Large Japan Earthquake – May 30

Massive very deep earthquake out of the Japan coast – NO tsunami

Last update: May 30, 2015 at 12:53 pm by By

Update : So far NO aftershocks which may stay like that in the case of these very deep earthquakes

Update : The earthquake will have been felt in a very wide area, mostly as a long slight shaking.

Update : 1 prefecture got a 5+ shaking value : Ogasawara-mura Hahajima (Chich jima island and nearest to the epicenter). 5+ is considered at ER as a possible damaging earthquake.

Update : JMA Japan reports even a higher Magnitude than those listed on this page M8.5 at 590 km depth

Update : JMA Japan reports NO tsunami warnings or advisories (because of the deep hypocenter)

Update : a very deep earthquake happened in the hot solid mantle of the earth  out of the Japan coast

Screen Shot 2015-05-30 at 04.42.00

189km (117mi) WNW of Chichi-shima, Japan
771km (479mi) SSE of Shimoda, Japan
781km (485mi) SSE of Oyama, Japan
783km (487mi) SE of Shingu, Japan
874km (543mi) S of Tokyo, Japan

Most important Earthquake Data:

Magnitude : 7.7

Local Time (conversion only below land) : Unknown

GMT/UTC Time : 2015-05-30 11:23:03


Honshu, Japan Earthquake

Moderate earthquake at intermediate depth below Honshu, Japan

Last update: May 25, 2015 at 6:15 am by By

Update 05:41 UTC : JMA reports a max intensity of JMA 5-, just below what we see as the damage potential. Slight damage is however always possible.

Update  05:38 UTC: Magnitude M5.6 at a depth of 590 km. Epicenter : Saitama-ken Hokubu

Screen Shot 2015-05-24 at 23.40.11

2km (1mi) NNW of Hasuda, Japan
3km (2mi) SW of Shiraoka, Japan
5km (3mi) ENE of Ageo, Japan
7km (4mi) NW of Iwatsuki, Japan
34km (21mi) N of Tokyo, Japan

Most important Earthquake Data:

Magnitude : 5.1

Local Time (conversion only below land) : 2015-05-25 14:28:10

GMT/UTC Time : 2015-05-25 05:28:10


Nagano, Honshu Japan Damaging Quake

Extremely dangerous earthquake in Nagano, Honshu, Japan – At least 20 injured

Last update: November 22, 2014 at 5:41 pm by By

Update 17:20 UTC : The number of injured has increased to 20

Update 16:43 UTC : In the 16:23 update we did talk about a Thrust type earthqauke. This was confirmed by the following report : In Joetsu,  the road has been lifted about 50cm (Kiyosato District Kaminakajo district)

Update 16: 39 UTC : The latest reports are mentioning 11 injured

Update 16:23 UTC : The damage looks rather limited if we take the strong Magnitude into consideration. One of the main reasons is the earthquake type. Based on the USGS beach-ball below we are looking at a thrust focal mechanism (2 plates pushing towards each other. The resulting movements are far less dangerous than transform earthquakes (the type which hit China today). An additional reason to have weaken the shaking is the location it occurred, the rocky Japanese Alps. This kind of underground does not transmit the earthquake waves like it would be the case in for example a sediment valley.

Screen Shot 2014-11-22 at 17.18.09 Screen Shot 2014-11-22 at 17.20.09

Update 16:12 UTC : As we are after midnight in Japan, rescue operations take more time. In some parts of the epicenter area the power is down. There are also reports of broken water pipes, a ruptured fuel tank leaking 1000 liter of oil. Collapsed walls etc. It will take at least 5 to 6 hours (early morning) before we will get a good picture of the damage.

Update 16:01 UTC : So far at least 4  people injured

Update 14:38 UTC : As could be expected, multiple landslides have been notices (these are the Japanese Alps). One of these landslides is blocking the Shirasawa tunnel who links Nagano with Hakuba

Important Update 14:27 UTC : Several buildings collapsed and people possibly buried in Nagano Prefecture. (Source NHK Japan) Update : 4 houses should have been collapsed. No further news at the moment.

Update 14:17 UTC : The Nagano Fire Department is reporting several injuries and a building collapse after 6.8 quake this evening.

Update 14:13 UTC : Kyodo News Reports that Hakuba Village (famous for the 98 olympics) has seen a building collapse.

