Convergence zone usually refers to a region in the atmosphere where two prevailing flows meet and interact, usually resulting in distinctive weather conditions.

An example of a convergence zone is the Intertropical Convergence Zone, a low pressure area which girdles the Earth at the Equator. Another example is the South Pacific convergence zone that extends from the western Pacific Ocean toward French Polynesia. The thunderstorms of the Intertropical Convergence Zone form a line across the eastern Pacific Ocean. ... A low pressure area, or a low for short, is a region where the atmospheric pressure is lowest with relation to the surrounding area. ... Earth is the third planet from the Sun. ... The equator is an imaginary circle drawn around a planet (or other astronomical object) at a distance halfway between the poles. ... The South Pacific Convergence Zone (SPCZ) is a band of low-level convergence, cloudiness and precipitation extending from the west Pacific warm pool south-eastwards towards French Polynesia. ...

A smaller example of a convergence zone occurs in the Puget Sound region, known as the Puget Sound Convergence Zone. This happens when winds in the upper atmosphere are split by the Olympic Mountains. The winds then converge beyond the mountains, producing convection uplift that results in the development of clouds and even stormy weather. Puget Sound Puget Sound is an arm (sound) of the Pacific Ocean in the Pacific Northwest of the United States. ... The Olympic Mountains The Olympic Mountains are a mountain range on the Olympic Peninsula of western Washington in the United States. ...