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Major mag. 7.3 earthquake - Near the East Coast of Honshu, Japan, on Wednesday, 9 March 2011 at 02:45 (GMT)

Major mag. 7.3 earthquake  - Near the East Coast of Honshu, Japan, on Wednesday, 9 March 2011 at 02:45 (GMT)
Date & time: 2011-03-09 02:45:20 UTC
Magnitude: 7.3
Depth: 32.0 km
Epicenter latitude / longitude: 38.435°N / 142.842°E (Japan)
Nearest volcano: Narugo (186 km / 116 mi)
Nearby towns and cities:
121 km (75 mi) SE of Ōfunato (pop: 35,400)
126 km (78 mi) SE of Kamaishi (pop: 43,100)
132 km (82 mi) SE of Ōtsuchi (pop: 16,500)
134 km (83 mi) E of Ishinomaki (pop: 117,200)
173 km (108 mi) E of Sendai (pop: 1,063,100)
414 km (257 mi) NE of Tokyo (pop: 8,336,600)
Primary data source: USGS
Estimated released energy: 5.6 x 1015 joules (1562 gigawatt hours, equivalent to 1.3 x 106 tons of TNT or 84 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
2011-03-09 02:45:20 UTCM 7.3 / 32 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 7.3 quake Near the East Coast of Honshu, Japan, 2011-03-09 02:45 UTC

More info
Recorded aftershocks, latest first (4495 quakes):
  • 09 Mar 2013 18:27 UTC
    | M 3.3 |
    46 km (28.6 mi) depth
    |
    163 km (101 mi) distance
    | JMA | Details
  • 09 Mar 2013 02:26 UTC
    | M 3.4 |
    31 km (19.3 mi) depth
    |
    58 km (36 mi) distance
    | JMA | Details
  • 08 Mar 2013 20:47 UTC
    | M 3.3 |
    49 km (30.4 mi) depth
    |
    108 km (67 mi) distance
    | JMA | Details
  • 08 Mar 2013 08:18 UTC
    | M 3.3 |
    33 km (20.5 mi) depth
    |
    167 km (104 mi) distance
    | JMA | Details
  • 07 Mar 2013 15:46 UTC
    | M 3.3 |
    4 km (2.5 mi) depth
    |
    130 km (81 mi) distance
    | JMA | Details
  • 07 Mar 2013 09:17 UTC
    | M 3.7 |
    48 km (29.8 mi) depth
    |
    84 km (52 mi) distance
    | JMA | Details
  • 06 Mar 2013 11:12 UTC
    | M 4.2 |
    42 km (26.1 mi) depth
    |
    92 km (57 mi) distance
    | JMA | Details
  • 06 Mar 2013 03:05 UTC
    | M 3.8 |
    29 km (18 mi) depth
    |
    130 km (81 mi) distance
    | JMA | Details
  • 05 Mar 2013 20:15 UTC
    | M 3.3 |
    30 km (18.6 mi) depth
    |
    183 km (114 mi) distance
    | JMA | Details
  • 05 Mar 2013 04:29 UTC
    | M 3.3 |
    46 km (28.6 mi) depth
    |
    177 km (110 mi) distance
    | JMA | Details
  • 05 Mar 2013 01:41 UTC
    | M 3.3 |
    53 km (32.9 mi) depth
    |
    98 km (61 mi) distance
    | JMA | Details
  • 04 Mar 2013 06:40 UTC
    | M 3.6 |
    49 km (30.4 mi) depth
    |
    146 km (91 mi) distance
    | JMA | Details
  • 04 Mar 2013 01:19 UTC
    | M 3.3 |
    10 km (6.2 mi) depth
    |
    172 km (107 mi) distance
    | JMA | Details
  • 03 Mar 2013 04:19 UTC
    | M 3.4 |
    33 km (20.5 mi) depth
    |
    141 km (87 mi) distance
    | JMA | Details
  • 02 Mar 2013 20:58 UTC
    | M 4.0 |
    51 km (31.7 mi) depth
    |
    105 km (65 mi) distance
    | JMA | Details
  • 01 Mar 2013 19:59 UTC
    | M 3.5 |
    2 km (1.2 mi) depth
    |
    158 km (98 mi) distance
    | JMA | Details
  • Show all