I was thinking more the period from Aug 25 to Sep 7 in 2018. There were a few tornadoes on Sep 1, but it was mostly a ton of lightning and heavy rain. I don’t know what it takes to get that kind of low-level jet with 70+ dews repeatedly surging up into MI vs stalling near the southern border as is more typical. If there was an easy way to access the data I’d look it up. I suspect something was going on in the Western Pacific, like recurving typhoons, but don’t know. It was atypical as the previous summer was pretty dry from what I recall.
In any case, I think I’d much rather go on a spring chase vacation on the plains to witness a tornado.