No. When the Twin Towers fell, EVERYONE knew about it within 12 hours of it happening. I didn't know about the Japan thing until two days later.
Because it is something that happens slowly and has 1000 x more potential for death, illness and environmental destruction.
9/11 was instant, emotive and memorable I guess.
"where were you moments" don't have a natural disasters history at all
I'm talking about the Nuclear Plant going into meltdown btw...