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

🇺🇸 N425AN - Airbus A321 253NXSL - American Airlines AAL2888/AA2888, Miami (MIA) to Portland (PDX) - 3.9 mi away @ 31450 ft, heading WNW at 436 mph. Spotted 10x before! [09:27:15 PM CST] #A50E3F #N425AN #A21N #AMERICAN #AAL2888 #AA2888 #ADSB #ADSBbot