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

🇺🇸 N8633A - Boeing 737NG 8H4/W - Southwest Airlines SWA150/WN150 (BWI-SAN-SJC) - 4.5 mi away @ 38050 ft, heading W at 516 mph. Spotted 89x before! [07:20:25 AM CDT] #ABDCBE #N8633A #B738 #SOUTHWEST #SWA150 #WN150 #ADSB #ADSBbot