Iodine-131 measured from snow in Hachioji Tokyo

It snowed on 1/20/2012 around in Tokyo.

They measured Iodine-131 from the snow in Hachioji Tokyo.

Iodine-131 measured from snow in Hachioji Saitama


Iodine-131 measured from snow in Hachioji Saitama 2


Cesium 134 : 14.9 Bq/Kg

Cesium 137 : 15.3 Bq/Kg

Iodine 131 : 20.0 Bq/Kg

Measurement of Iodine 131 suggest the possibility of recriticality of Fukushima, but it was measured more than cesium at this test.




For a comparison, this is the measurement result of snow in Nagano.(1/4,5/2012)

Iodine-131 measured from snow in Hachioji Saitama3


Cesium 134 : ND

Cesium 137 : ND

Iodine 131 : ND



About this site

This website updates the latest news about the Fukushima nuclear plant and also archives the past news from 2011. Because it's always updated and added live, articles, categories and the tags are not necessarily fitted in the latest format.
I am the writer of this website. About page remains in 2014. This is because my memory about 311 was clearer than now, 2023, and I think it can have a historical value. Now I'm living in Romania with 3 cats as an independent data scientist.
Actually, nothing has progressed in the plant since 2011. We still don't even know what is going on inside. They must keep cooling the crippled reactors by water, but additionally groundwater keeps flowing into the reactor buildings from the broken parts. This is why highly contaminated water is always produced more than it can circulate. Tepco is planning to officially discharge this water to the Pacific but Tritium is still remaining in it. They dilute this with seawater so that it is legally safe, but scientifically the same amount of radioactive tritium is contained. They say it is safe to discharge, but none of them have drunk it.


January 2012