This report documents the development and testing of a viable aircraft hazard detection scheme which operates as well employing conventional radar data as it does employing Doppler radar data. The detection scheme was evaluated using aircraft penetrations into the most turbulent regions of hail storms. These regions are of interest when verifying that turbulence can be detected but are not optimum for evaluating the detection technique under realistic operating conditions. If, in the latter case, higher false alarm rates can be expected, more development will be necessary to utilize more effectively the available information before the hazard detection procedure can be incorporated into an air traffic control environment. The recommended program to develop the automatic hazard detection system include: refine the cell and cluster detection algorithms to reduce the effect of the statistical uncertainties in the estimation of velocity perturbations; refine the cell significance algorithms using cell age location in the development pattern, apparent vertical transport of horizontal momentum and similar parameters to provide and indication of the intensity of the turbulence; and develop a graphical display of the cell, cluster and contour data that can be provided both to meteorologists for the development of short range forecasts.