LowLevelConvergence

Low Level Convergence at the 24th hour for Africa is the graphical representation of the expected magnitude and pattern of horizontal rotation (or the vorticity) of atmosphere around a vertical axis or the vorticity at 850 hPa (1.5km). In northern hemisphere it is typically displayed with warm colors ranging from shades of red (to yellow) indicating positive vorticity (cyclonic rotation), and cool colors shades of green (to blue) indicating negative vorticity (anticyclonic rotation). They are useful tools for identifying areas of high and low vorticity, associated with weather systems such as fronts, lows, and highs etc.