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

🇺🇸 N8938Q - Boeing 737MAX 8 - Southwest Airlines SWA579/WN579, Orlando (MCO) to Chicago O'Hare (ORD) - 4.7 mi away @ 39625 ft, heading NNE at 541 mph. Spotted 10x before! [09:08:09 PM CDT] #AC53F8 #N8938Q #B38M #SOUTHWEST #SWA579 #WN579 #ADSB #ADSBbot