My bet is it's the day of the Super Bowl or the Las Vegas Grand Prix.

So, if you see a 5, you are probably fine. If it gets up to 6 or 7, maybe start worrying.

Yeah came here to say the same thing. While last year might have been a bit chaotic, this as well, I highly doubt we were as close as it is possible to come to nuclear apocalypse without getting one. This seems like a completely useless metric.