Plain English Meaning

Short, sharp jumps in wind strength on top of the steady wind. The wind isn't smooth -- it surges and eases, sometimes from slightly different directions, in quick bursts.

Full Definition

Sudden, brief increases in wind speed above the prevailing average wind, typically lasting seconds and varying in both speed and direction. Gusts are reported when the peak wind speed exceeds the average wind by at least 10 knots.

Context Anchor

Encountered in weather reports, pilot reports, and landing discussions, especially when planning an approach in turbulent air.

Derivation

Gust' comes from the Old Norse 'gustr,' meaning a sudden blast of wind. The original sense -- a quick, forceful burst -- is exactly the aviation meaning.

Why Pilots Care

Uncorrected gusts can produce sudden or changes on , increasing the chance of a or loss of .