NHK just announced that radiation levels around the Fukushima facility has reached dangerous levels. People living within 20~30 kilometers have been asked to stay indoors and follow radiation exposure safety precautions.
They have also said that Tokyo, Saitama, Chiba, and Ibaraki have all detected higher than normal radiation levels in the air. They say it is not immediately dangerous to humans, citing that it is around the same level as found during the cold war when the radiation levels rose in Japan due to US and USSR nuclear weapons test, which did not pose immediate harm at the time.
