noun Meteorology.

  1. an intense, localized downdraft of air that spreads on the ground, causing rapid changes in wind direction and speed; a localized downburst.


  1. another name for downburst

  1. A sudden, violent downdraft of air over a small area (less than 16 sq km or 6.24 sq mi) that lasts at least 25 minutes. Microbursts can cause winds with speeds as high as 270 km (167 mi) per hour. They are difficult to detect and predict with standard weather instruments. They are especially hazardous to airplanes during landing or taking off.

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