We present analysis of data collected off-shore of Duck, NC that verifies for the first time that streaks in synthetic aperature radar (SAR) images can be caused by atmospheric turbulence of large eddy form, in particular, due to atmospheric roll vortices. We arranged for the simultaneous flight of the NOAA/Oakridge LongEZ aircraft with turbulence-measuring capabilities with a RADARSAT SAR overpass on 5 November 1997. The LongEZ turbulence data shows roll-vortex signatures with scales of 0.5 and 1.5-2.0 km. The SAR image shows streaks aligned close to the wind direction with a dominant scale of 1.5-2.0 km and fine-scale structure with scales of 0.5 km. The coincidence of the SAR and turbulence-data structure shows that atmospheric roll vortices can generate remotely-sensible signatures in SAR imagery. We discuss this data and its possible uses