And the fall of 1997, fall of 1998, spring of 2000?
I don't have a good way to look that up, but nothing like that made an impression on me... so I'm thinking not.
Traders should not fear the "black swan" event. Should have reasonable plays with stops in place. However, nobody is safe from the "lightning bolt", and especially overnight. That said, nothing like that has happend to the markets since I've been a player. (Has happened to individual stocks, of course, but that's different.)