Moderate mag. 5.1 earthquake - North Pacific Ocean, 1075 km south of Tokyo, Japan, on Sunday, 23 January 2011 at 22:51 (GMT)

Moderate mag. 5.1 earthquake - North Pacific Ocean, 1075 km south of Tokyo, Japan, on Sunday, 23 January 2011 at 22:51 (GMT)

Moderate magnitude 5.1 earthquake at 14 km depth

Date & time: 23 Jan 2011 22:51:23 UTC
Magnitude: 5.1
Depth: 13.8 km
Epicenter latitude / longitude: 26.662°N / 143.725°E (North Pacific Ocean, Japan)
Nearest volcano: unnamed (96 km / 60 mi)
Nearby towns and cities:
1075 km (668 mi) SSE of Tokyo (pop: 8,336,600) --> See nearby quakes!
Primary data source: USGS (United States Geological Survey)
Estimated released energy: 2.8 x 1012 joules (783 megawatt hours, equivalent to 674 tons of TNT) 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.
MagnitudeDepthLocationSource
M 5.114 kmBonin Islands, Japan regionUSGS
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 of the 5.1 quake North Pacific Ocean, 1075 km south of Tokyo, Japan, 23 January 2011 22:51 GMT

More info
Recorded aftershocks, latest first (4 quakes):
  • 19 Feb 2011 14:21 UTC
    | M 4.8 |
    10 km (6.2 mi) depth
    |
    15 km (9 mi) distance
    | USGS | Details
  • 18 Feb 2011 15:35 UTC
    | M 4.3 |
    10 km (6.2 mi) depth
    |
    4 km (2 mi) distance
    | USGS | Details
  • 18 Feb 2011 08:03 UTC
    | M 4.9 |
    10 km (6.2 mi) depth
    |
    10 km (6 mi) distance
    | USGS | Details
  • 15 Feb 2011 00:54 UTC
    | M 4.6 |
    10 km (6.2 mi) depth
    |
    13 km (8 mi) distance
    | USGS | Details

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Earlier earthquakes in the same area

Moderate mag. 5.1 earthquake - North Pacific Ocean, 1075 km south of Tokyo, Japan, on Sunday, 23 January 2011 at 22:51 (GMT)
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