It's shocking that 1993 was actually just as slow, severe-wise, as this year up to this point. All I remember about '93 was how it stormed and rained constantly all summer. I was golfing a lot that summer and the courses were always flooded. It seems '93 was pretty dead, but then Mother Nature flipped the switch in early June.
Unfortunately, 2021's line will likely end up somewhere in the blank area at the bottom.