Doppler radar quick-looks from 2:00 AM P-3 flight into Tropical Storm Arthur, 2 July 2014

As Tropical Storm Arthur developed just east of Cape Canaveral, Florida (the Florida coast is visible as black line in the left of the images) a NOAA P-3 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 during the early morning of July 2, 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 Arthur. Also plotted on each analysis are the locations of dropsondes deployed by the P-3 (plotted using standard station symbols). These analyses show that Arthur had an asymmetric distribution of precipitation at all altitudes, with the bulk of the precipitation surrounding the center and extending toward  the south and east. There is indication of a clear circulation center at all altitudes, with stronger winds 30-35 km east of the circulation center. From 1-6 km altitude, the circulation center is only slightly tilted toward the southeast indicative of slight west-northwesterly 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