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

🇺🇸 N448AS - Boeing 737NG 990ER/W - Alaska Airlines ASA492/AS492, Seattle-Tacoma (SEA) to Hartsfield - Jackson Atlanta (ATL) - 4.2 mi away @ 36500 ft, heading SE at 554 mph. Spotted 6x before! [09:45:29 PM CDT] #A56866 #N448AS #B739 #ALASKA #ASA492 #AS492 #ADSB #ADSBbot