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According to the US National Weather Service, there is a difference between a Dust Storm and a Haboob.

• Dust storm — the general phenomenon: strong winds lift dust and sand, cutting visibility. NWS issues a Dust Storm Warning when blowing dust drops visibility to ¼ mile or less (winds are usually ≥ 25 mph).

• Haboob — a specific type of dust storm driven by thunderstorm outflow (gust front/downburst) that creates a fast-moving “wall” of dust, most common in the Southwest U.S.