Major magnitude 7.1 earthquake - Oki-sannō-jima, 30 km southeast of Ishinomaki, Miyagi, Japan, on Thursday, April 7, 2011 at 14:32 (GMT)

Major magnitude 7.1 earthquake - Oki-sannō-jima, 30 km southeast of Ishinomaki, Miyagi, Japan, on Thursday, April 7, 2011 at 14:32 (GMT)

Major magnitude 7.1 earthquake at 42 km depth

1 Jan 00:00 UTC: First to report: USGS after 30 seconds.
Date & time: Apr 7, 2011 14:32:43 UTC
Magnitude: 7.1
Depth: 42.0 km
Epicenter latitude / longitude: 38.276°N / 141.588°E (Japan)
Antipode: 38.276°S / 38.412°W
Nearest volcano: Adachi (82 km / 51 mi)
Nearby towns and cities:
30 km (18 mi) ESE of Ishinomaki (pop: 117,200) --> See nearby quakes!
37 km (23 mi) ESE of Yamoto (Higashimatsushima) (pop: 32,000) --> See nearby quakes!
47 km (29 mi) ESE of Matsushima (pop: 16,400) --> See nearby quakes!
49 km (30 mi) E of Shiogama (pop: 59,500) --> See nearby quakes!
50 km (31 mi) SE of Wakuya (Tōda Gun) (pop: 18,300) --> See nearby quakes!
54 km (33 mi) E of Rifu (pop: 35,000) --> See nearby quakes!
63 km (39 mi) E of Tomiya (pop: 42,500) --> See nearby quakes!
63 km (39 mi) E of Sendai (pop: 1,063,100) --> See nearby quakes!
64 km (40 mi) ESE of Furukawa (pop: 76,300) --> See nearby quakes!
333 km (207 mi) NNE of Tokyo (pop: 8,336,600) --> See nearby quakes!
Primary data source: USGS (United States Geological Survey)
Estimated released energy: 2.8 x 1015 joules (783 gigawatt hours, equivalent to 6.7 x 105 tons of TNT or 42.1 atomic bombs!) More info
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Data for the same earthquake reported by different agencies

Info: The more agencies report about the same quake and post similar data, the more confidence you can have in the data. It takes normally up to a few hours until earthquake parameters are calculated with near-optimum precision.
Mag.DepthLocationSource
7.142 kmnear the east coast of Honshu, JapanUSGS
Note: for quakes of 2012 and earlier, our database often contains only records from USGS.

User reports for this quake

User reports estimate the perceived ground shaking intensity according to the MMI (Modified Mercalli Intensity) scale.
There are no user reports for this quake yet. If you felt it be the first to report it!
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Aftershocks

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Recorded aftershocks, latest first (9168 quakes)

  • 08 Apr 2013 14:25 UTC
    | M 2.4 |
    27 km (16.8 mi) depth
    |
    58 km (36 mi) distance
    | JMA | Details
  • 08 Apr 2013 08:12 UTC
    | M 2.2 |
    40 km (24.9 mi) depth
    |
    103 km (64 mi) distance
    | JMA | Details
  • 08 Apr 2013 08:11 UTC
    | M 3.0 |
    42 km (26.1 mi) depth
    |
    104 km (64 mi) distance
    | JMA | Details
  • 08 Apr 2013 05:18 UTC
    | M 2.7 |
    22 km (13.7 mi) depth
    |
    214 km (133 mi) distance
    | JMA | Details
  • 08 Apr 2013 05:05 UTC
    | M 2.6 |
    28 km (17.4 mi) depth
    |
    210 km (130 mi) distance
    | JMA | Details
  • 08 Apr 2013 04:03 UTC
    | M 2.2 |
    51 km (31.7 mi) depth
    |
    42 km (26 mi) distance
    | JMA | Details
  • 08 Apr 2013 03:25 UTC
    | M 3.1 |
    39 km (24.2 mi) depth
    |
    64 km (40 mi) distance
    | JMA | Details
  • 08 Apr 2013 02:20 UTC
    | M 2.4 |
    27 km (16.8 mi) depth
    |
    54 km (34 mi) distance
    | JMA | Details
  • 08 Apr 2013 00:16 UTC
    | M 4.1 |
    52 km (32.3 mi) depth
    |
    64 km (40 mi) distance
    | JMA | Details
  • 08 Apr 2013 00:06 UTC
    | M 2.8 |
    50 km (31.1 mi) depth
    |
    194 km (120 mi) distance
    | JMA | Details
  • 07 Apr 2013 22:49 UTC
    | M 2.7 |
    34 km (21.1 mi) depth
    |
    120 km (75 mi) distance
    | JMA | Details
  • 07 Apr 2013 22:33 UTC
    | M 2.1 |
    41 km (25.5 mi) depth
    |
    43 km (27 mi) distance
    | JMA | Details
  • 07 Apr 2013 21:47 UTC
    | M 2.5 |
    34 km (21.1 mi) depth
    |
    141 km (87 mi) distance
    | JMA | Details
  • 07 Apr 2013 21:45 UTC
    | M 3.1 |
    14 km (8.7 mi) depth
    |
    173 km (108 mi) distance
    | JMA | Details
  • 07 Apr 2013 20:37 UTC
    | M 3.4 |
    31 km (19.3 mi) depth
    |
    133 km (83 mi) distance
    | JMA | Details
  • 07 Apr 2013 20:21 UTC
    | M 2.0 |
    36 km (22.4 mi) depth
    |
    84 km (52 mi) distance
    | JMA | Details
  • Show all