Narrative:

I was working local and had cleared aircraft X to land runway xx. On approximately; a 1 mile final aircraft X advised me that they were going around. I asked aircraft X if they wanted to cancel and stay in the pattern or go back to center. They said they would cancel and stay in the pattern. I then told aircraft X 'when able; turn left and make left traffic runway xx - maintain VFR.' aircraft X read back 'left traffic; VFR.' approximately 1/2 mile off the departure end of runway xx aircraft X was advised of traffic 4 miles south descending out of 048 and again told them to make left traffic. I look to see what my other traffic was doing then took a quick glance at the radar. All at the same time I went to look for aircraft X and aircraft Y out the window while I was issuing instructions to separate the two aircraft because I had noticed that aircraft X had drifted to the right of the centerline. Almost at the same time both aircraft advised that they were responding to RA's. At this time I said 'oh crap;' although bad timing it was because my glasses fogged up so I could not see anything and not for what was going on out the window. My glasses were fogging up all morning due to my covid mask.after both aircraft passed each other aircraft X was given instructions that his altitude was at his discretion and that there was additional traffic 7 miles ahead moving ssw. Aircraft X then started their turn for left traffic and were given a clearance to land when they were at midfield. After landing; ground control asked aircraft X to call the tower so we could collect the information needed to fill out the report.I don't feel that there is a need to change policy or procedures. I do feel there is a need; especially me; to better follow the procedures; SOP's and policies already in place.

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Original NASA ASRS Text

Title: Local Controller reported an airborne conflict between two air carriers.

Narrative: I was working Local and had cleared Aircraft X to land Runway XX. On approximately; a 1 mile final Aircraft X advised me that they were going around. I asked Aircraft X if they wanted to cancel and stay in the pattern or go back to Center. They said they would cancel and stay in the pattern. I then told Aircraft X 'when able; turn left and make left traffic Runway XX - maintain VFR.' Aircraft X read back 'left traffic; VFR.' Approximately 1/2 mile off the departure end of Runway XX Aircraft X was advised of traffic 4 miles south descending out of 048 and again told them to make left traffic. I look to see what my other traffic was doing then took a quick glance at the radar. All at the same time I went to look for Aircraft X and Aircraft Y out the window while I was issuing instructions to separate the two aircraft because I had noticed that Aircraft X had drifted to the right of the centerline. Almost at the same time both aircraft advised that they were responding to RA's. At this time I said 'Oh CRAP;' although bad timing it was because my glasses fogged up so I could not see anything and not for what was going on out the window. My glasses were fogging up all morning due to my COVID mask.After both aircraft passed each other Aircraft X was given instructions that his altitude was at his discretion and that there was additional traffic 7 miles ahead moving SSW. Aircraft X then started their turn for left traffic and were given a clearance to land when they were at midfield. After landing; Ground Control asked Aircraft X to call the tower so we could collect the information needed to fill out the report.I don't feel that there is a need to change policy or procedures. I do feel there is a need; especially me; to better follow the procedures; SOP's and policies already in place.

Data retrieved from NASA's ASRS site and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.