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

🇺🇸 N8724J - Boeing 737MAX 8 - Southwest Airlines SWA3895/WN3895, Chicago Midway (MDW) to Harry Reid (LAS) - 4.5 mi away @ 37675 ft, heading SW at 541 mph. Spotted 52x before! [06:56:01 AM CDT] #AC00B1 #N8724J #B38M #SOUTHWEST #SWA3895 #WN3895 #ADSB #ADSBbot