tolmutüvi

Tolmutüvi is an Estonian term that translates to "dust storm" or "dust devil" in English. It refers to a common meteorological phenomenon, particularly prevalent in arid or semi-arid regions. A dust devil is a rotating column of air, typically small and weak, that forms when the ground is heated by the sun, causing the air above it to rise rapidly. As the air rises, it creates an updraft that can pick up dust, sand, and debris from the surface, making the vortex visible.

These phenomena are distinct from tornadoes, which form from thunderstorms and are generally much larger and more destructive. Tolmutüvi are usually transient, lasting from a few seconds to several minutes, and their intensity can vary. They are often observed on clear, hot, and calm days when there is sufficient surface heating to create the necessary atmospheric instability. While typically not posing a significant threat, larger dust devils can cause minor damage or create visibility issues. The term "tolmutüvi" specifically emphasizes the visible dust component of the swirling air.