Quick Facts
- Type
- Weather Hazard
- Definition
- A localized, intense downdraft that spreads outward on contact with the groun...
- Used By
- Pilots, ATC
Definition#
A microburst is a small-scale, intense downdraft that, upon reaching the surface, produces damaging divergent winds lasting 5 to 15 minutes. It can be wet (with precipitation) or dry.
Why It Matters Operationally#
Microbursts create rapid performance-changing wind shear. An aircraft on approach may first encounter a headwind (increasing performance) followed by a downdraft and tailwind (rapidly decreasing performance), potentially leading to ground contact.
Related Guides#
- What Is Turbulence?
- Aviation Weather Explained — The Complete Operational Guide
- Air Masses & Fronts in Aviation