The paper presents quantitative millimeter wave Doppler radar observations of radar reflectivity and air vertical velocity inside shallow cumuli whose vertical development is restricted by a capping inversion layer. The maximum observed radar reflectivity is -34 to -30 dBZ, which is equivalent to a cloud liquid water content of 0.1 to 0.25 g/m3 depending on cloud droplet size. The main updraft region, which coincides roughly with the maximum reflectivity region, occupies the center of the cloud and extends throughout the radar-visible cloud depth. Downdrafts exhibit more complex structure and are found on the cloud edges. ¿American Geophysical Union 1987