The odds are high that it will not go off in the time that the United States of America is a country.
The odds are reasonable that it will not go off in the time that homo sapiens is a species.
If it does go off, it will be the largest disaster on record, the United States as we know it will be destroyed, and it will be a worldwide threat.
Let's not worry about it, shall we?
Either it happens, I have enough warning and I live, it happens and I don't have enough warning so I die, or it doesn't happen. No sense worrying in any case.
My point is just that if it goes off, the problem won't be just Colorado's.