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

🇺🇸 N453AA - Airbus A321 253NXSL - American Airlines AAL3141/AA3141 (PHL-SFO-PHL) - 4.1 mi away @ 34325 ft, heading W at 445 mph. Spotted 10x before. [10:37:19 PM CST] #A57D42 #N453AA #A21N #AMERICAN #AAL3141 #AA3141 #ADSB #ADSBbot