Update 14:11 UTC : Image of a convenience store in Nagano

Update 14:06 UTC : The city of Nagano has not sustained damage so far (this would be seen almost immediately). Power is still on in Nagano based on the webcam we are looking at. So far we have reports of 2 people who have been injured in Hakuba (ambulance under way).

Update 14:01 UTC : Below the theoretical shaking map of USGS based on a M6.2 Magnitude (JMA Japan reports M6.8)

Screen Shot 2014-11-22 at 15.00.44 Screen Shot 2014-11-22 at 15.01.02 Screen Shot 2014-11-22 at 15.01.13

Update 13:51 UTC : The Nagano prefecture authority has reported that the Kashiwazaki-Kariwa nuclear power plant sustained NO damage but has been shut down as a precautionary measure.

Update 13:47 UTC : Shaking of the Nagano earthquake (ni mention of distance from the epicenter)

Update 13:43 UTC : until now only reports from items falling from shelves. No structural damage so far (too soon to be final of course) (thx to @RobertSpeta living in Japan)

Update 13:37 UTC : Prof. Max Wyss who specializes in theoretical calculations of injured and fatalities based on many parameters expect for this earthquake 0 to 10 fatalities and 0 to 100 injured. He has used the GFZ data (M6.2 at 10 km for his calculations).

Update 13:31 UTC : We expect the whole Nagano prefecture at risk for damage and injuries.

Update 13:30 UTC : EMSC and USGS are reporting a M6.2 Magnitude bur JMA Japan maintains his M6.8 Magnitude at 10 km.

Update 13:24 UTC : Shaking values who may lead to damage. Landslides are almost a certainty! Of course NO tsunami risk because the earthquake happened below mainland Honshu

6-    Nagano-shi Togakushi*, Nagano- shi Kinasa*, Otari-mura Nakaotari*, Ogawa-mura Takafu*
5+    Nagano-shi Hakoshimizu, Nagano-shi Toyonomachi-Toyono*, Nagano-shi Nakajo*, Hakuba-mura Hokujo* and Shinano-machi Kashiwabara-higashiura*
5-    Nagano-shi Shinshushimmachi-shimmachi*, Nagano-shi Ooka*, Nakano-shi Toyotsu*, Omachi-shi Yasaka*

Update 13:22 UTC  : JMA Japan has a theoretical shaking of -6 We at consider 5+ already as probably damaging. The earthquake happened at a shallow depth below Eastern Honshu

Screen Shot 2014-11-22 at 14.14.23

16km (10mi) NNE of Omachi, Japan
24km (15mi) W of Nagano-shi, Japan
33km (21mi) N of Hotaka, Japan
36km (22mi) W of Suzaka, Japan
191km (119mi) NW of Tokyo, Japan

Most important Earthquake Data:

Magnitude : 6.2

Local Time (conversion only below land) : 2014-11-22 22:08:18

GMT/UTC Time : 2014-11-22 13:08:18


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


Japan – Kyushu Earthquake

Very Strong dangerous earthquake Kyushu prefecture (Osaka), Japan – At least 21 injuries (2 severely) + damage

Last update: March 14, 2014 at 5:49 pm by By

Update 17:48 UTC : The last report from FDMA mentions 21 injuries from whom 2 severely

Update 08:37 UTC :
Hiroshima: 9 injuries, 12 houses in Kure town damaged (walls collapsed), water pipes broke
Okayama: 5 injuries, 3 houses damaged in Okayama town, Kurashiki and Mizushima (factory of Mitsubishi motors)
Oita: 2 injuries, water pipes broke + rockfall
Yamaguchi: 2 injuries
Ehime: 1 injury
Kochi: 1 injury

Update 22:22 UTC : The total number of injuries has risen in the past couple of hours to 13.

Update 19:40 UTC : 4 more injuries reported – 2 in Yamaguchi and 2 in Oita prefectures

Update 18:45 UTC : Another injury in Okayama and some damage has been reported in addition to our earlier updates.

Update 18:20 UTC : Local newsmedia are reporting 3 injuries so far in Okayama, none of them seriously. 2 older woman and a 3-month old baby have been injured and transported to the nearest hospital. 2 other injuries in other areas. All injuries are due to escaping the house while the shaking was going on.

