1 in 1000 year events are poorly named. One because it describes a likelihood, so this storm had a 0.1% chance of occurring in any given year, so we’d expect to see a storm like this once every thousand years on average. It’s not cyclical. Two, the likelihood of these storms is steadily increasing and so it’s probably no longer a 1 in 1000 year event.
Mitch Hedberg jokes while high is a pretty smart move. Either that or you’re the only person who finds them funny and end up looking like an idiot.