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

🇺🇸 N906EV - Bombardier CRJ 200ER - United Express SKW5103/OO5103, Chicago O'Hare (ORD) to Joplin Regional (JLN) - 3.9 mi away @ 33875 ft, heading WSW at 474 mph. Spotted once before! [11:03:57 PM CDT] #AC85EE #N906EV #CRJ2 #SKYWEST #SKW5103 #OO5103 #ADSB #ADSBbot