Outflow boundary a downburst. "Gustnadoes", short-lived vertical circulations near ground level, can be spawned by outflow boundaries. Gust fronts create low-level wind shear which can be hazardous to planes when they takeoff or land. Flying insects are swept along by the prevailing winds. As such, fine line patterns within weather radar imagery, associated with converging winds, are dominated by insect returns. At the surface, clouds of dust can be raised by outflow boundaries. If squall lines form over arid regions, a duststorm known as a haboob can result from the high winds picking up dust in their wake from the desert floor.
Climatic regions of India The region towards the North, East and South of the Tropical Desert zone running from Southern Punjab, Haryana and, Western Uttar Pradesh to Gird and Malwa regions in Western Madhya Pradesh and eastern fringes of Rajasthan and from there onwards to the Central Gujarat and Kathiawar regions of Gujarat state experience this climate type. India's capital city Delhi lies in this climatic zone. This climate is a transitional climate falling between tropical desert and humid sub-tropical zone, with temperatures which are less extreme than the desert climate. The annual rainfall is between 30 and 65 cm but is very unreliable