Wake low

From Glossary of Meteorology

wake low

  1. (Or wake depression.) In meteorology, a surface low pressure area or mesolow (or the envelope of several low pressure areas) to the rear of a squall line; most commonly found in squall lines with trailing stratiform precipitation regions, in which case the axis of the low is positioned near the back edge of the stratiform rain area.

  2. (Or wake depression.) In fluid dynamics, a low pressure area on the downstream side of an object embedded in a flow.