The digital hybrid reflectivity (DHR) data provides corresponding rainfall estimates on a polarimetric grid (1° circumferential by 1 km radial resolution). The variable radar rotational scan speed imparts time steps ranging from 4 to 6 min for this study's events. In the DHR product, each individual pixel reflectivity is assigned the respective lowest unobstructed tilt possible (i.e., less than 50% blockage above 150 m above ground level (AGL)). This potentially decreases error in the ground surface rain estimates caused by atmospheric evaporation that occurs when the sampled reflectivity is at a high-elevation AGL. The sampled height had a maximum of around 2 km for WG11 [Fulton et al., 1998]. The Tucson NWS DHR archive started in 2003, but owing to recent dry years over the WGEW, only 8 events were available for the present study (Table 2). Twelve radar pixels completely covered the reduced WG11 area