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Major mag. 7.1 earthquake - Near the East Coast of Honshu, Japan on Thursday, 7 April 2011

Major mag. 7.1 earthquake  - Near the East Coast of Honshu, Japan on Thursday, 7 April 2011
Date & time: Thursday, 7 April 2011 14:32 UTC
Magnitude: 7.1
Depth: 42.0 km
Epicenter latitude / longitude: 38.276°N / 141.588°E (Japan)
Nearest volcano: Adachi (82 km / 51 mi)
Nearby towns and cities:
30 km (18 mi) SE of Ishinomaki (pop: 117,200)
37 km (23 mi) SE of Yamoto (pop: 32,000)
47 km (29 mi) SE of Matsushima (pop: 16,400)
63 km (39 mi) E of Sendai (pop: 1,063,100)
150 km (93 mi) NE of Iwaki (pop: 357,300)
333 km (207 mi) NE of Tokyo (pop: 8,336,600)
Primary data source: USGS
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!) [learn more]
If you felt this quake (or if you were near the epicenter), please share your experience and submit a short "I felt it" report! Other users would love to hear about it!
Also if you did NOT feel the quake although you were in the area, please report it! Your contribution is valuable also to earthquake science and earthquake hazard analysis and mitigation efforts. You can use your device location or the map to indicate where you were during the earthquake. Thank you!

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.
TimeMag. / DepthLocationSource
Thu, 7 Apr 14:32 UTCM 7.1 / 42 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!

Aftershocks of the 7.1 quake: Near the East Coast of Honshu, Japan, 7 Apr 2011 14:32

More info
Recorded aftershocks, latest first (1569 quakes):
  • 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 00:16 UTC
    | M 4.1 |
    52 km (32.3 mi) depth
    |
    64 km (40 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 17:25 UTC
    | M 3.8 |
    32 km (19.9 mi) depth
    |
    44 km (28 mi) distance
    | JMA | Details
  • 07 Apr 2013 16:32 UTC
    | M 3.1 |
    57 km (35.4 mi) depth
    |
    138 km (86 mi) distance
    | JMA | Details
  • 06 Apr 2013 14:44 UTC
    | M 3.6 |
    46 km (28.6 mi) depth
    |
    76 km (47 mi) distance
    | JMA | Details
  • 06 Apr 2013 08:26 UTC
    | M 3.1 |
    35 km (21.7 mi) depth
    |
    54 km (33 mi) distance
    | JMA | Details
  • 05 Apr 2013 18:43 UTC
    | M 3.8 |
    27 km (16.8 mi) depth
    |
    65 km (40 mi) distance
    | JMA | Details
  • 05 Apr 2013 14:42 UTC
    | M 4.6 |
    10 km (6.2 mi) depth
    |
    116 km (72 mi) distance
    | EMSC | Details
  • 05 Apr 2013 07:43 UTC
    | M 3.3 |
    45 km (28 mi) depth
    |
    69 km (43 mi) distance
    | JMA | Details
  • 05 Apr 2013 07:24 UTC
    | M 3.2 |
    26 km (16.2 mi) depth
    |
    98 km (61 mi) distance
    | JMA | Details
  • 05 Apr 2013 00:39 UTC
    | M 3.7 |
    80 km (49.7 mi) depth
    |
    71 km (44 mi) distance
    | JMA | Details
  • 04 Apr 2013 09:26 UTC
    | M 3.1 |
    47 km (29.2 mi) depth
    |
    22 km (14 mi) distance
    | JMA | Details
  • 04 Apr 2013 01:56 UTC
    | M 3.9 |
    50 km (31.1 mi) depth
    |
    139 km (87 mi) distance
    | JMA | Details
  • 03 Apr 2013 14:29 UTC
    | M 4.0 |
    30 km (18.6 mi) depth
    |
    112 km (70 mi) distance
    | JMA | Details
  • 03 Apr 2013 09:22 UTC
    | M 3.2 |
    50 km (31.1 mi) depth
    |
    48 km (30 mi) distance
    | JMA | Details
  • Show all

Earlier earthquakes in the same area

Major mag. 7.1 earthquake - Near the East Coast of Honshu, Japan on Thursday, 7 April 2011

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