The Nor'west Arch is a meteorological phenomenon that occurs primarily in New Zealand, particularly in the South Island. It refers to a specific type of weather pattern characterized by a distinctive arching of the moist air that travels from the Tasman Sea over the Southern Alps. As the warm, moist air approaches the Alps, it is forced upwards, which can lead to heavy rainfall on the windward side of the mountains.
New to topics? Read the docs here!