I had a dream about an earthquake in chicago. Interpret?

So I was visiting my cousins in Chicago, which is my FAVORITE city and i would be heartbroken if anything like this happened to it. We were in Millennium Park, and a man came running past us yelling, "It's gonna flood!" So we panicked and got into the car and drove onto the highway to escape this "flood." The ground started violently shaking, and I turned around to look at the city and watched in tears as the Willis (Sears) Tower collapsed into ash. We went back to the city after the quake was over. It looked somewhat like the scenery from the movie "Silent Hill." Ruins and ash. A pipeline had broken, flooding half the city. The collapse of the Sears Tower had greatly damaged nearby buildings. We got on the tour ship in the Chicago River. And then I woke up.