Single- and dual-Doppler measurements collected within two utility-scale wind farms are presented. Various complex flow features are discussed, including detailed analyses of turbine wakes, and intermittent gust propagation. The data have been collected using innovative mobile Doppler radar systems, which allow for large observational footprints (equaling ∼15- 30 km2 in the presented analyses) while maintaining enhanced spatial resolution. The employed single-Doppler radar scanning strategies also provide high temporal resolution "line-of-sight" measurements with revisit times of only a few seconds, allowing for the assessment of complex flow evolution and wake variability. The presented dual-Doppler syntheses construct three-dimensional fields of the horizontal wind speed and direction with a revisit time of roughly one minute. The employed radar technologies, deployment schemes, scanning strategies, and subsequent analysis methodologies offer the potential to contribute to the validation of current wake modeling efforts, improvement of current wind farm design and layout practices, and enhancement of wind farm operation.