Certainly brings up the question. What good would it do if it was going to hit and they actually did tell us? They can't predict to any kind of pin point WHERE it'll hit. Soooooo, why cause mass histeria, crime, looting, cats and dogs living together in peace?
I really can't see them ever letting us know. And even if amatures saw it coming it'd be easy enough for Obama's boys to keep the press hushed for a few days / weeks.