Tornadoes virtually always travel SW to NE, although due east is not unusual.
It’s due to the prevailing southwesterly winds and that the t-storms move west to east.
Right - just for some reason, in that area to the west and WSW of Marion, IL, it seems an unusual number, over the years, have tracked due east. This last one actually turned ESE from E when it acquired F4 strength near its end. I know a “right turn” is not unusual for extremely strong tornados - this one was just going east already...
Thank God this beast DIDN’T behave typically, SW to NE, or follow a path just a few miles north — “Little Egypt” doesn’t need that kind of wrath from above. (As if anyone does.)