The GRIP High Altitude Imaging Wind and Rain Airborne Profiler (HIWRAP) dataset was collected by the High-Altitude Imaging Wind and Rain Airborne Profiler (HIWRAP), which is a dual-frequency (Ka- and Ku-band) conical scan system, configured with a nadir viewing antenna on the Global Hawk aircraft. The HIWRAP instrument provides calibrated reflectivity and unfolded Doppler velocity. These dual-frequency radar measurements have frequencies similar to that of the GPM. These data are from the Genesis and Rapid Intensification Processes (GRIP) experiment from September 16, 2010 through September 24, 2010. The major goal was to better understand how tropical storms form and develop into major hurricanes. NASA used the DC-8 aircraft, the WB-57 aircraft and the Global Hawk Unmanned Airborne System (UAS), configured with a suite of in situ and remote sensing instruments that were used to observe and characterize the lifecycle of hurricanes. HIWRAP flew on the Global Hawk aircraft mainly over the Gulf of America.