What is the probability that another earth quake will occur like that of april 18?

This may sound odd, I don't know how many of you believe in psychics or anything like that. Let me explain. In 2000 this man (He does psychic readings and such in illinois) Told my family that 2 earth quakes were going to happen to the midwest within the next ten years. One small one, no damage, and then a second one. An extremely large one with mive amounts of devastation. He said that it would be so large, that the great lakes would be connected to mississipi river. Cities would be lost, families seperated, and it would be the worse earth quake to hit the U.S. What are the chances of another earth quake happening, and what are the chances of it being of that magnitude. He said we physically wouldn't be harmed because we would no longer be residing in the midwest. in 2006 we moved to ky, (From chicago, and not because the psychic told us we would lol) but he said many of your friends and family would be gone. I'm just curious as to what people think. Thanks