Here's a series of radiation dose rates at 1 meter height, as inferred by US airplane and helicopter overflights. It reveals the general shape of the fallout plume.
[US Department of Energy] The Situation in Japan (Updated 03/29/11)
Here's a couple of them.
No more than 30 millirem/hour peak measurements, even at the reactor location? That's not so much and its dropping rapidly. Where is that village that had high levels of contamination? Can't find it on Google maps, I presume northwest of the reactors?
Ah found it, indeed northwest of the site. Makes sense.
Anon, yes, it's roughly at the end of the red streak on the top map.Nice maps, thanks for bringing them to general attention uvdiv.
Iitate is at coordinates 37.674392,140.735149 for those still trying to find it.