An earthquake with a preliminary magnitude of 5 struck Nagano Prefecture at 12:48 p.m. Tuesday, the Japan Meteorological Agency reported. No tsunami alert was issued, the agency said.
The epicenter was located at a depth of 20 kilometers in northern Nagano, the agency said.
A second quake with a magnitude of 3.9 jolted Niigata Prefecture and parts of Nagano at 1:33 p.m., the agency said. Its epicenter was located about 10 kms deep in northern Nagano, the agency said.
© Japan Today
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SquidBert
Regarding earthquake caused damage, NHK reports today::
jforce
It's all good. Only the northern part of Nagano was shaking. Nothing new in those parts.
nath
Just the one plant, but Kashiwazaki-Kariwa was the biggest in the world in terms of output until it was shut down after the Tohoku earthquake. And, as you say, it has a very poor safety record. I would have to admit to being very glad that I no longer live in Niigata, in that respect.
I believe there is still some debate about this - I have a recollection of seeing a headline from a Japanese-language media story on Twitter recently that said that at least part of the damage was (or possibly was) caused by the quake, not the flooding by the tsunami.
I don't know what the risk of a tsunami on the Sea of Japan is, since it's a smaller body of water than the Pacific Ocean, but with all of Japan's nuclear plants using the sea as their ultimate heat sink (other countries also use lakes or even the air), a tsunami is a risk for all of them.
Shaun Johnson
As long as they were not in Fukushima near reactor 4 I think its good news...
Thomas Michael Lewis
Worth remembering Fukushima was damaged by a tsunami not an earthquake.
smithinjapan
Hope everyone's okay.
japan123
My worry is the earthquake in Niigata, where there are nuclear plants knowingly built on faulty lines and with poor safety and security record.
Seawolf
I would think so, as Nagano prefecture doesn't have any ocean to it, It's smack in the middle of Honshu!
Onniyama
Anyone here live up that way? Any damage?
Herve Nmn L'Eisa
I think there were a total of four quakes.
nath
what about shindo?
Darryl Woodrow
I hope nobody was injured..