WSMV has co-channel interference from WFXL, also on channel 10. WSMV must be at least 16 dB stronger than WFXL to avoid interference, but it is only 1.3 dB stronger on the report. However, WFXL is in a different direction, so the antenna pattern has a good chance of giving you the margin that you need if the antenna is aimed at WSMV.
http://www.winegard.com/kbase/uploads/HD7698P.pdf
http://www.hdtvprimer.com/ANTENNAS/W7698.html
If the antenna pattern isn't sufficient to attenuate WFXL, you can use a building or wire wesh screen to block the signal from 173 degrees.
You will need a preamp for your antenna.