This paper outlines a novel approach for obtaining estimates of momentum fluxes for deep precipitating convection. This method relies on data collected by vertically incident profiling Doppler radars but may be applied to aircraft- or space-based radar systems. This work represents a significant step forward toward the evaluation of convective momentum transports across regional scales using data from operational satellite systems (e.g., the Tropical Rainfall Measuring Mission (TRMM) instrument). The new method is demonstrated as convective momentum flux terms $left( overline {u^{prime}w^{prime}} right)$ and $left( overline {v^{prime}w^{prime}} right)$ are estimated for deep convection occurring during the Third Convection and Atmospheric Moisture Experiment (CAMEX-3), which was conducted during August and September 1998. These terms contain the most information on the momentum transported in the updrafts and downdrafts of cumulus convection. Key to the method is that the tilt and orientation of the convective drafts, relative to Earth's surface, are quantified from radar information into perturbation horizontal wind components once an accurate storm motion estimate is provided. For perturbation vertical velocities, the evaluation of drop size diameters from radar reflectivities and the subsequent evaluation of terminal velocities of hydrometeors and draft motions are necessary information toward applying this technique. Doppler velocity measurements from the upward looking Rd-69 Disdromet disdrometer (Joss-Waldvogel disdrometer) calibrated 915 MHz profiler are used to test the procedures for estimating w'. The method is tested against numerically simulated convection using the University of Wisconsin-Nonhydrostatic Modeling System (UW-NMS) mesoscale and cloud-resolving model. The radar-estimated momentum fluxes are found to match in sign and relative magnitude through the depth of the convective clouds studied compared to those obtained from model simulation.