This sounds rather alarmist to me. I'm not an expert in nuclear energy nor want to be "that guy". But the text you pasted is wrong in a few parts: it's two problematic reactors at a singular site, a 12-mile radius was evacuated, and it's not possible for a full meltdown to occur. Also, of course radioactivity is going to be higher around the site. You're near the darn things! But to actually have radiation poisoning, you'd have to be exposed to the max reported levels (1000 to 1500 micro-Svs) for a lot longer time. We're talking weeks here. If a plume is indeed headed east, it's extremely unlikely for it to make the west coast and if it did, it would be undetectable. Brownstein's quoted estimate of 750 RADS is ridiculous and obviously very much detectable.
It's still a terrible disaster and for more info about it, the official TEPCO site is quite good (http://www.tepco.co.jp/en). It's not a US gov agency so a tin foil hat is not required but is nice to have handy. The site is constantly hammered.
In any case, take your Iodine and avoid the 24-hour news networks. :)