A schematic showing (a) the organization of nonprecipitating clouds, (b) the production of cold pools from precipitating cells, (c) the initiation of new, deeper clouds along intersecting cold pool boundaries, and (d) the eventual growth to mesoscale convective systems overnight during the transition from suppressed to active MJO periods. Early, middle, and late suppressed brackets refer to the general time within the suppressed periods when these sequences of events are observed. Credit: Rowe and Houze, 2015, doi:10.1002/2014JD022948