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

🇺🇸 N8812Q - Boeing 737MAX 8 - Southwest Airlines SWA1593/WN1593, Salt Lake City (SLC) to Baltimore/Washington Thurgood Marshall (BWI) - 4.8 mi away @ 39300 ft, heading ESE at 526 mph. Spotted 91x before! [03:19:57 PM CDT] #AC2439 #N8812Q #B38M #SOUTHWEST #SWA1593 #WN1593 #ADSB #ADSBbot