As Tropical Storm Cristobal continued to intensify north of the Turks and Caicos Islands (the island coast line is visible as black line in the lower left of the G-IV images) a NOAA P-3 and 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 Cristobal sampled from the tail Doppler radar on the P-3 and within 450 km of Cristobal from the G-IV aircraft during the afternoon of 24 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 and G-IV Doppler patterns around Cristobal. 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 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 eastern semi-circle of the storm. There is indication of a circulation center at all altitudes, with stronger winds 90-100 km east-southeast of the circulation center at 1-km altitude, and extending to 190-210 km to the east-northeast of the center at 3-6 km altitude (particularly evident in the G-IV analyses). From 1-6 km altitude the circulation center is tilted 20-25 km toward the east-southeast indicative of weakening 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