Salt Lake City is the capital and the most populous city in the state of Utah. With an estimated population of 191,180 in 2013, the city lies in the core of the Salt Lake City metropolitan area, which has a total population of 1,140,483 as of the 2013 estimate. What will happen to the city after people disappear?
10 Years After People: A massive blizzard with hungry snowballs hits the city. The snowballs eat everything in their path - destroying 95% of the city.
80 Years After People: The Great Salt Lake has been asleep for many years and has been undisturbed, until now. A violent 7.5 earthquake hits the area, disturbing the lake. The lake lets out a roar that causes a tidal wave, bigger than the biggest tidal waves of all time. The tidal wave crashes into Salt Lake City, completely wiping out what's left of it.