long duration haboob 2

https://wiki-site.win/index.php/How_Maricopa_County_Air_Quality_Affects_Your_Home_After_a_Haboob

A long duration haboob is a massive wall of dust and sand that rolls across the desert for hours, not just minutes. It darkens the sky completely, reducing visibility to near zero, and its sustained winds can bury roads and vehicles under layers of fine sediment, making travel dangerous long after the initial blast passes.