Major magnitude 6.9 earthquake - North Pacific Ocean, 94 km southeast of Chichijima Island, Japan, on Wednesday, 7 December 1955 at 15:03 (GMT)

Major magnitude 6.9 earthquake - North Pacific Ocean, 94 km southeast of Chichijima Island, Japan, on Wednesday, 7 December 1955 at 15:03 (GMT)

Major magnitude 6.9 earthquake at 10 km depth

Date & time: 7 Dec 1955 15:03:15 UTC
Magnitude: 6.9
Depth: 10.0 km
Epicenter latitude / longitude: 26.497°N / 142.908°E (North Pacific Ocean, Japan)
Nearest volcano: unnamed (162 km / 101 mi)
Nearby towns and cities:
94 km (58 mi) SE of Chichijima Island (pop: 2,000) --> See nearby quakes!
Primary data source: USGS (United States Geological Survey)
Estimated released energy: 1.4 x 1015 joules (392 gigawatt hours, equivalent to 3.4 x 105 tons of TNT or 21.1 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.
MagnitudeDepthLocationSource
M 6.910 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.
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Aftershocks

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Recorded aftershocks, latest first (0 quakes):
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Earlier earthquakes in the same area

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