Hurricane Bonnie made landfall near Wilmington, North Carolina, as a Category 2 hurricane on 26 August. There were two HRD missions near the time of landfall. The first flight concentrated on examining the structure of the spiral rainbands and the second flight surveyed the hurricane as it interacted with the coast. During the flights there was a vigorous rainband ~180 km NE of the center with several mesocyclones (as identified on the Morehead City, North Carolina, WSR-88D) that later produced confirmed tornadoes on land. Both NOAA aircraft had to deviate around strong cells in this band, between 1540 and 1830 UTC, and those deviations resulted in small Doppler analysis boxes enclosing some of the mesocyclones. A companion paper (Spratt et al) uses dropsondes and adjacent radiosondes to describe the local environment in which the Bonnie mesocyclones were embedded, and in this paper we will present windfield analyses, from combining WSR-88D and airborne Doppler radar data, that provide the three dimensional structure of the mesocyclones. The Doppler data are too coarse to capture the actual tornadoes, but the parent mesoscale circulations are clearly resolved.
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