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Great mag. 9.1 earthquake - 2011 Great Tohoku Earthquake, Japan on Friday, 11 March 2011

Great mag. 9.1 earthquake  - 2011 Great Tohoku Earthquake, Japan on Friday, 11 March 2011
Date & time: Friday, 11 March 2011 05:46 UTC
Magnitude: 9.1
Depth: 29.0 km
Epicenter latitude / longitude: 38.297°N / 142.373°E (Japan)
Nearest volcano: Adachi (150 km / 93 mi)
Nearby towns and cities:
95 km (59 mi) E of Ishinomaki (pop: 117,200)
102 km (63 mi) E of Yamoto (pop: 32,000)
103 km (64 mi) SE of Ōfunato (pop: 35,400)
132 km (82 mi) E of Sendai (pop: 1,063,100)
191 km (119 mi) NE of Iwaki (pop: 357,300)
375 km (233 mi) NE of Tokyo (pop: 8,336,600)
Primary data source: USGS
Estimated released energy: 2.8 x 1018 joules (7.8 x 105 gigawatt hours, equivalent to 6.7 x 108 tons of TNT or 42100.6 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
Fri, 11 Mar 05:46 UTCM 9.1 / 29 km2011 Great Tohoku Earthquake, 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) scale.

Aftershocks of the 9.1 quake: 2011 Great Tohoku Earthquake, Japan, 11 Mar 2011 05h46

Show info about this
List of recorded aftershocks, latest first (1087 quakes):
  • 21 Feb 2016 21:26 UTC
    | M 5.6 |
    29 km (18 mi) depth
    |
    1522 km (946 mi) distance
    | GFZ | Details
  • 19 Feb 2016 13:13 UTC
    | M 5.2 |
    20 km (12.4 mi) depth
    |
    121 km (75 mi) distance
    | GFZ | Details
  • 14 Feb 2016 18:09 UTC
    | M 5.7 |
    419 km (260.4 mi) depth
    |
    949 km (590 mi) distance
    | GFZ | Details
  • 09 Feb 2016 14:10 UTC
    | M 5.2 |
    71 km (44.1 mi) depth
    |
    1417 km (880 mi) distance
    | GFZ | Details
  • 02 Feb 2016 05:31 UTC
    | M 5.6 |
    10 km (6.2 mi) depth
    |
    152 km (94 mi) distance
    | GFZ | Details
  • 30 Jan 2016 17:23 UTC
    | M 5.1 |
    43 km (26.7 mi) depth
    |
    782 km (486 mi) distance
    | GFZ | Details
  • 30 Jan 2016 00:16 UTC
    | M 5.4 |
    10 km (6.2 mi) depth
    |
    1476 km (917 mi) distance
    | GFZ | Details
  • 20 Jan 2016 21:53 UTC
    | M 5.4 |
    48.4 km (30.1 mi) depth
    |
    616 km (383 mi) distance
    | NIED | Details
  • 14 Jan 2016 03:27 UTC
    | M 5.1 |
    109.5 km (68 mi) depth
    |
    600 km (373 mi) distance
    | NIED | Details
  • 14 Jan 2016 03:25 UTC
    | M 6.6 |
    50 km (31.1 mi) depth
    |
    420 km (261 mi) distance
    | EMSC | Strong mag. 6.6 earthquake - HOKKAIDO, JAPAN REGION on Thursday, 14 January 2016
  • 11 Jan 2016 17:08 UTC
    | M 6.2 |
    229 km (142.3 mi) depth
    |
    692 km (430 mi) distance
    | GFZ | Strong mag. 6.2 earthquake - Hokkaido, Japan Region on Monday, 11 January 2016
  • 06 Jan 2016 01:30 UTC
    | M 5.1 |
    1 km (0.6 mi) depth
    |
    1184 km (736 mi) distance
    | GFZ | Details
  • 05 Jan 2016 02:21 UTC
    | M 5.9 |
    10 km (6.2 mi) depth
    |
    1221 km (758 mi) distance
    | EMSC | Details
  • 02 Jan 2016 04:22 UTC
    | M 5.8 |
    574 km (356.7 mi) depth
    |
    1256 km (780 mi) distance
    | GFZ | Details
  • 17 Dec 2015 21:31 UTC
    | M 5.3 |
    439 km (272.8 mi) depth
    |
    1136 km (706 mi) distance
    | GFZ | Details
  • 15 Dec 2015 00:20 UTC
    | M 5.3 |
    10 km (6.2 mi) depth
    |
    1436 km (892 mi) distance
    | GFZ | Details
  • Show all

Map of aftershocks

Significant earlier earthquakes in the same area since 1900

Great mag. 9.1 earthquake - 2011 Great Tohoku Earthquake, Japan on Friday, 11 March 2011

Map of earlier quakes

 

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