The CSU-CHILL radar was operating to collect a series of end-of-the-STEPS-project calibrations. Around 1800 MDT an area of intensifying convective echoes approached the radar site from the west. The NLDN display showed that a fair amount of positive polarity lightning was being produced by this echo system. Visually, these echoes looked remarkably similar to the system that had passed the area 24 hours earlier. Radar operations were started in response to a radio request from LMA. The echo system evolved into an active N-S line as it moved into western Kansas. Folded outbound velocities were evident in much of the leading edge outflow area. The retreating line was scanned with RHI volumes lasting about 5 minutes, followed by about 1.5 minutes of low elevation angle 360 degree PPIs. Radar operations ended near 2130 MDT when the leading convective line moved out of range to the east. Very frequent, extensive lightning activity was observed from the CSU-CHILL site after dark.