Doppler radar quick-looks from 2:00 PM P-3 flight into Hurricane Bertha, 4 August 2014

As Hurricane Bertha passed east of Cape Canaveral, FL 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 Bertha sampled from the tail Doppler radar on the P-3 aircraft during the afternoon of 4 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 Bertha. Also plotted on each analysis are the locations of dropsondes deployed by the P-3 (plotted using standard station symbols). These analyses show that while Bertha had become a hurricane it’s structure looked worse than the flight before with a very asymmetric distribution of precipitation at all altitudes, with the bulk of the precipitation south and east of the center. There is indication of a circulation center at all altitudes, with winds of hurricane strength 25-30 km east-southeast of the circulation center, and a secondary wind maximum 80-90 km southeast of the center. From 1-6 km altitude the circulations center is tilted 10-15 km toward the east-southeast indicative of increasing westerly shear returning.

All the Bertha radar composites at 0.5-km height resolution are available at