October 19, 2021
A sandstorm or dust storm is one of the phenomena called lithometeors and occurs when the relative humidity of the air is lower than 80% allowing the suspension of mostly solid but non-aqueous particles in the air. The result can be dry fog, sandstorm (or dust), sand whirlwind (or dust). The dust storm itself is a large mass of dust particles, or sand that is displaced by turbulent and strong winds and raised from the ground to a considerable height. Sometimes these phenomena are caused by dust devils They are more frequent in regions with large amounts of sand and low humidity, such as deserts. Sandstorms are seen in Argentine Patagonia, the great North American plains (1930s), the Middle East, Australia and Central Asia, as well as the Sahara desert.