Update 17:37 UTC : Max Wyss, specialized in injuries/fatalities theoretical computing, indicates NO fatalities and a max. of 10 injured. Max Wyss used data with an epicenter below land where local JMA Japan puts the epicenter in the see. does not expect serious damage because of this earthquake but mainly because of the depth of the epicenter (preliminary reports are stating 80 km). Deep earthquakes are not as dangerous as shallow ones.

Update 17:31 UTC : JMA Japan reports a Magnitude of M6.1 at a depth of 80 km. NO news yet from the Japanese Fire Department who normally reports in damage

Update 17:23 UTC : Intensity values (5+ is considered by as potentially damaging.:
5+    Ehime-ken Nan-yo
5-    Hiroshima-ken Hokubu, Hiroshima-ken Nanseibu, Ehime-ken Chuyo, Kochi-ken Seibu, Yamaguchi-ken Tobu, Yamaguchi-ken Chubu, Oita-ken Hokubu, Oita-ken Chubu and Oita-ken Nambu

Screen Shot 2014-03-13 at 18.15.38

106 km SW of Hiroshima-shi, Japan / pop: 1,143,841 / local time: 02:06:53.0 2014-03-14
52 km N of Ōita-shi, Japan / pop: 448,907 / local time: 02:06:53.0 2014-03-14
16 km N of Kunisaki-shi, Japan / pop: 32,781 / local time: 02:06:53.0 2014-03-14

Most important Earthquake Data:

Magnitude : 6.3

Local Time (conversion only below land) : 2014-03-14 02:06:50

GMT/UTC Time : 2014-03-13 17:06:50

Depth (Hypocenter)  : 73 km


Japan 7.3 Earthquake – FUkushima Tsunami Advisory

Massive earthquake out of the East Coast Of Honshu, Japan – Extended Tsunami shores advisory

Last update: October 25, 2013 at 5:56 pm by By is a independent NGO website who only survives because of (mostly small) PRIVATE DONATIONS. Your gift will be highly appreciated.

Update 17:51 UTC : JMA Japan has extended the reach of the Tsunami waves along almost the full North Eastern Honshu shoreline. NO tsunami higher than 1 meter is expected though

Screen Shot 2013-10-25 at 19.59.10

Screen Shot 2013-10-25 at 19.55.41

Update 17:51 UTC : More information about the expected tsunami (max. wave 1 meter) –  IWATE PREF.  1 m, MIYAGI PREF. #1 m, FUKUSHIMA PREF.  1 m, IBARAKI PREF. 1 m and UJUKURI AND SOTOBO AREA, CHIBA PREF. 1 m.
What means a Tsunami height of 1 meter ? : 1 m   People will be caught in a strong current in the sea. Fish farming facilities will be washed away and small vessels will capsize.

Update 17:49 UTC : Some stronger waves (tsunami advisory) are still expected (18:00 UTC and 18:20 UTC) :

Screen Shot 2013-10-25 at 19.47.14

Update 17:39 UTC : Tsunami message for the Pacific Ocean (many people are waiting for this ) – NO DESTRUCTIVE WIDESPREAD TSUNAMI THREAT EXISTS BASED ON HISTORICAL EARTHQUAKE AND TSUNAMI DATA.

Update 17:36 UTC : The epicenter of this earthquake is in the vicinity of Joban Seamount Chain (underwater volcano).

Update 17:34 UTC : We are convinced that the shaking will NOT be damaging. The maximum shaking value as reported by the Japanese agency JMA is JMA4 (Miyagi-ken Hokubu, Miyagi-ken Nambu, Miyagi-ken Chubu, Fukushima-ken Nakadori, Ibaraki-ken Hokubu, Tochigi-ken Hokubu and Tochigi-ken Nambu)
JMA4 : * Most people are startled.
* Hanging objects such as lamps swing significantly.
* Unstable ornaments may fall.

