Doppler radar quick-looks from 2:00 PM P-3 and G-IV flights into Hurricane Danny, 22 August 2015

As Hurricane Danny weakened 600 nm east of the Leeward Islands a NOAA P-3 and G-IV mission collected airborne Doppler radar data to use in initializing and evaluating model guidance.

The figure below depicts the aircraft flight track (P-3: yellow line; G-IV: red line) superposed on the real-time lower fuselage radar and visible satellite imagery.

Screen Shot 2015-08-22 at 5.48.48 PMIncluded here you see images of the horizontal winds within 180 km of Danny sampled from the tail Doppler radar on the P-3 and within 350 km of Danny from the G-IV aircraft during the afternoon of 22 August 2015. 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 Danny. 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 Danny’s precipitation distribution was very asymmetric at all altitudes, with the bulk of the precipitation surrounding the center only at 1-km altitude, and covering primarily in the northeastern quadrant of the storm at 3- and 6-km altitude. There is still an indication of a very small but well defined circulation center at 1-km altitude, with strongest winds 15 km north of the circulation center. At 3 and 6 km altitude there are only winds northeast of the center. From 1-6 km altitude the circulation center was tilted to the northeast, with the 6-km center almost 30-40 km northeast of the 1-km center, indicative of strong southwesterly shear of the horizontal wind.

All the Hurricane Danny radar composites at 0.5-km height resolution are available at: http://www.aoml.noaa.gov/hrd/Storm_pages/danny2015/radar.html

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