Dust devil
A small spinning column of dust on a hot day — a brief vortex that lifts loose surface and lets it go.
A dust devil in a dream is the dream's image of a small self-organising disturbance that picks up whatever is loose and travels with it for a little way. Dust devils are not storms; they are local, short, and slightly uncanny. The dream brings the dust devil when something in your life — a sudden flare of feeling, a brief rumour, a flash of inspiration — has spun up out of a hot, flat afternoon, gathered the loose material near it, and is currently moving across the field on its own. A dust devil watched from a distance is the dream affirming that the brief vortex was noted and is letting itself go. A dust devil walked into is the dream noting that you stepped into a small turning that was going to pass on its own and have taken its dust with you.