Update 17:27 UTC : JMA Japan reports now a Magntude of 6.8, a lot weaker than the initially reported 7.3 (by other agencies)

Update 17:17 UTC  : Max. intensity 4JMA, thats not damaging (preliminary report)
Update 17:20 UTC  : Tsunami advisory for FUKUSHIMA
Update 17:23 UTC : The epicenter is luckily hundreds of kms out of the coast

Image courtesy JMA Japan

Image courtesy JMA Japan

325km (202mi) ESE of Ishinomaki, Japan
326km (203mi) E of Namie, Japan
331km (206mi) SE of Ofunato, Japan
333km (207mi) ESE of Yamoto, Japan
475km (295mi) ENE of Tokyo, Japan

Most important Earthquake Data:

Magnitude : 7.3

Local Time (conversion only below land) : Unknown

GMT/UTC Time : 2013-10-25 17:10:17

Depth (Hypocenter)  : 5 km


Earthquake off Honshu East Coast Japan

Very strong earthquake at intermediate depth near Ishinomaki, Japan

Last update: August 4, 2013 at 8:40 am by By

Update 08:37 UTC : A third injury is confirmed. It’s a man who fell and hurt his hip.

Update : 2 people injured is the somewhat surprising result of this earthquake at intermediate depth. No specific reports of damage as yet but we will continue to search for eventual damage

Update : JMA Japan reports a Magnitude of M6.0 at a depth of 50 km.
JMA5+ intensity at Ishinomaki-shi Kobuchihama
JMA5- intensity at Wakuya-cho Shimmachi-ura, Osaki-shi Kashimadai*, Ishinomaki-shi Monoucho* and Onagawa-cho Onagawahama*
Based on our experience with Japanese earthquakes, considers JMA 5+ intensity as a potentially dangerous shaking.

A very strong earthquake at intermediate depth struck the Ishinomaki area. Epicenter was offshore.

Image courtesy and copyright JMA Japan

Image courtesy and copyright JMA Japan

57km (35mi) ESE of Ishinomaki, Japan
64km (40mi) ESE of Yamoto, Japan
75km (47mi) ESE of Matsushima, Japan
76km (47mi) E of Shiogama, Japan
340km (211mi) NE of Tokyo, Japan

Most important Earthquake Data:

Magnitude : 5.8

Local Time (conversion only below land) : 2013-08-04 12:28:52

GMT/UTC Time : 2013-08-04 03:28:52


Ryuku Islands Earthquake

Strong earthquake out in the sea of the Kagoshima prefecture, Japan (Ryukyu Islands)

Last update: June 13, 2013 at 2:26 pm by By

Update 14:23 UTC : The hypocenter of this earthquake was right in the subduction slope and very shallow (8 km), which may explain in part why it was felt as strong by the people living and working on the nearby islands.

Update 13:52 UTC : There is of course NO tsunami danger for this earthquake

This earthquake was very well felt in the Kagoshima prefecture but was not really dangerous with a maximum JMA3 intensity shaking. Based on our experience with Japanese earthquakes, considers JMA 5+ intensity as a potentially dangerous shaking.

Image courtesy and copyright JMA Japan

Image courtesy and copyright JMA Japan

89km (55mi) E of Nago, Japan
102km (63mi) ENE of Gushikawa, Japan
102km (63mi) ENE of Haebaru, Japan
106km (66mi) E of Ishikawa, Japan
1235km (767mi) S of Seoul, South Korea

Most important Earthquake Data:

Magnitude : 5.6

Local Time (conversion only below land) : Unknown

GMT/UTC Time : 2013-06-13 13:24:44


Honshu Coast Earthquake

Very Strong earthquake along the east coast of Honshu, Japan (Ishinomaki area)

Last update: May 18, 2013 at 1:00 pm by By

Update 08:10 UTC : Water pipes broke near the seaport of Shiogama (Miyagi Prefecture), flooding a road.
Some trains were stopped after the quake to check for potential damage.

Update : JMA5+ intensity expected at Ishinomaki-shi Kobuchihama. Based on our experience with Japanese earthquakes, considers JMA 5+ intensity as a potentially dangerous shaking.

This quake was felt as far as Tokyo. JMA says it had JMA-Intensity upper five in some parts of Miyagi Prefecture, which might cause some minor damage. So far there are no damage reports.

Image courtesy JMA Japan

Image courtesy JMA Japan

52km (32mi) NE of Namie, Japan
65km (40mi) ESE of Watari, Japan
66km (41mi) ESE of Marumori, Japan
67km (42mi) ESE of Kakuda, Japan
279km (173mi) NE of Tokyo, Japan

Most important Earthquake Data:

Magnitude : 6

Local Time (conversion only below land) : Unknown

GMT/UTC Time : 2013-05-18 05:47:56

Depth (Hypocenter)  : 48 km