Masashi e-mailed me today with the following news.
"Today (April 11) the Japanese government announced an expansion of the evacuation zone, and Iitate village as a whole is now included in that zone. This newly added zone is designated based on data suggesting that residents would be exposed to more than 20 milli Sv per year if this situation continues. Four other municipalities or parts of them in Fukushima prefecture were also included in the zone. Residents are requested to evacuate within a month. Now Iitate residents have come to face a very big problem.
Today, we also had rather large aftershocks: one of them was 7.1 magnitude, exactly once month later of the 3.11 earthquake.