As Hurricane Arthur approached landfall just south of Wilmington, NC (the North Carolina coast is visible as black line in the upper portion of the images) a NOAA P-3 and a G-IV mission collected airborne Doppler radar data to use in initializing and evaluating model guidance. Included here you see images of the horizontal winds within 300 km of Arthur sampled from the tail Doppler radar on the P-3 and G-IV aircraft during the afternoon of July 3, 2014. These images are at three altitudes (1 km, 3 km, and 6 km) and are a composite of winds from the P-3 Doppler pattern and G-IV Doppler patterns around Arthur. Also plotted on each analysis are the locations of dropsondes deployed by the P-3 and G-IV (plotted using standard station symbols). These analyses show that Arthur still had a slightly asymmetric distribution of precipitation at all altitudes, with the bulk of the precipitation surrounding the center and extending primarily toward the south and east. There is indication of a clear circulation center at all altitudes, with stronger winds 25-30 km east-southeast of the circulation center, suggesting the storm was entering more into the westerlies. At all altitudes there is a clear indication of a broadening wind maximum southeast of the center. From 1-6 km altitude the circulations center is tilted 15-20 km toward the east indicative of increasing westerly shear.
All the Arthur radar composites at 0.5-km height resolution are available at http://www.aoml.noaa.gov/hrd/Storm_pages/arthur2014/radar.html