Weather theoryQuestion 322 of 934

What is the only visible clue of a microburst when there is no rain at the surface?

  1. A roll cloud ahead of the storm
  2. A ring of blowing dust
  3. A wall of fog
  4. A funnel cloud
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Correct answer: A ring of blowing dust

A rain shaft with virga at the cloud base and a ring of blowing dust may be the only signs.

Source: Pilot's Handbook of Aeronautical Knowledge (FAA-H-8083-25C), Chapter 12: Weather Theory — Low-Level Wind Shear, page 295

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Questions last reviewed: 18 October 2026