Visibilities of 1/8 mile or less over a widespread area are criteria for a Blowing Dust Advisory.
It blocks the movement eastward movement of low pressure areas (cyclones) at its latitude.
Dust that is raised by the wind to moderate heights above the ground to a degree that horizontal visibility decreases to less than seven miles.
Abnormally dry weather in a region over an extended period sufficient to cause a serious hydrological (water cycle) imbalance in the affected area.
This can cause such problems as crop damage and water-supply shortage.
In Australia, it is described as a violent and very cold wind which is loaded with snow, some of which has been raised from snow covered ground.