As Tropical Storm Cristobal continued to intensify as it slowly moved northward east of the Bahamas a NOAA P-3 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 Cristobal sampled from the tail Doppler radar on the P-3 aircraft during the early morning of 25 August 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 around Cristobal. Also plotted on each analysis are the locations of dropsondes deployed by the P-3 (plotted using standard station symbols). These analyses show that Cristobal still had a very asymmetric distribution of precipitation at all altitudes, with the bulk of the precipitation surrounding the center and extending primarily in the southeastern semi-circle of the storm. There is indication of a circulation center at 1- and 3-km altitudes, with stronger winds 75-80 km east-southeast of the circulation center at 1-km altitude, and extending to 100-125 km to the east-southeast of the center at 3-6 km altitude. From 1-3 km altitude the circulation center is tilted 15-20 km toward the east-southeast indicative of slightly weaker westerly shear of the horizontal wind since the last mission.
All the Tropical Storm Cristobal radar composites at 0.5-km height resolution are available at http://www.aoml.noaa.gov/hrd/Storm_pages/cristobal2014/radar.html