Major magnitude 9.1 earthquake - North Pacific Ocean, 69 km east of Kasakai-jima Island, Japan, on Friday, March 11, 2011 at 05:46 (GMT)

Major magnitude 9.1 earthquake - North Pacific Ocean, 69 km east of Kasakai-jima Island, Japan, on Friday, March 11, 2011 at 05:46 (GMT)

Major magnitude 9.1 earthquake at 29 km depth

1 Jan 00:00 UTC: First to report: USGS after 30 seconds.
Date & time: Mar 11, 2011 05:46:24 UTC
Magnitude: 9.1
Depth: 29.0 km
Epicenter latitude / longitude: 38.297°N / 142.373°E (North Pacific Ocean, Japan)
Antipode: 38.297°S / 37.627°W
Nearest volcano: Adachi (150 km / 93 mi)
Nearby towns and cities:
95 km (59 mi) E of Ishinomaki (pop: 117,200) --> See nearby quakes!
103 km (64 mi) SE of Ōfunato (pop: 35,400) --> See nearby quakes!
117 km (73 mi) E of Shiogama (pop: 59,500) --> See nearby quakes!
117 km (73 mi) SSE of Kamaishi (pop: 43,100) --> See nearby quakes!
127 km (79 mi) ESE of Furukawa (pop: 76,300) --> See nearby quakes!
128 km (79 mi) ESE of Ichinoseki (pop: 63,000) --> See nearby quakes!
132 km (82 mi) E of Sendai (pop: 1,063,100) --> See nearby quakes!
142 km (88 mi) SE of Mizusawa (pop: 61,300) --> See nearby quakes!
359 km (223 mi) NE of Saitama (pop: 1,193,400) --> See nearby quakes!
375 km (233 mi) NE of Tokyo (pop: 8,336,600) --> See nearby quakes!
Primary data source: USGS (United States Geological Survey)
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!) 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
9.129 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 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

More info

Recorded aftershocks, latest first (9103 quakes)

  • 14 Mar 2016 05:30 UTC
    | M 3.1 |
    27 km (16.8 mi) depth
    |
    218 km (135 mi) distance
    | NIED | Details
  • 14 Mar 2016 04:01 UTC
    | M 3.2 |
    15 km (9.3 mi) depth
    |
    195 km (121 mi) distance
    | NIED | Details
  • 14 Mar 2016 02:56 UTC
    | M 3.1 |
    15 km (9.3 mi) depth
    |
    2113 km (1313 mi) distance
    | CEIC | Details
  • 13 Mar 2016 23:10 UTC
    | M 3.6 |
    19.3 km (12 mi) depth
    |
    530 km (330 mi) distance
    | NIED | Details
  • 13 Mar 2016 23:09 UTC
    | M 4.0 |
    38 km (23.6 mi) depth
    |
    663 km (412 mi) distance
    | NIED | Details
  • 13 Mar 2016 18:42 UTC
    | M 4.7 |
    164 km (101.9 mi) depth
    |
    2131 km (1324 mi) distance
    | GFZ | Details
  • 13 Mar 2016 15:58 UTC
    | M 3.0 |
    117.8 km (73.2 mi) depth
    |
    521 km (324 mi) distance
    | NIED | Details
  • 13 Mar 2016 14:16 UTC
    | M 3.1 |
    7.8 km (4.8 mi) depth
    |
    225 km (140 mi) distance
    | NIED | Details
  • 13 Mar 2016 12:45 UTC
    | M 3.0 |
    50.5 km (31.4 mi) depth
    |
    61 km (38 mi) distance
    | NIED | Details
  • 13 Mar 2016 12:36 UTC
    | M 3.0 |
    189 km (117.4 mi) depth
    |
    443 km (276 mi) distance
    | NIED | Details
  • 13 Mar 2016 11:15 UTC
    | M 3.1 |
    35 km (21.7 mi) depth
    |
    235 km (146 mi) distance
    | NIED | Details
  • 13 Mar 2016 08:44 UTC
    | M 4.0 |
    49.4 km (30.7 mi) depth
    |
    61 km (38 mi) distance
    | NIED | Details
  • 13 Mar 2016 03:57 UTC
    | M 3.4 |
    18.9 km (11.7 mi) depth
    |
    225 km (140 mi) distance
    | NIED | Details
  • 13 Mar 2016 03:13 UTC
    | M 3.6 |
    31.8 km (19.8 mi) depth
    |
    23 km (15 mi) distance
    | NIED | Details
  • 13 Mar 2016 02:07 UTC
    | M 4.5 |
    56.8 km (35.3 mi) depth
    |
    407 km (253 mi) distance
    | NIED | Details
  • 12 Mar 2016 22:07 UTC
    | M 3.4 |
    135.3 km (84.1 mi) depth
    |
    1270 km (789 mi) distance
    | NIED | Details
  • Show all