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

🇺🇸 N8853Q - Boeing 737MAX 8 - Southwest Airlines SWA6486/WN6486, William P Hobby (HOU) to Chicago Midway (MDW) - 4.6 mi away @ 38300 ft, heading NNE at 509 mph. Spotted 60x before! [12:16:43 PM CDT] #AC3338 #N8853Q #B38M #SOUTHWEST #SWA6486 #WN6486 #ADSB #ADSBbot