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

🇺🇸 N8848Q - Boeing 737MAX 8 - Southwest Airlines SWA1728/WN1728, Phoenix Sky Harbor (PHX) to Indianapolis (IND) - 4.1 mi away @ 33950 ft, heading E at 555 mph. Spotted 54x before! [08:10:32 PM CDT] #AC3030 #N8848Q #B38M #SOUTHWEST #SWA1728 #WN1728 #ADSB #ADSBbot