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.
Great Sandy-Tanami desert Great Sandy-Tanami desert The Great Sandy-Tanami desert is a World Wildlife Fund ecoregion of Western Australia extending into the Northern Territory. This very large ecoregion consists of the Little Sandy Desert, Great Sandy Desert, and Tanami Desert Interim Biogeographic Regionalisation for Australia (IBRA) regions. The landscape is desert sands with areas of wooded steppe and shrubby grassland. The Great Sandy Desert is a large area of red desert sand dunes, while the Tanami Desert to the east is flat sand broken up with areas of hills. One prominent landmark in the region is the large sandstone rock Uluru. The climate