18.104.22.168. Initiation of convection – how thunderstorms start (daytime heating, fronts, etc)
Convergence of surface winds may also lead to initiation of convection. The air in the convergence zone is forced upwards. The convergence zone also acts as a frontal boundary if two airmasses are of significantly different temperatures and/or humidities. Additionally, convergence zones are typically areas of strong moisture pooling; increased moisture increases convective instability, lowering the lifted condensation level and consequently also the level of free convection.
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