A severe local storm comprising a succession of convective cells. The first cell is formed by a powerful updraught of moist air. As the ensuing downdraught stifles this updraught, a new updraught develops to the right of the first. This sequence continues until the surface air cools. See Fovell and Tan (2000) QJ Royal Met. Soc. 126, 562.
Subjects: Meteorology and Climatology.