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Major mag. 7.9 earthquake - Near the East Coast of Honshu, Japan on Friday, 11 March 2011

Major mag. 7.9 earthquake  - Near the East Coast of Honshu, Japan on Friday, 11 March 2011
Date & time: Friday, 11 March 2011 06:15 UTC
Magnitude: 7.9
Depth: 42.6 km
Epicenter latitude / longitude: 36.281°N / 141.111°E (Japan)
Nearest volcano: Takahara (137 km / 85 mi)
Nearby towns and cities:
47 km (29 mi) E of Ōarai (pop: 19,300)
53 km (33 mi) SE of Funaishikawa (pop: 35,300)
53 km (33 mi) SE of Katsuta (pop: 156,000)
144 km (89 mi) NE of Tokyo (pop: 8,336,600)
151 km (94 mi) NE of Kawasaki (pop: 1,306,800)
162 km (101 mi) NE of Yokohama (pop: 3,574,400)
Primary data source: USGS
Estimated released energy: 4.5 x 1016 joules (12408 gigawatt hours, equivalent to 1.1 x 107 tons of TNT or 667.2 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 06:15 UTCM 7.9 / 42.6 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 7.9 quake: Near the East Coast of Honshu, Japan, 11 Mar 2011 06:15

More info
Recorded aftershocks, latest first (5414 quakes):
  • 11 Mar 2013 08:10 UTC
    | M 4.2 |
    15 km (9.3 mi) depth
    |
    55 km (34 mi) distance
    | JMA | Details
  • 08 Mar 2013 12:18 UTC
    | M 3.9 |
    58 km (36 mi) depth
    |
    353 km (219 mi) distance
    | JMA | Details
  • 06 Mar 2013 22:04 UTC
    | M 4.2 |
    27 km (16.8 mi) depth
    |
    47 km (29 mi) distance
    | JMA | Details
  • 06 Mar 2013 11:12 UTC
    | M 4.2 |
    42 km (26.1 mi) depth
    |
    297 km (185 mi) distance
    | JMA | Details
  • 04 Mar 2013 20:43 UTC
    | M 4.5 |
    102.3 km (63.6 mi) depth
    |
    254 km (158 mi) distance
    | USGS | Details
  • 03 Mar 2013 11:14 UTC
    | M 4.2 |
    42.7 km (26.5 mi) depth
    |
    61 km (38 mi) distance
    | USGS | Details
  • 02 Mar 2013 20:58 UTC
    | M 4.0 |
    51 km (31.7 mi) depth
    |
    193 km (120 mi) distance
    | JMA | Details
  • 01 Mar 2013 16:35 UTC
    | M 4.8 |
    33.2 km (20.6 mi) depth
    |
    240 km (149 mi) distance
    | USGS | Details
  • 27 Feb 2013 16:18 UTC
    | M 4.1 |
    16 km (9.9 mi) depth
    |
    42 km (26 mi) distance
    | JMA | Details
  • 26 Feb 2013 19:12 UTC
    | M 3.9 |
    56 km (34.8 mi) depth
    |
    256 km (159 mi) distance
    | JMA | Details
  • 26 Feb 2013 12:46 UTC
    | M 4.6 |
    42.1 km (26.2 mi) depth
    |
    279 km (174 mi) distance
    | USGS | Details
  • 25 Feb 2013 20:12 UTC
    | M 4.0 |
    48 km (29.8 mi) depth
    |
    383 km (238 mi) distance
    | JMA | Details
  • 25 Feb 2013 16:19 UTC
    | M 4.7 |
    60.5 km (37.6 mi) depth
    |
    240 km (149 mi) distance
    | USGS | Details
  • 25 Feb 2013 09:55 UTC
    | M 4.2 |
    4 km (2.5 mi) depth
    |
    169 km (105 mi) distance
    | JMA | Details
  • 25 Feb 2013 08:33 UTC
    | M 4.0 |
    3 km (1.9 mi) depth
    |
    166 km (103 mi) distance
    | JMA | Details
  • 25 Feb 2013 07:34 UTC
    | M 4.6 |
    9.8 km (6.1 mi) depth
    |
    176 km (109 mi) distance
    | USGS | Details
  • Show all