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

🇺🇸 N8758L - Boeing 737MAX 8 - Southwest Airlines SWA6589/WN6589, St Louis Lambert (STL) to Harry Reid (LAS) - 11.6 mi away @ 15700 ft, heading WNW at 435 mph. Spotted 54x before! [04:50:50 PM CDT] #AC0C64 #N8758L #B38M #SOUTHWEST #SWA6589 #WN6589 #Departure #ADSB #ADSBbot