There is a reason it's been so quite. FEMA modeling said over 50k could die in a situation like this.. I sure hope they are way off.
Don't forget the reporters claimed 20 or 30 thousand would be dead in the World Trade Center attack on 9/11. That figure turned out to be way off.
If I was speculating as to why they might only give out the worst case scenario numbers, I'd guess it could be when the real numbers come out, it makes the disaster not seem so bad. They want the American people to go back to sleep and never hold anyone in government accountable.