Rather narrow dark stripes in WV images, representing dry sinking air along the cyclonic side of a jet stream.
A preferred area for the initial development of deep convection is the maximum of warm air in the warm sector in front of Cold Fronts.
PV anomalies (stratospheric values of PV low down in the troposphere) are preferred areas for the development of Cbs and Mesoscale Convective Systems.
Unstructured cloud fields developing in areas of pronounced convergence.
Small scale lines of convective cells as a result of confluence in a land/sea system.
Lines of convective cells in advance of a Cold Front cloud band developing according to a diurnal cycle.
Development of convective cells and Cbs over mountain chains through confluence within a diurnal cycle.
