lee depression A non-frontal depression that develops on the lee side of an upland barrier across the airflow as a result of contraction leading to cyclonic curvature. Dynamic processes are responsible for the low-pressure system rather than wave development along a front. Such depressions are common, for example, in winter on the southern lee side of the Alps.

lee depression Non-frontal depression that develops on the lee side of an upland barrier across the airflow as a result of contraction leading to cyclonic curvature. Dynamic processes are responsible for the low-pressure system rather than wave development along a front. Such depressions are common, for example in winter on the southern lee side of the Alps.