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

🇺🇸 N8552Z - Boeing 737NG 800/W - Southwest Airlines SWA4054/WN4054, Phoenix Sky Harbor (PHX) to Chicago Midway (MDW) - 4.1 mi away @ 32800 ft, heading NE at 564 mph. Spotted 95x before! [09:45:04 PM CDT] #ABBCA1 #N8552Z #B738 #SOUTHWEST #SWA4054 #WN4054 #ADSB #ADSBbot