Magnitude 4.7 earthquake recorded just 25 km off the Fukushima nuclear plant

magnitude-4-7-earthquake-recorded-just-25-km-off-the-fukushima-nuclear-plant

4.7 magnitude earthquake just 25 km (15 miles) off the Fukushima nuclear plant was recorded on Sunday, April 15, 2012 at 10:36 UTC (19:36 JST). Epicenter was 23 km (14 miles) ENE of Iwaki, Honshu, Japan (37.103°N, 141.142°E).

USGS recorded depth of 30.7 km (19.1 miles). Japan Meteorological Agency (JMA) is also reporting 4.7 magnitude earthquake but with depth of 10km.

This is strongest earthquake recorded close to Fukushima nuclear plant today. A swarm of earthquakes was reported for the region yesterday.

Read more: The greatest single threat to humanity – Fukushima nuclear reactor no. 4 raises new global worries

The following is a list of all earthquakes reported by JMA for April 14 and part of April 15, 2012 (Updated: 12:06 UTC on April 15).

Issued at Occurred at Region Name Magnitude Maximum seismic intensity
(JMA Seismic Intensity)
19:42 JST 15 Apr 2012 19:36 JST 15 Apr 2012 Fukushima-ken Oki M4.7 2
13:50 JST 15 Apr 2012 13:45 JST 15 Apr 2012 Tokushima-ken Hokubu M3.4 2
13:38 JST 15 Apr 2012 13:33 JST 15 Apr 2012 Miyagi-ken Oki M3.1 1
08:22 JST 15 Apr 2012 08:18 JST 15 Apr 2012 Ibaraki-ken Oki M3.6 1
05:46 JST 15 Apr 2012 05:41 JST 15 Apr 2012 Ibaraki-ken Oki M4.0 2
03:01 JST 15 Apr 2012 02:57 JST 15 Apr 2012 Tochigi-ken Hokubu M2.0 1
02:30 JST 15 Apr 2012 02:26 JST 15 Apr 2012 Fukushima-ken Oki M3.5 1
01:01 JST 15 Apr 2012 00:56 JST 15 Apr 2012 Chiba-ken Toho-oki M3.7 1
00:12 JST 15 Apr 2012 00:08 JST 15 Apr 2012 Fukushima-ken Oki M4.4 2
00:08 JST 15 Apr 2012 00:05 JST 15 Apr 2012 Fukushima-ken Oki M4.4 2
23:18 JST 14 Apr 2012 23:13 JST 14 Apr 2012 Fukushima-ken Oki M4.0 1
23:10 JST 14 Apr 2012 23:05 JST 14 Apr 2012 Miyagi-ken Oki M2.6 1
22:58 JST 14 Apr 2012 22:53 JST 14 Apr 2012 Ibaraki-ken Oki M3.8 1
22:22 JST 14 Apr 2012 22:17 JST 14 Apr 2012 Fukushima-ken Oki M4.3 1
21:44 JST 14 Apr 2012 21:40 JST 14 Apr 2012 Tokara-retto Kinkai M4.7 3
20:12 JST 14 Apr 2012 20:08 JST 14 Apr 2012 Iwate-ken Oki M4.2 2
20:04 JST 14 Apr 2012 20:00 JST 14 Apr 2012 Ibaraki-ken Oki M3.6 1
19:56 JST 14 Apr 2012 19:51 JST 14 Apr 2012 Fukushima-ken Oki M4.6 2
19:52 JST 14 Apr 2012 19:48 JST 14 Apr 2012 Fukushima-ken Oki M4.5 2
19:01 JST 14 Apr 2012 18:57 JST 14 Apr 2012 Fukushima-ken Oki M3.9 1
18:30 JST 14 Apr 2012 18:25 JST 14 Apr 2012 Ibaraki-ken Oki M5.0 3
18:10 JST 14 Apr 2012 18:06 JST 14 Apr 2012 Ibaraki-ken Oki M3.9 1
17:50 JST 14 Apr 2012 17:46 JST 14 Apr 2012 Fukushima-ken Oki M4.3 3
11:38 JST 14 Apr 2012 11:33 JST 14 Apr 2012 Ibaraki-ken Hokubu M3.3 1
11:15 JST 14 Apr 2012 11:10 JST 14 Apr 2012 Chiba-ken Toho-oki M3.9 1
10:16 JST 14 Apr 2012 10:11 JST 14 Apr 2012 Iwate-ken Oki M4.3 2
07:58 JST 14 Apr 2012 07:54 JST 14 Apr 2012 Chiba-ken Toho-oki M3.6 2
04:42 JST 14 Apr 2012 04:37 JST 14 Apr 2012 Hokkaido Hokusei-oki M2.6 1
04:03 JST 14 Apr 2012 04:00 JST 14 Apr 2012 Ibaraki-ken Oki M3.9 3
03:29 JST 14 Apr 2012 03:25 JST 14 Apr 2012 Miyagi-ken Oki M4.4 2
01:56 JST 14 Apr 2012 01:52 JST 14 Apr 2012 Fukushima-ken Oki M4.3 2
01:01 JST 14 Apr 2012 00:57 JST 14 Apr 2012 Fukushima-ken Oki M4.1 1
00:59 JST 14 Apr 2012 00:55 JST 14 Apr 2012 Sanriku Oki M4.8 1
00:30 JST 14 Apr 2012 00:26 JST 14 Apr 2012 Fukushima-ken Oki M4.4 2
00:01 JST 14 Apr 2012 23:56 JST 13 Apr 2012 Miyagi-ken Oki M3.3 1

Details of April 15, 2012, 4.7 magnitude earthquake

Magnitude 4.7
Date-Time
  • Sunday, April 15, 2012 at 10:36:53 UTC
  • Sunday, April 15, 2012 at 07:36:53 PM at epicenter
Location 37.103°N, 141.142°E
Depth 30.7 km (19.1 miles)
Region NEAR THE EAST COAST OF HONSHU, JAPAN
Distances 23 km (14 miles) ENE of Iwaki, Honshu, Japan
75 km (46 miles) ESE of Koriyama, Honshu, Japan
94 km (58 miles) SE of Fukushima, Honshu, Japan
200 km (124 miles) NE of TOKYO, Japan
Location Uncertainty horizontal +/- 19.8 km (12.3 miles); depth +/- 6.6 km (4.1 miles)
Parameters NST=172, Nph=172, Dmin=269.4 km, Rmss=0.69 sec, Gp=104°,
M-type=body wave magnitude (Mb), Version=7
Source
  • Magnitude: USGS NEIC (WDCS-D)
    Location: USGS NEIC (WDCS-D)
Event ID usc000944l

Featured image: Google Earth + USGS

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2 Comments

  1. Four earthquakes registering at 6.1, 6.0, 5.2, & 5.0 in Canada’s NW Territory were removed from ANF or Array Network Facility between the hours of 19:39 & 19:46 on Saturday April 14th. Why they were moved I do not know, but they were large enough to be recorded by the ANF.

    I do have screen shots (posted by others) of the events as they occurred.

    http://anf.ucsd.edu/

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