Thunderstorm Outflow Boundary

A thunderstorm outflow boundary is a boundary formed when rain-cooled air from a thunderstorm spreads out and moves away from the storm’s edge. This cool, dense air creates a gusty wind front that pushes into the surrounding warmer air, often causing new thunderstorms to develop ahead of it. It acts like a giant cold front driven by the storm’s departing air, and can influence weather patterns by triggering additional storms or changing wind directions and speeds locally.