As Tropical Storm Ingrid developed from Tropical Depression 10 (TD10) in the southern Bay of Campeche (the Mexican coast is visible as black line in bottom and left of the images) a NOAA G-IV mission collected airborne Doppler radar data to use in initializing and evaluating model guidance. Included here you see analyses of the horizontal wind within 300 km of Ingrid’s center sampled by the tail Doppler radar midday on 13 September 2013. These images are composites of the analyses at three altitudes (1 km, 3 km, and 6 km) the G-IV Doppler pattern around TD10 (Ingrid). Also plotted on the each analyses are the locations of dropwindsondes deployed by the G-IV (plotted using standard station symbols). These analyses show that Ingrid had a very asymmetric distribution of precipitation at all altitudes shown, with the bulk of the precipitation to the north and east of the storm center which is in the southwest corner of the Bay of Campeche. There is indication of a very compact circulation at all altitudes shown, with stronger winds 20-25 km northwest of the circulation center. Above 3-km altitude, there is a clear indication that the circulation center is tilted 25-30 km to the north-northeast with increasing altitude, indicative of some southwesterly shear over the storm as it interacts with the trough to the northwest over southern Texas.
All the Ingrid radar composites at 0.5-km height resolution are available at http://www.aoml.noaa.gov/hrd/Storm_pages/ingrid2013/radar.html