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

🇺🇸 N8942L - BOEING 737 MAX 8 - SOUTHWEST AIRLINES CO SWA4619/WN4619, Harry Reid (LAS) to Indianapolis (IND) - 4.2 mi away @ 33775 ft, heading E at 605 mph. Spotted 19x before! [12:52:16 PM CST] #AC56D9 #N8942L #B38M #SWA4619 #WN4619 #ADSB #ADSBbot