I think it would become a government thing where they would be TOLD not to cover it as it will cause panic and deaths (and it would).

Not sure what the answer would be in such a scenario, but simply getting on the media and saying "hey a 200 foot wave will be hitting the East Coast in 8 hours!" would cause pure pandemonium.

I think maybe they would try to open up all the interstates as departure lanes but even still, if you have seen the tri-state are during rush hour you know even that would not work.

I don't think there is any evil reason they would withhold the information. It would be out of desperation and not knowing what to do.

It would be on a scale never seen in the memory of human experience.