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

🇺🇸 N8724J - BOEING 737-8 - Southwest Airlines SWA1327/WN1327, Dallas Love Field (DAL) to Chicago Midway (MDW) - 4.9 mi away @ 39500 ft, heading NNE at 578 mph. Spotted 60x before. [07:41:13 PM CST] #AC00B1 #N8724J #B38M #SOUTHWEST #SWA1327 #WN1327 #ADSB #ADSBbot