An emergency bulletin "Kinki district seismic intensity 7 earthquake occurred" flows but Osaka does not shake at all

At about 16:56 on 8th, "Earthquake occurred in Nara PrefectureAn emergency earthquake bulletin went through. There are rumors that "it was seismic intensity 7" and "magnitude 7.8" on the net, but in Osaka where GIGAZINE editorial department is located, there is no feeling of any shaking and there is a possibility of misinformation according to the Meteorological Agency.

The flash report was like this, every smart phone rang at once.


And weather news reports that "seismic intensity 7 earthquake occurred in Kinki district". It turned out that there was no such shake now.

Earthquake Information :: Weather News
http://weathernews.jp/quake/


Besides this, the earthquake early warning application "Jikurukuru Call" was supposed to have occurred an earthquake with a magnitude of 7.8 and a maximum seismic intensity of 7.

[EEW] ID: ND20130808165608 SEQ: 1 Epicenter: Nara Prefecture Latitude: 34.4 Longitude: 135.7 Hypocenter depth: 60 km Date of occurrence: 2013/08/08 16: 55: 59 Magnitude: 7.8 Maximum seismic intensity: 7# Yurekuru

- Jealous call (@ yurekuru)August 8, 2013

· 2013/08/08 17:16
The Japan Meteorological AgencyThere was an earthquake with Wakayama prefecture as the epicenter at 16:56We announced that. The epicenter of the epicenter is in northern Wakayama Prefecture, the depth of the epicenter is about 10 km, the magnitude is 2.3, and no shake of more than 1 seismic intensity has been observed.


According to Newsletter, the Meteorological Agency is investigating the possibility of misinformation.

Current affairs dot com: "Kansai seismic intensity 7" possibility of false alarm = With the emergency earthquake bulletin JMA
http://www.jiji.com/jc/c?g=soc&k=2013080800727

According to NHK, "It is predicted that a strong shake is predicted and announced an emergency earthquake bulletin".

Emergency Earthquake Early Warning JMA "No Earthquake Earthquake" NHK News
http://www3.nhk.or.jp/news/html/20130808/k10013643351000.html

Although it seems that there was not a sensation earthquake this time, damage did not occur, but if "a strong shake is predicted", it is pretty bothering what it was.

· 2013/08/08 17:33
It seems that an emergency earthquake bulletin report that the shake will occur from the metropolitan area to the northern part of Kyushu on television. As a result of surprised people going to search for information on the net, the Japan Meteorological Agency and weather news, Yahoo! I also nodded that JAPAN became difficult to connect.

False earthquake early warning report, the range is too much w west Japan great earthquake? Tentatively, we should keep the earthquake countermeasures firm.Pic.twitter.com/2xJsIqmF48

- Yamada Hisashi (@ kennkou 1)August 8, 2013

2013/08/08 18: 26
The Japan Meteorological Agency did a conference and acknowledged that it was a misinformation.

Mr. Yuhei Hasegawa of the earthquake and volcanic earthquake tsunami monitoring manager of the Meteorological Agency who attended the interview.


The cause of the false alarm was that the ocean bottom seismographs detected noise at around the same time as the M 2.3 earthquake occurred at around 16:56 on the northern part of Wakayama Prefecture and the magnitude of the earthquake was mistaken for this It was because it was. The bottom graph is cut off at the center, and when it returns it is a triangular wave appearing on the top two, but this is noise.


Ocean bottom seismographs are installed in this area, and "Tonankai 3" detected noise this time.


2013/08/09 12: 18 Addition
In addition, at the station, the following guidance like a movie flowed to the bulletin board, causing a situation in which the train operation was greatly disturbed.

Earthquake Early Warning Telop with "Seismic intensity 7 earthquake occurred in Kinki district" - YouTube