m. margelanica" and the lesser whitethroat. Desert whitethroat inhabits arid lowland regions from eastern Iran and Turkmenistan eastwards to Xinjiang in central China, breeding in open dry thorn scrub. The breeding range does not