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

🇺🇸 N447SW - Bombardier CRJ 200LR - Skywest Charter SCW2000 - 4.5 mi away @ 37725 ft, heading SW at 475 mph. Spotted once before! [09:15:03 AM CDT] #A56643 #N447SW #CRJ2 #CHARTER_WEST #SCW2000 #ADSB #ADSBbot