Map of the St. Louis area showing the position and track of the aircraft described in the post.

🇺🇸 N7820L - Boeing 737NG 79P/W - Southwest Airlines SWA3694/WN3694, Chicago Midway (MDW) to William P Hobby (HOU) - 4.7 mi away @ 39350 ft, heading SSW at 527 mph. Spotted 73x before! [09:11:01 PM CDT] #AA9A57 #N7820L #B737 #SOUTHWEST #SWA3694 #WN3694 #ADSB #ADSBbot