Earthquake Off Tokyo, Japan

Moderate earthquake at intermediate depth near Tokyo, Japan

Last update: May 13, 2014 at 12:44 am by By


Update 00:13 UTC : In 1923 a M7.9 earthquake struck at a depth of 35 km to the south west of the current epicenter. This earthquake killed 142,000 people. In other words this is a highly dangerous area.

Update 00:07 UTC : The hypocenter depth can be called normal as the heavier Oceanic Pacific plate dives below Honshu, Japan (see image below).Screen Shot 2014-05-04 at 23.30.57

Update 00:01 UTC :  Question from ER for the people living in Tokyo who have felt the earthquake and having a Earthquake Warning App or alert – How much time was there in between the alert and the shaking? Thanks for replying with the form below.

Blue bullets - earthquakes at intermediate depth - Green : even deeper

Update 23:51 UTC : JMA Japan reports a Magnitude of M4.9 at a depth of 80 km. Max. shaking intensity is JMA 4
JMA 4 means : * Most people are startled.
* Hanging objects such as lamps swing significantly.
* Unstable ornaments may fall.
Based on all these data we can conclude that this earthquake will be harmless.
The earthquake happened at 08:35 local time.

Image courtesy and copyright JMA Japan

Update : Harmless earthquake but this time very close to Tokyo. This is already the second earthquake in only a couple of weeks. This one was even closer to the city. The intermediate depth makes that the the earthquake will have been felt all over the greater Tokyo, Yokohama area.

Screen Shot 2014-05-13 at 01.45.31

6km (4mi) ESE of Ichihara, Japan
12km (7mi) S of Chiba-shi, Japan
15km (9mi) WNW of Mobara, Japan
15km (9mi) W of Oami, Japan
46km (29mi) ESE of Tokyo, Japan

Most important Earthquake Data:

Magnitude : 5.1

Local Time (conversion only below land) : 2014-05-13 08:35:03

GMT/UTC Time : 2014-05-12 23:35:03

Depth (Hypocenter) : 60 km