Editing Squall line (section)

====Updrafts====
The leading area of a squall line is composed primarily of multiple updrafts, or singular regions of an [[updraft]], rising from ground level to the highest extensions of the [[troposphere]], condensing water and building a dark, ominous cloud to one with a noticeable overshooting top and anvil (thanks to [[synoptic scale meteorology|synoptic scale]] winds). Because of the chaotic nature of updrafts and [[downdrafts]], pressure perturbations are important. [[Precipitation]] cooled air from downdrafts usually outwardly just above the surface and lifts air into the updrafts unless gushing too far out and cutting off this [[Inflow (meteorology)|inflow]]. Visually this process may take the form of a [[shelf cloud]], often with a turbulent appearance.