CB structure and its variation as a function of shear-relative quadrant are then considered for intensifying (IN; intensity increase of at least 20 kt (24 h)-1) and steady-state (SS; intensity remaining between ±10 kt (24 h)-1)TCs. Previous studies using satellite observations show the azimuthal distribution of high altitude reflectivity to be different for IN and SS storms, with the largest differences found in the upshear quadrants. Analysis of CB three dimensional structure shows higher maximum reflectivity values and stronger updrafts occurring at higher altitudes for IN storms in all shear-relative quadrants, with the greatest differences being upshear. The distribution of peak updraft strength for IN storms is more axisymmetric than SS storms due to enhanced weakening of the CBs upshear. Therefore, the presence of CBs upshear can be an added tool for forecasters to determine if a TC will undergo RI.