Commercial Fixed Wing
Air Traffic Control Fully Certified
Air Traffic Control Time Certified In Pos 1 (yrs) 1
Situational Awareness
ATC Issue All Types; Conflict Airborne Conflict
Air Traffic Control Issued Advisory / Alert; Flight Crew Took Evasive Action
Airspace Structure; Human Factors
Aircraft X was on a visual approach about 1 NM north of WIGZU.  VFR Aicraft Y was 2 NM east of WIGZU tracking westbound.  I issued the traffic to Aircraft X and let them know where the traffic was; where it was headed; and that the aircraft was not in communication with ATC.  I issued the traffic again when Aircraft X was crossing WIGZU and the VFR aircraft was 1 NM east of WIGZU.  It appeared they must have seen Aircraft X because the VFR aircraft made a sharp northbound turn.  The CA alarm did sound between Aircraft X and Aircraft Y.I recommend a shelf or a key added to AFW Class Delta.  There are many; many instances where VFR aircraft are transitioning at WIGZU; at the same altitude as arrivals or departures; but are not in communication with ATC.
AFW Tower Controller reported an unsafe event where a VFR aircraft is transitioning an arrival path for air carriers outside of Class Delta causing an airborne conflict.