M4.9 Fukushima offshore / Tepco reported the quake in Fukushima plant was fortunately 1/6 “slower” than Daini

M4.9 hit Fukushima offshore at 18:16 of 4/13/2014 (JST) according to Japan Meteorological Agency.

The maximum seismic intensity was 4 in Naraha machi. The depth of epicenter was 60km.


Tepco announced there was no abnormality in plant parameter, and they also reported that the Gal (unit of gravitational acceleration) monitored in Fukushima Dai-ichi plant ( called Fukushima plant usually) was only 1/6 much as Fukushima “Daini” plant. These plants are only approx. 10km away from each other.


From Tepco’s seismometer, the gravitational acceleration was 4.1 Gal horizontally and 4.4 Gal vertically in reactor6 Fukushima Dai-ichi. On the other hand, it was 30 Gal horizontally and 25 Gal vertically in reactor1 Fukushima “Daini” plant. The Gal readings in Fukushima Dai-ichi are reported to be 1/7 ~ 1/6 times much as “Daini”.


It looks like the earthquake avoided the fragile plant as if it had the intelligence. Tepco hasn’t made any explanation about this.






You read this now because we’ve been surviving until today.


Français :

Séisme M4,9 au large de Fukushima / Tepco a rapporté que par chance le séisme a été 1/6 “plus lent” dans la centrale de Fukushima qu’à Daini


Un séisme M4,9 a frappé au large de Fukushima le 13 avril 2014 à 18:16 (JST) selon la Japan Meteorological Agency.
L’intensité sismique maximale a été de 4 sur Naraha machi. L’épicentre était à une profondeur de 60 km.

Tepco a annoncé qu’aucune anomalie n’a été constatée dans les paramètres de la centrale et que le Gal (unité d’accélération gravitationnelle) surveillé à la centrale de Fukushima Dai-ichi (centrale de Fukushima habituellement) n’a été que le 6e de celui de la centrale de Fukushima “Daini”.  Ces centrales ne sont qu’à environ 10 km l’une de l”autre.

Selon le sismographe de Tepco, l’accélération gravitationnelle a été de 4,1 Gal horizontalement et de 4.4 Gal verticalement dans le réacteur 6 de Fukushima Dai-ichi. D’un autre côté, il était de 30 Gal horizontalement et de 25 Gal verticalement dans le réacteur 1 de la centrale de Fukushima “Daini”. Les relevés des Gal de Fukushima Dai-ichi sont rapportés être entre 1/7e et 1/6e de ceux de “Daini”.

On dirait que le séisme a évité cette fragile centrale comme s’il était intelligent. Tepco n’a donné aucune explication là-dessus.

Vous pouvez lire ceci parce que nous avons survécu jusqu’à aujourd’hui.

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.


April 2014