I did detailed analysis of the Fukushima meltdown on another site at my previous "stomping grounds."
I also was up late doing research and watched the tsunami real time early in the morning on CNN. OP, if it OK with you, I would like to repost my work. I think it will answer almost all of your questions.

Viewing message number 66964 out of 614 posts on Precious Metals by ronxxxxx

Msg 66964 of 74116 at 3/11/2011 2:13:22 AM by
ronxxxxx

OT: Massive 8.8 Magnitude Earthquake in Japan
Just now...possible West Coast USA tsunami...take appropriate action...